WorksheetsCh. 23 Respiratory Vocabulary
Total questions: 133
Worksheet time: 1hrs 7mins
Which term refers specifically to the mechanical process of moving air into and out of the lungs, regardless of gas exchange?
Respiration
Ventilation (breathing)
Internal respiration
External respiration
Internal (tissue) respiration is best described as which of the following?
Exchange of gases between the atmosphere and alveoli
Transport of oxygen in the bloodstream
Exchange of gases between systemic capillaries and body tissues
Mechanical movement of air by the diaphragm
External (pulmonary) respiration occurs at what location?
Between alveoli and pulmonary capillaries
Within mitochondria of body cells
Across the pleural membranes
Between bronchi and trachea
Which zone includes structures that conduct air to the respiratory surface but do not participate directly in gas exchange?
Respiratory zone
Diffusion zone
Conducting zone
Perfusion zone
Which structures are the primary sites of gas exchange in the lungs?
Bronchi
Alveoli
Tracheal rings
Pharynx
The respiratory zone is characterized by which function?
Filtering and humidifying incoming air
Producing voice via vocal cords
Facilitating gas exchange between air and blood
Initiating olfactory signals
Which list correctly identifies the three regions of the pharynx?
Nasopharynx, Oropharynx, Laryngopharynx
Nasal cavity, Oral cavity, Larynx
Trachea, Bronchi, Bronchioles
Epiglottis, Glottis, Vocal cords
Which structure houses the vocal cords and functions in sound production and airway protection?
Pharynx
Larynx
Trachea
Bronchi
Choose the statement that best distinguishes pulmonary ventilation from respiration.
Pulmonary ventilation refers to gas exchange across alveolar membranes
Pulmonary ventilation is the movement of air; respiration involves gas exchange
Respiration is limited to the conducting zone only
Pulmonary ventilation is synonymous with internal respiration
Which term describes the act of drawing air into the lungs by enlarging thoracic volume?
Exhalation
Hypercapnia
Inhalation
Valsalva maneuver
During exhalation, which general change in thoracic volume and alveolar pressure occurs?
Volume increases and pressure decreases
Volume decreases and pressure increases
Volume and pressure both decrease
Volume and pressure both increase
Boyle’s Law relates pressure and volume of a gas. Which statement aligns with this law in the context of breathing?
Pressure and volume are directly proportional
Pressure remains constant as volume changes
Pressure and volume are inversely proportional
Volume determines temperature, not pressure
Which muscle is the primary driver of quiet inspiration by flattening to increase thoracic cavity volume?
External intercostals
Diaphragm
Internal intercostals
Sternocleidomastoid
Which property at the air–water interface within alveoli resists expansion and is reduced by surfactant?
Compliance
Surface tension
Perfusion
Olfaction
In respiratory physiology, compliance refers to which concept?
Ability of lung tissue to stretch for a given pressure change
Rate of airflow through the trachea
Amount of oxygen bound to hemoglobin
Strength of the diaphragm contraction
The Valsalva maneuver involves which action in the respiratory system?
Forceful inhalation with open glottis
Forceful exhalation against a closed glottis
Quiet breathing at rest
Breath-holding with passive glottis
Chemoreceptors in respiratory control primarily detect changes in which variable to adjust ventilation?
Lung compliance
Alveolar surface tension
Blood gases such as CO2 and O2
Pleural fluid volume
Hypercapnia is defined as which condition?
Reduced oxygen content in arterial blood
Elevated carbon dioxide levels in blood
Excess nitrogen in alveolar air
Low hemoglobin concentration
Hypoxia specifically refers to which physiological state?
High oxygen partial pressure in tissues
Low oxygen availability to tissues
Elevated ventilation rate at rest
Reduced carbon dioxide in blood
Vital capacity is best described as which composite lung volume?
Residual volume plus dead space
Total lung capacity minus residual volume
Inspiratory reserve volume plus tidal volume only
Tidal volume minus expiratory reserve volume
Which chapter objective focuses on the structural components of the respiratory system?
