WorksheetsBreathe
Total questions: 25
Worksheet time: 4mins
Which has highest affinity for Hb?
CO
CO2
O2
NO
Incorrect in diver’s paralysis
Known as Dysbarism
85% people suffer joint pains
40% people experience chokes
pN2 in arterioles increases on descending
All of the following decrease with age except
TLC
PaO2
FRC
FEV1
Which of the following is in the correct path of CO2 from the tissue to the atmosphere?
Reaction with H2O to make H2CO3, dissociation to H+ and HCO3-, H+ combines with imidazole side chain of hemoglobin, carried back to lungs as HHb+ and HCO3-, reverse reaction forms CO2.
O2 is metabolized to CO2, reaction with H2O to make H2CO3, H2CO3 combines with imidazole side chain of hemoglobin, H2CO3Hb+ is carried back to the lungs, reverse reaction forms CO2.
Reaction with H2O to make H2CO3, dissociation to H+ and HCO3-, HCO3- combines with imidazole side chain of hemoglobin, carried back to the lungs as HCO3-Hb+ and H+, reverse reaction forms CO2.
O2 is metabolized to CO2, reaction with H2O to make H2CO3, dissociation to H+ and HCO3-, carried back to lungs in this form, reverse reaction forms CO2.
Which of the following is NOT an effector of respiration?
Heart
Inercostals
Diaphragm
Trapezius
Which of the following could NOT be part of an acinus?
Alveolar Sacs
Alveolar Ducts
Terminal Bronchioles
Respiratory Bronchioles
Alveoli are normally kept dry by
Macrophages
Epithelium
Surfactant
CO2
Which of the following concerning average lung volumes and capacities of a person at rest is TRUE?
TLC>VC>TV>FRC
TLC>FRC>VC>TV
TLC>VC>FRC>TV
TLC>FRC>TV>VC
Which of the following is NOT a normal occurance with increasing age?
Vital capacity of the lung decreases.
Residual volume increases.
Inspiratory capacity decreases.
Expiratory reserve volume increases.
Which of the following spirometry measurements has the greatest sensitivity for detecting early air flow obstruction?
FVC
FEV1
FFE
FEF 25-75
Which of the following does NOT happen during inspiration?
The ribs move upward.
The diaphragm lifts up.
The antero-posterior dimensions of the chest are increased.
The tranverse dimensions of the thorax are increased
During inspiration, how does alveolar pressure compare to atmospheric pressure?
Alveolar pressure is greater than atmospheric.
Alveolar pressure is less than atmospheric.
Alveolar pressure is the same as atmospheric.
Alveolar pressure is one of the few pressures where the reference pressure is not atmospheric.
Which of the following represents the pressure difference that acts to distend the lungs?
Alveolar pressure
Airway opening pressure
Transthoracic pressure
Transpulmonary pressure
If a patient had a progressive lung disease that required an ever increasing pressure to fill the same volume of lung, how would the lung's compliance be affected?
It would increase it
It would stay the same.
It would decrease it.
These variables do not affect lung compliance.
An asthma sufferer finds she has to breathe at twice her normal rate. How does that affect her dynamic compliance?
It stays the same
It decreases
It increases.
Static compliance, not dynamic, is the variable affected by asthma.
According to the Law of Laplace, air should flow from the smaller alveoli to the larger, collapsing them. In the lungs, several factors counter that tendency, and stabilize the alveolar structures. Which of the following is NOT one of them?
Surfactant lowers surface tension to a greater degree when it is on a smaller surface area, allowing the smaller alveoli to stay open.
Mechanical stability is given by surrounding alveoli.
Transpulmonary pressure is lower for smaller alveoli, allowing them to stabilize in comparison to the bigger ones.
Surface tension at the gas-liquid interface increases as alveolar surface area increases.
Which of the following is FALSE concerning the production and role of lung surfactant?
It is part of a lipoprotein called dipalmitoyl phosphatidyl-choline.
It is synthesized by alveolar type II cells.
As the alveolar surface area decreases during the compression curve, the surfactant decreases the surface tension at a constant rate.
When surfactant density is decreased during expansion, surface tension initially rises rapidly, then slows down until it reaches the starting point.
Which of the following is NOT true concerning respiratory distress syndrome in premature infants?
Higher pressures are required to ventilate the lungs.
Lung compliance is low
Positive pressure respirators are often used to assist them in breathing.
Alveoli tend to overexpand and sometimes burst at the end of inspiration.
Which of the following is NOT true at FRC?
It is about 75% TLC
The elastic recoil of the chest wall is outward.
The elastic recoil of the lung is inward.
The relaxation pressure of the lung and chest wall combined is at atmospheric pressure.
If the lung were punctured, which of the following would happen?
The lung would collapse on the side of the puncture..
Both the lung and the chest wall would collapse on the side of the puncture.
The relaxation pressure of the chest wall would increase until it surpassed the atmospheric.
The relaxation pressure of the chest wall would increase, but stop before it reached atmospheric pressure.
Which of the following statement is true?
The coastal surface lies directly across the mediastinum
The division between the lobes are known as lobules
The right lung contains the concavity k/as cardiac notch
Hilum is the region through which bronchi blood vessels lymphatic vessels enter and exit.
Why is the right lung divided in 3 lobes while the left lung has 2 lobes?
It contains more space than left
Because right side is always better
Right side contains cardiac
All of the above
The oblique fissure of right lung separates which of the two lobes?
Middle lobe from inferior lobe
Inferior lobe to superior
Superior to inferior
Inferior lobe to the part of superior lobe
The pleural membrane is-
Serous membrane
Mucous membrane
Cuboidal epithelium
Simple epithelium
The trachea
Lies deep to the oesophagus.
Lies superficial to the oesophagus
Is totally enclosed by cartilaginous rings
Divides at the thoracic inlet
