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WorksheetsFSS 203 Human Anatomy II Quarter Final Review
Total questions: 149
Worksheet time: 1hrs 15mins
Which term describes an air-filled cavity within a bone?
Fossa within compact bone
Antrum or sinus space
Foramen through cortical bone
Condyle articular surface
A tunnel-like passage or opening in a bone is called what?
Foramen hole
Septum wall
Canal or meatus
Fissure groove
Which landmark is a smooth, curved articular surface on a bone?
Tubercle raised bump
Crest prominent ridge
Condyle articular surface
Head rounded projection
Which term refers to a prominence located just above a condyle?
Epicondyle above condyle
Crest ridge feature
Process bony outgrowth
Fontanel infant gap
A prominent ridge on a bone is best termed what?
Head ball-like end
Fossa shallow depression
Septum dividing wall
Crest bony ridge
A narrow slit or groove in a bone is called a what?
Fissure narrow groove
Foramen circular hole
Fontanel membranous gap
Meatus tunnel opening
Which definition matches fontanel?
Unossified infant cranial area
Ball-like articular projection
Partition dividing a cavity
Air-filled sinus in bone
A hole in a bone is known as which landmark?
Tuberosity raised bump
Fossa bone depression
Canal tunnel passage
Foramen bony hole
Which term specifies a depression in a bone?
Crest elongated ridge
Condyle smooth surface
Fossa bone depression
Meatus tunnel opening
A ball-like articular projection on a bone is called the what?
Head rounded projection
Condyle curved surface
Tubercle small elevation
Process prominent outgrowth
Which term denotes any prominent projection or outgrowth of bone?
Septum dividing wall
Head articular end
Crest raised ridge
Process bony projection
A wall or partition that divides a body cavity is termed what?
Foramen osseous hole
Septum dividing partition
Fissure narrow slit
Fontanel infant membrane
Which option correctly defines tubercle or tuberosity?
Air-filled sinus cavity
Smooth articular condyle
Tunnel-like passageway
Bump or elevation on bone
Select all terms that are openings rather than projections.
Foramen bony hole
Head rounded end
Fontanel cranial gap
Canal or meatus tunnel
Fossa shallow depression
Which bone forms the forehead and the upper part of the eye sockets?
Temporal bone forms lower cranial sides
Occipital bone forms cranial back
Parietal bone forms upper cranial sides
Frontal bone forms forehead and orbits
The supraciliary arches are best described as which feature?
Upper rims of the eye sockets
Elevations above medial eyebrow ends
Rounded eminences at upper forehead
Prominence between the eyebrows
Which pairing correctly matches a frontal bone landmark with its description?
Frontal eminences—depressions near nasal bones
Supraorbital margins—lower rims of the eye sockets
Glabella—prominence between the eyebrows
Frontal sinuses—air cavities within frontal bone
Parietal bones primarily contribute to which region of the cranium?
Posterior base and foramen magnum
Floor of the cranial cavity
Majority of upper sides and top
Lower sides surrounding the ears
Which temporal bone structure articulates with the condyles of the mandible?
Mastoid process anchors tongue muscles
Mandibular fossa receives mandibular condyles
Squamous portion encloses the middle ear
Zygomatic process joins the cheekbone
The external auditory meatus is best characterized as what?
Air cavity within ethmoid bone
Tunnel from external ear to middle ear
Thin plate forming nasal septum
Large opening for spinal cord passage
Which feature projects behind the ear on the temporal bone?
Zygomatic process forward projection
Mastoid process posterior projection
Mandibular fossa medial depression
Squamous portion superior flat part
Which structure is the large opening connecting the spinal cord to the brain?
Cribriform plate perforated surface
External occipital protuberance tubercle
Foramen magnum large opening
Occipital condyles articulation points
Occipital condyles articulate with which adjacent structures?
Temporal bone mandibular fossa
Ethmoid perpendicular plate
Zygomatic bone of the face
Top vertebrae at the atlas
Which statement about the external occipital protuberance is accurate?