Describe the anatomy of the respiratory system
Explain the physiology of the respiratory system
Describe the events that cause inhalation, exhalation, and gas exchange
Explain how oxygen and carbon dioxide are transported in the blood
According to the chapter objectives, which task emphasizes function rather than structure?
Describe the anatomy of the respiratory system
Explain the physiology of the respiratory system
List the organs of the cardiovascular system
Identify types of muscle tissue
Respiration is best defined as which process?
The mechanical inflation of the lungs
The exchange of gases between the atmosphere, blood, and cells
The movement of air through the trachea only
The transport of oxygen by hemoglobin exclusively
Which combination of processes is required for respiration to occur?
Ventilation, external respiration, internal respiration
Inhalation, exhalation, circulation
Diffusion, osmosis, filtration
Pulmonary perfusion, lymphatic drainage, neural control
Which statement correctly matches the term with its description?
Ventilation refers to gas exchange within tissues
External (pulmonary) respiration is gas exchange between blood and body cells
Internal (tissue) respiration is gas exchange between alveoli and blood
Ventilation (breathing) is the movement of air into and out of the lungs
Which chapter objective specifically addresses the mechanics of breathing and gas exchange events?
Describe the anatomy of the respiratory system
Explain the physiology of the respiratory system
Describe the events that cause inhalation, exhalation, and gas exchange
Explain how oxygen and carbon dioxide are transported in the blood
What role does the cardiovascular system play in respiration, as stated in the section?
It generates respiratory rhythms
It transports gases to assist the respiratory system
It performs ventilation by moving air
It initiates internal respiration within cells
Which process is most directly associated with the alveoli of the lungs?
Ventilation (breathing)
External (pulmonary) respiration
Internal (tissue) respiration
Cardiovascular transport
According to the structural division of the respiratory system, which set correctly lists the two main parts?
Upper respiratory system and conducting zone
Upper respiratory system and lower respiratory system
Respiratory zone and lower respiratory system
Upper respiratory system and respiratory zone
Functionally, the respiratory system is divided into which two zones?
Upper zone and lower zone
Conducting zone and respiratory zone
Airway zone and lung zone
Ventilation zone and diffusion zone
Which statement best distinguishes the structural from the functional divisions of the respiratory system?
Structural divisions describe organs; functional divisions describe processes like airflow and gas exchange zones
Structural divisions describe gas exchange; functional divisions list organs like nose and lungs
Structural divisions and functional divisions both list the same zones
Functional divisions only apply to the upper respiratory system
Based on the listed components, which organs are included in the upper respiratory system?
Nose and pharynx, along with associated structures
Larynx, trachea, bronchi, and lungs
Trachea and bronchi only
Lungs and diaphragm
Which organs are specifically part of the lower respiratory system as outlined in the material?
Nose and nasal cavity
Pharynx and associated structures
Larynx, trachea, bronchi, and lungs
Sinuses and oral cavity
A pathway that moves air from the external environment to the lungs without performing gas exchange belongs to which functional zone?
Respiratory zone
Conducting zone
Upper structural zone
Lower structural zone
If a condition selectively impairs alveolar gas exchange but leaves airflow through the trachea and bronchi intact, which division is primarily affected?
Upper respiratory system
Conducting zone
Respiratory zone
Lower structural zone
Which pairing correctly matches a named organ with the structural division it belongs to?
Pharynx — lower respiratory system
Larynx — upper respiratory system
Trachea — lower respiratory system
Nose — lower respiratory system
Refer to the labeled sagittal diagram of the upper respiratory tract. Which set correctly lists the three nasal meatuses arranged from superior to inferior?
Inferior, Middle, Superior
Superior, Middle, Inferior
Middle, Superior, Inferior
Superior, Inferior, Middle
In the anterolateral view of the nose, which structure is part of the bony framework rather than the cartilaginous framework?
Major alar cartilages
Septal nasal cartilage
Maxilla
Lateral nasal cartilages
Which statement best describes the external portion of the nose based on the diagram and caption?
It is composed entirely of bone and lined with serous membrane.
It is made of cartilage and skin and is lined with mucous membrane.
It consists of hyaline cartilage only and is unlined.
It is primarily muscle tissue with a fibrous lining.
In the sagittal diagram, which region directly contains the olfactory epithelium?
Nasopharynx
Nasal vestibule
Superior nasal cavity near the superior concha
Laryngopharynx
Which pair correctly matches framework type to an example labeled in the nose diagram?
Cartilaginous framework — Frontal bone
Bony framework — Nasal bones
Cartilaginous framework — Maxilla
Bony framework — Major alar cartilages
According to the sagittal overview diagram, which structure is immediately anterior to the nasal cavity and opens to the exterior?
Internal naris
External naris
Auditory tube opening
Esophagus
A patient has trauma affecting the major alar cartilages. Based on the nose framework diagram, which adjacent cartilaginous structure might also be impacted due to proximity?
Lateral nasal cartilages
Frontal bone
Maxilla
Hyoid bone
According to the labeled sagittal skull diagram of the nasal cavity, which set correctly lists the three nasal conchae from superior to inferior?
Middle, superior, inferior
Superior, middle, inferior
Inferior, middle, superior
Superior, inferior, middle
The bony framework of the nose is primarily formed by which bones, as indicated in the internal anatomy overview?
Frontal, nasal, and maxillary bones
Temporal, zygomatic, and mandible
Ethmoid, sphenoid, and palatine
Parietal, occipital, and vomer
In the sagittal view diagram, the superior nasal meatus is located in relation to the superior nasal concha. Which description is accurate?
Inferior to the superior nasal concha
Posterior to the superior nasal concha
Superior to the superior nasal concha
Anterior to the superior nasal concha
On the surface anatomy list, which term refers to the tip of the nose?
Root
Bridge
Apex
External naris
Which surface landmark is defined as the superior attachment of the nose to the frontal bone?
External naris
Bridge
Root
Apex
In the internal anatomy sagittal diagram, which structure directly opens into the nasal cavity from the exterior?
Internal naris
External naris
Olfactory epithelium
Frontal sinus
A clinician is assessing airflow patterns. Based on the sagittal diagram of the nasal cavity, which pathway sequence best traces inhaled air from the nostril toward the nasopharynx?
External naris → inferior, middle, and superior meatuses → hard palate → nasopharynx
External naris → nasal vestibule → meatuses adjacent to the conchae → internal naris → nasopharynx
Internal naris → nasal vestibule → conchae → external naris → nasopharynx
Frontal sinus → superior meatus → external naris → oropharynx
Which statement best describes a primary function of the pharynx as presented in the material?
It exclusively transports air to the lungs
It serves as a passageway for both air and food
It houses the thyroid gland to regulate metabolism
It produces sound through vocal fold vibration
Identify the correct grouping of the pharyngeal regions named in the material.
Nasopharynx, Oropharynx, Laryngopharynx
Oropharynx, Tracheopharynx, Bronchopharynx
Nasopharynx, Hypopharynx, Tracheopharynx
Laryngopharynx, Esophagopharynx, Nasopharynx
According to the description, which role of the pharynx contributes directly to speech?
It initiates vocal fold vibration
It acts as a resonating chamber for speech sounds
It opens and closes the glottis
It houses the cricoid cartilage
Which immune-related structure is housed within the pharynx, based on the material?
Parathyroid glands
Tonsils
Alveoli
Epiglottis
Which statement correctly characterizes the larynx from the material?
The larynx is a muscular sac that connects the trachea to the bronchi
The larynx (voice box) is a passageway connecting the pharynx and trachea
The larynx is solely a digestive organ situated behind the esophagus
The larynx houses tonsils that filter air
What produces sound in the larynx according to the material?