Vertical projection called rooster’s comb
Depression articulating with the mandible
Flat superior surface with small holes
Prominent tubercle on posterior surface
What term refers to the top, dome-like skullcap?
Ramus vertical posterior mandible
Angle turn of mandibular body
Calvaria dome-like skullcap
Orbit eye socket of seven bones
Which bones contribute portions to the orbit along with the ethmoid?
Frontal, lacrimal, zygomatic
Maxillary, palatine, sphenoid
Parietal, occipital, temporal
Mandible, hyoid, nasal
Which description accurately identifies the mandibular body?
Tip of the chin prominence
Point where body turns upward
Vertical posterior ramus portion
Main horizontal anterior portion
The mental eminence is commonly known as which feature?
Upper rims of eye sockets
Articulation with temporal bone
Area where teeth are embedded
Tip of the chin prominence
Where are teeth embedded along the mandible?
Ramus posterior vertical segment
Alveolar process tooth sockets
Angle turning point of body
Mandibular condyle articulation area
Which statement about the mandibular condyle is correct?
Forms the tip of the chin prominence
Articulates with mandibular fossa of temporal
Thin plate forming the nasal septum
Large opening linking spinal cord and brain
Which property makes the hyoid bone unique among skull-associated bones?
Does not directly articulate with other bones
Forms the lower back of the cranium
Contains perforations for olfactory nerves
Articulates with the mandibular fossa
Which structure is immediately inferior to the L5 vertebra and articulates with the iliac bones to form the pelvis?
Sacrum formed by five vertebrae
Coccyx formed by small vertebrae
Manubrium of the sternum
Acetabulum of the os coxae
Which description best identifies the coccyx?
Superior segment with jugular notch
Most inferior vertebrae fused as tail bone
Middle segment of the sternum body
Socket of the hip joint acetabulum
Which sternum segment contains the suprasternal (jugular) notch and articulates with the clavicles?
Xiphoid process inferior
Body middle segment
Sternal angle joint area
Manubrium superior segment
How are true ribs distinguished from false ribs?
True ribs attach directly to sternum
False ribs are upper seven pairs
False ribs attach to sternum body
True ribs lack anterior cartilage
Which statement about ribs 11–12 is accurate?
They are floating ribs without anterior cartilage
They form the suprasternal notch
They articulate directly with the sternum
They attach to cartilage of rib above
Which bone is the collar bone with a medial end articulating with the manubrium and a lateral end joining the scapula?
Clavicle paired bone
Humerus long bone
Ulna medial bone
Radius lateral bone
Which landmarks are found on the inferior end of the humerus forming part of the elbow joint?
Condyles curved articular surfaces
Head ball-like superior end
Acetabulum hip socket
Tibial crest anterior ridge
What is the significance of the medial epicondyle of the humerus?
Creates inside ankle bone
Articulates with tibia
Forms shoulder joint
Protects the ulnar nerve
Which forearm bone is medial and features the olecranon process forming the point of the elbow?
Radius lateral forearm
Ulna medial forearm
Tibia medial leg
Fibula lateral leg
Which components fuse to form each os coxae in the pelvic girdle?
Femur, tibia, patella
Clavicle, manubrium, radius
Sacrum, coccyx, ilium
Ilium, ischium, pubis
Where do the ilium, ischium, and pubis meet to form the hip joint socket?
Acetabulum of the hip
Manubrium of sternum
Olecranon of ulna
Malleolus of tibia
Which bone is the longest and strongest in the body and articulates at the knee via medial and lateral condyles?
Radius forearm
Humerus upper arm
Tibia lower leg
Femur upper leg
Which structure supports the femoral head and is a common site for fractures?
Xiphoid process of sternum
Medial malleolus distal tibia
Tibial crest on anterior margin
Femoral neck between head and shaft
What type of bone is the patella and where is it formed?
Short within wrist
Flat within pelvis
Sesamoid within tendon
Irregular within vertebra
Which feature is a pronounced ridge on the anterior margin of the tibia, commonly called the shin?