Air passing through the nasopharynx
The epiglottis closing over the glottis
Vocal folds vibrating
Contraction of the cricoid cartilage
Which set lists laryngeal cartilages specifically labeled in the diagrams provided?
Cricoid cartilage, Thyroid cartilage, Arytenoid cartilage
Epiglottic cartilage, Costal cartilage, Hyoid cartilage
Tracheal cartilage, Bronchial cartilage, Alveolar cartilage
Thyroid cartilage, Costal cartilage, Intervertebral cartilage
Which structural relationship is accurate based on the material’s larynx description and diagrams?
The larynx lies inferior to the trachea and opens into the esophagus
The larynx connects superiorly with the pharynx and inferiorly with the trachea
The larynx is positioned posterior to the thyroid cartilage and leads to the bronchi
The larynx connects the nasopharynx directly to the bronchi without the trachea
Recall: According to the section, the trachea extends from which upper airway structure to the primary bronchi near the T5 vertebra?
Pharynx
Larynx
Nasal cavity
Oral cavity
Recall: At approximately which vertebral level does the trachea branch into the primary bronchi?
C7 vertebra
T1 vertebra
T5 vertebra
L1 vertebra
Skill/Concept: Which statement best describes the branching order within the bronchial tree of the conducting zone?
Trachea → Lobar bronchi → Main bronchi → Terminal bronchioles
Trachea → Main bronchi → Lobar bronchi → Segmental bronchi → Bronchioles → Terminal bronchioles
Trachea → Segmental bronchi → Main bronchi → Bronchioles → Lobar bronchi
Trachea → Bronchioles → Segmental bronchi → Lobar bronchi → Main bronchi
Recall: What are the names of the first branches of the trachea that enter each lung?
Secondary bronchi
Primary bronchi
Segmental bronchi
Terminal bronchioles
Skill/Concept: Identify the correct pairing of bronchus to lung at the tracheal bifurcation.
Right primary bronchus enters the left lung; left primary bronchus enters the right lung
Both primary bronchi enter the right lung
Right primary bronchus enters the right lung; left primary bronchus enters the left lung
Neither primary bronchus enters the lungs directly
Recall: Which structures mark the end of the conducting zone within the bronchial tree?
Respiratory bronchioles
Alveolar ducts
Segmental bronchi
Terminal bronchioles
Skill/Concept: Based on the epithelial surface micrograph of the trachea, which two cell types are characteristic of its lining? (Refer to the labeled micrograph.)
Type II pneumocytes and macrophages
Ciliated epithelial cells and goblet cells
Squamous cells and fibroblasts
Basal cells and smooth muscle cells
Strategic Thinking: Why are ciliated epithelial cells and goblet cells functionally suited to the trachea’s role in the conducting zone?
They produce surfactant for gas exchange
They secrete mucus and move it, helping trap and clear particulates
They form cartilage rings that keep the airway open
They increase blood flow for heat exchange
Strategic Thinking: If a blockage occurs at the level of the lobar bronchi, which downstream conducting structures would be directly deprived of airflow first?
Main bronchi
Segmental bronchi and their bronchioles
Trachea
Alveolar sacs
Skill/Concept: As the primary bronchi enter the lungs, what change occurs to their branches?
They merge into a single larger bronchus
They progressively divide into smaller-diameter branches
They transform into cartilage-free alveolar ducts immediately
They become part of the digestive tract
Recall: Which statement best describes the location and protection of the lungs as shown in the anterior thoracic diagram?
The lungs are paired organs in the thoracic cavity enclosed by the pleural membrane.
The lungs are single midline organs in the abdominal cavity covered by the peritoneum.
The lungs are paired organs in the cranial cavity protected by the meninges.
The lungs are single organs in the pelvic cavity lined by the endothelium.
Recall: In the branching sequence of the bronchial tree displayed, which structure directly follows the trachea?
Main bronchi
Lobar bronchi
Segmental bronchi
Terminal bronchioles
Skill/Concept: Based on the labeled right lung diagram, which option correctly pairs a pleural layer with its position relative to the lung surface?
Visceral pleura: directly adherent to lung; Parietal pleura: lines thoracic wall
Visceral pleura: lines thoracic wall; Parietal pleura: covers lung surface
Both visceral and parietal pleura line the thoracic wall
Pleura is a single layer only covering the diaphragm
Recall: Which bronchial level is immediately distal to the lobar bronchi in the branching diagram?
Segmental bronchi
Main bronchi
Bronchioles
Terminal bronchioles
Strategic Thinking: A patient has mucus obstructing the right segmental bronchi. According to the diagram, which proximal airway would most directly be affected upstream by this obstruction?
Right lobar bronchus
Right terminal bronchiole
Trachea
Left main bronchus
Recall: In the anterior view of lungs and pleura, which term correctly names the superior pointed region of each lung?
Apex of lung
Base of lung
Hilum of lung
Cardiac notch
Skill/Concept: Using the anterior view, which structure forms the inferior surface of the lungs and rests on the diaphragm?
Base of lung
Apex of lung
Hilum
Oblique fissure
Recall: According to the lateral view diagrams, which lung possesses a horizontal fissure that creates a middle lobe?
Right lung
Left lung
Both lungs
Neither lung
Skill/Concept: In the medial view of the left lung, which indentation is associated with the heart?
Cardiac notch
Hilum
Oblique fissure
Horizontal fissure
Strategic Thinking: If the left lung lacks a horizontal fissure, how are its lobes separated according to the diagrams?
By a single oblique fissure forming superior and inferior lobes
By horizontal and oblique fissures forming superior, middle, and inferior lobes
By two horizontal fissures forming superior and middle lobes
By three oblique fissures forming upper, middle, and lower lobes
Recall the four layers that compose the respiratory membrane. Which option correctly identifies the cellular layer at the alveolar wall?
Type I and Type II alveolar cells with associated alveolar macrophages
Ciliated pseudostratified epithelium of the trachea
Keratinized stratified squamous epithelium of the skin
Goblet cell–rich mucosa of the bronchi
Which structure lies directly beneath the alveolar wall and provides structural support to the epithelium of the respiratory membrane?
Capillary endothelium
Epithelial basement membrane
Capillary lumen
Elastic cartilage
Apply the concept of membrane fusion: In many alveoli, which two basement membranes are often fused to minimize diffusion distance for gas exchange?
Epithelial basement membrane and capillary basement membrane
Capillary endothelium and alveolar macrophage layer
Type I alveolar cell membrane and goblet cell membrane
Bronchiolar smooth muscle membrane and epithelial basement membrane
Reason strategically: A patient has thickening of the capillary endothelium in the alveoli. Which part of the respiratory membrane is directly affected, and what is a likely consequence for gas exchange?
The epithelial basement membrane; increased diffusion efficiency
The capillary endothelium; decreased diffusion efficiency due to greater barrier thickness
The layer of Type II cells; increased surfactant production enhances diffusion
The alveolar macrophage layer; improved pathogen clearance increases diffusion rate
According to the airway branching chart, which structure is classified as Generation 0 in the conducting zone?
Main bronchi
Trachea
Lobar bronchi
Terminal bronchioles
In the conducting zone, lobar and segmental bronchi correspond to which generation range?
1–5
2–10
11–16
17–19
Which airway marks the transition from the conducting zone to the respiratory zone based on generation numbers?
Main bronchi at Generation 1
Terminal bronchioles at Generation 16
Respiratory bronchioles at Generations 17–19
Alveolar ducts at Generations 20–22
Which structure belongs to the respiratory zone and is listed with Generations 20–22?
Lobar bronchi
Alveolar ducts
Terminal bronchioles
Main bronchi
Identify the correct pairing of airway and generation number within the conducting zone.
Trachea — Generation 1
Main bronchi — Generation 0
Bronchioles and terminal bronchioles — Generations 11–16
Lobar bronchi — Generations 17–19
Which sequence correctly orders airway structures from proximal to distal across both zones?
Trachea → Alveolar ducts → Main bronchi → Lobar bronchi → Alveolar sacs
Main bronchi → Trachea → Terminal bronchioles → Respiratory bronchioles → Alveolar sacs
Trachea → Main bronchi → Lobar/segmental bronchi → Bronchioles/terminal bronchioles → Respiratory bronchioles → Alveolar ducts → Alveolar sacs
Trachea → Lobar bronchi → Main bronchi → Respiratory bronchioles → Terminal bronchioles
A particle travels to Generation 23. Which structure does it reach?
Respiratory bronchioles
Alveolar sacs
Terminal bronchioles
Main bronchi
Which statement best describes when the respiratory zone begins in the airway tree?
It begins at the trachea when air first enters the lungs
It begins when the conducting zone ends at the terminal bronchioles
It begins at the nasal cavity before air passes the pharynx
It begins only after air reaches the alveolar sacs
The respiratory zone terminates at structures commonly called "air sacs." What are these structures?
Respiratory bronchioles
Alveolar ducts
Alveoli
Terminal bronchioles
Based on the microscopic airways sequence shown in the diagram, which structure directly precedes the alveoli?
Respiratory bronchioles
Alveolar ducts
Alveolar sacs
Terminal bronchioles
Which description best characterizes the shape of alveoli within a lung lobule?
Tube-like structures resembling branching pipes
Sac-like structures that resemble bundles of grapes
Flat plate-like structures arranged in layers
Solid nodules embedded within connective tissue
There are two main kinds of alveolar cells. Which pairing correctly matches each type with its primary role?
Type I: caretaker/homeostasis; Type II: gas exchange
Type I: mucus production; Type II: ciliary movement
Type I: gas exchange; Type II: caretaker/homeostasis
Type I: immune surveillance; Type II: surfactant absorption
Using the labeled lung lobule micrograph, which structure would you expect to be contiguous with alveoli and lead toward them?
Terminal bronchiole
Alveolar ducts
Visceral pleura
Pulmonary venule
Which sequence correctly orders the airflow pathway within the microscopic airways of the respiratory zone?
Alveoli → alveolar sacs → alveolar ducts → respiratory bronchioles
Respiratory bronchioles → alveolar sacs → alveolar ducts → alveoli
Respiratory bronchioles → alveolar ducts → alveolar sacs → alveoli
Terminal bronchioles → alveoli → alveolar sacs → alveolar ducts
A patient has damage to cells responsible for maintaining alveolar homeostasis. Which alveolar cell type is most likely impaired?
Type I cells
Type II cells
Ciliated columnar cells
Goblet cells
Refer to the diagram of the alveolus with labeled cellular components. Which cell type primarily forms the thin surface through which gases diffuse between the alveolar air and blood?
Type I alveolar cell
Type II alveolar (septal) cell
Alveolar macrophage (dust cell)
Monocyte
According to the detailed respiratory membrane inset, which sequence correctly lists structures an oxygen molecule crosses moving from the alveolar air to a red blood cell?
Alveolar fluid with surfactant → Type I alveolar cell → epithelial basement membrane → interstitial space → capillary basement membrane → capillary endothelium
Type II alveolar cell → epithelial basement membrane → interstitial space → capillary endothelium → capillary basement membrane
Alveolar fluid with surfactant → epithelial basement membrane → Type I alveolar cell → capillary endothelium only
Alveolar fluid with surfactant → interstitial space → capillary endothelium → Type I alveolar cell → epithelial basement membrane
Which component is responsible for producing surfactant found in the alveolar fluid as shown in the diagram?
Type II alveolar (septal) cell
Type I alveolar cell
Capillary endothelium
Alveolar macrophage
In the figure, which statement best describes the role of the alveolar macrophage (dust cell)?
It phagocytoses debris within the alveolus to maintain clean surfaces for gas exchange
It forms the epithelial basement membrane of the respiratory membrane
It synthesizes elastic fibers in the alveolar wall
It transports oxygen across the capillary endothelium
Which pair of structures in the respiratory membrane are both basement membranes located between the epithelium and capillary?
Epithelial basement membrane and capillary basement membrane
Capillary endothelium and epithelial basement membrane
Type I alveolar cell and capillary endothelium
Interstitium and alveolar fluid with surfactant
Based on the arrows in the inset, what is the bidirectional gas movement across the respiratory membrane during normal respiration?
Oxygen diffuses from alveolus to blood; carbon dioxide diffuses from blood to alveolus
Oxygen and carbon dioxide both diffuse from blood to alveolus
Oxygen diffuses from blood to alveolus; carbon dioxide diffuses from alveolus to blood
Both gases do not diffuse across the respiratory membrane under normal conditions
Recall: Which vessels carry blood into the lungs as part of pulmonary circulation?
Pulmonary arteries
Pulmonary veins
Bronchial veins
Coronary arteries
Recall: Through which vessels does blood leave the lungs to return to the heart from the pulmonary circuit?
Pulmonary arteries
Pulmonary veins
Bronchial arteries
Aorta
Skill/Concept: The lungs receive blood from two sources. Which pairing correctly matches each source with its larger circulatory system?
Pulmonary arteries — systemic circulation; Bronchial arteries — pulmonary circulation
Pulmonary arteries — pulmonary circulation; Bronchial arteries — systemic circulation
Pulmonary veins — systemic circulation; Bronchial veins — pulmonary circulation
Bronchial arteries — coronary circulation; Pulmonary veins — systemic circulation
Strategic Thinking: A blockage in a bronchial artery would most directly reduce which type of blood flow to lung tissues? Choose the best answer.
Pulmonary circulation delivering deoxygenated blood to alveoli
Systemic circulation providing oxygenated blood to lung tissues
Venous return from the lungs to the left atrium
Coronary circulation supplying the heart muscle
Skill/Concept using diagram: Refer to the pulmonary circuit diagram showing right and left pulmonary arteries and veins connecting the heart and lungs. Which statement best describes the direction of blood flow in the labeled pulmonary veins?
From the right ventricle to the lungs
From the lungs back to the left atrium
From the left ventricle to the lungs
From the lungs to the right atrium
Recall: Which pharyngeal region is a passageway exclusively for air and contains internal nares, openings for auditory tubes, and a pharyngeal tonsil?
Oropharynx
Nasopharynx
Laryngopharynx
Larynx
Recall: Which pharyngeal region serves as a passageway for both air and food/drink and contains the opening from the mouth?
Nasopharynx
Oropharynx
Laryngopharynx
Trachea
Recall: Which pharyngeal region is a passageway for both air and food/drink but does not contain an opening from the mouth?
Nasopharynx
Oropharynx
Laryngopharynx
Larynx
Skill/Concept: Based on epithelial features, which pharyngeal region would be most susceptible to food abrasion due to lacking cilia and goblet cells?
Nasopharynx
Oropharynx
Laryngopharynx
Trachea
Recall: Which structures have cilia and goblet cells present according to the summary?
Nasopharynx and trachea
Oropharynx and laryngopharynx
Larynx above vocal folds and alveoli
Alveoli and bronchioles
Recall: In the larynx, where are cilia and goblet cells present?
Present above the vocal folds only
Absent below the vocal folds only
Absent above the vocal folds; present below the vocal folds
Present both above and below the vocal folds
Recall: What special feature of the larynx is highlighted in the summary?
Contains C-shaped rings of cartilage
Contains vocal folds for voice production
Site of gas exchange
Contains pharyngeal tonsil
Recall: What structural feature keeps the trachea open?
Elastic bands of smooth muscle
O-shaped rings of bone
C-shaped rings of cartilage
Goblet cell mucous plugs
Skill/Concept: Which combination correctly pairs structure with its primary function as given: passageway for air with gas exchange and surfactant production?
Trachea
Larynx
Alveoli
Oropharynx
Recall: What is the epithelial type lining the alveoli?
Stratified squamous
Simple squamous
Pseudostratified ciliated columnar
Transitional epithelium
Recall: Do alveoli have cilia and goblet cells according to the table?
Cilia present; goblet cells present
Cilia present; goblet cells absent
Cilia absent; goblet cells present
Cilia absent; goblet cells absent
Strategic Thinking: A patient aspirates small particles. Which region’s cilia and goblet cells would most aid initial clearance before reaching the lungs? Use the table information.
Oropharynx
Nasopharynx
Laryngopharynx
Alveoli
Skill/Concept: If mucus production below the vocal folds is impaired, which structure’s function would be most directly affected according to the summary?
Nasopharynx
Larynx
Trachea
Alveoli
Strategic Thinking: To minimize airway resistance while maintaining openness, which structural feature would be most critical in the conducting zone between the larynx and bronchi?
Pharyngeal tonsil in nasopharynx
C-shaped cartilage rings in trachea
Simple squamous lining in alveoli
Opening from the mouth in oropharynx
Strategic Thinking: A loss of surfactant leads to alveolar collapse. Which specific feature from the summary explains why surfactant loss compromises patency?
Alveoli produce surfactant to maintain openness
Trachea has C-shaped rings to maintain openness
Nasopharynx contains openings for auditory tubes
Larynx contains vocal folds for voice production
Pulmonary ventilation refers to air movement between which two locations due to alternating pressure differences created by respiratory muscle activity?
The atmosphere and the alveoli of the lungs
The trachea and the bronchi
The pleural cavity and the bloodstream
The larynx and the pharynx
According to the diagram of breathing in and breathing out, which statement best describes the diaphragm during inhalation?
It contracts and moves downward, increasing thoracic volume
It relaxes and moves upward, decreasing thoracic volume
It contracts and moves upward, compressing the lungs
It remains stationary to stabilize the rib cage
Which process is directly associated with chest expansion as shown in the inhalation diagram?
Inhalation
Exhalation
Valsalva maneuver
Residual volume generation
During exhalation depicted in the diagram, which change occurs in the thoracic cavity?
Chest contracts as the diaphragm relaxes
Chest expands as the diaphragm contracts
Ribs elevate to increase lung volume
Diaphragm flattens to pull air in
Which muscle group is primarily responsible for elevating the ribs during inhalation as indicated by arrows in the muscles-of-inhalation illustration?
External intercostals
Internal intercostals
Rectus abdominis
Transversus abdominis
In the muscles-of-exhalation illustration, which muscle group is shown between ribs and contributes to forced exhalation?
Internal intercostals
External intercostals
Scalenes
Diaphragm
Which set of muscles increases abdominal pressure to aid in forced exhalation according to the exhalation panel?
Rectus abdominis, transversus abdominis, internal and external obliques
Scalenes, sternocleidomastoid, diaphragm
External intercostals and scalenes
Diaphragm and internal intercostals only
Which accessory muscles of inhalation are shown attaching to the upper ribs and assisting in elevating the thorax?
Sternocleidomastoid and scalenes
Internal intercostals and rectus abdominis
External oblique and transversus abdominis
Diaphragm and internal oblique
A student notes that the external intercostals are active during inhalation. Based on the figure, what is their primary mechanical effect on the rib cage?
Elevate ribs and expand the chest
Depress ribs and compress the chest
Flatten the diaphragm to increase abdominal pressure
Stabilize the clavicle without moving ribs
Which pairing correctly matches the breathing phase with the state of the diaphragm shown in the ventilation diagram?
Inhalation—diaphragm contracts; Exhalation—diaphragm relaxes
Inhalation—diaphragm relaxes; Exhalation—diaphragm contracts
Both phases—diaphragm relaxes
Both phases—diaphragm contracts