Medial malleolus projection
Femoral condyle surface
Olecranon process tip
Tibial crest prominent ridge
Which distal projection of the tibia is often called the inside ankle bone?
Acetabulum hip socket
Xiphoid process inferior sternum
Lateral epicondyle humerus
Medial malleolus distal tibia
Select ALL correct statements about rib classifications.
True ribs are upper seven pairs
False ribs are lower five pairs
Pairs 11–12 lack anterior cartilage
Pairs 8–10 attach to rib above
Which statement best defines an articulation (joint) in the human body?
A cavity where synovial fluid is produced
A space where muscles attach to skeletal bones
A point of union between bones or cartilage
A movable hinge between any two soft tissues
Which joints are correctly matched with mobility and examples?
Amphiarthroses—slightly movable—pubic symphysis, intervertebral joints
Synarthroses—immovable—cranial sutures, sternocostal joints
Synarthroses—freely movable—sacroiliac articulation
Diarthroses—freely movable—shoulder, elbow, wrist
Which feature characterizes amphiarthroses?
Permit significant motion in a joint capsule
Movement is not intended at these joints
Fuse cranial bones during infancy
Allow slight movement, often with cartilage
Which description accurately distinguishes diarthroses from synarthroses?
Diarthroses are immovable, synarthroses are freely movable
Diarthroses are slightly movable, synarthroses are immovable
Diarthroses fuse bones, synarthroses separate bones with cartilage
Diarthroses allow significant movement within a capsule, synarthroses are immovable
Which pairing of joint type and example is incorrect?
Synarthrosis—cranial suture
Amphiarthrosis—pubic symphysis
Diarthrosis—elbow hinge
Synarthrosis—shoulder ball-and-socket
What are cranial sutures?
Membrane-filled spaces in infant skulls
The points where cranial bones fuse
Freely movable joints between skull bones
Cartilage pads between parietal bones
Which statement about fontanelles is accurate?
They are unfused, membrane-filled spaces in infants
They are synovial sacs around diarthroses
They are adult fusion lines between cranial bones
They are cartilaginous pads of amphiarthroses
Where is the anterior fontanelle located?
Between occipital and temporal bones
Between sphenoid and maxilla bones
Between parietal and mandible bones
Between frontal and parietal bones
Which primary action is correctly paired with the sternocleidomastoid muscle?
Flexes and adducts the wrist
Rotates head to opposite side; flexes neck
Extends the thigh; restores erect posture
Flexes and supinates the forearm
Intercostal muscles primarily perform which role in the thorax?
Adduct the thigh powerfully
Supinate the forearm
Extend the shoulder joint
Form and move the chest wall
What is the main function of the diaphragm?
Major muscle of breathing
Primary supinator of the forearm
Powerful hip adductor
Anatomical guide for neck vessels
Which statement best describes the gluteus maximus?
Forms and moves the chest wall
Extends the thigh; causes body to regain erect position
Flexes and adducts the wrist
Flexes and supinates the forearm
Where is the sartorius located relative to the femoral triangle?
Lateral border of the femoral triangle
Medial wall of the femoral triangle
Posterior floor of the femoral triangle
Anterior apex of the femoral triangle
Which pair of origin and insertion is correct for biceps brachii?
Scapula (two heads) to upper forearm
Lumbar vertebrae to femur
Medial epicondyle to base of 2nd metacarpal
Medial and lateral condyles to calcaneus
Which muscles are directly involved in breathing mechanics?
Diaphragm
Intercostals
Gluteus maximus
Sternocleidomastoid
Which feature correctly characterizes the sternocleidomastoid?
Forms a common tendon with soleus
Latin for two-headed muscle of the arm
Accessory muscle of respiration; neck vessel guide
Large triangular muscle on medial thigh
Which muscle pair primarily acts on the wrist joint?
Teres major and biceps brachii
Flexor carpi radialis and flexor carpi ulnaris
Gastrocnemius and sartorius
Adductor longus and adductor magnus
Which description best matches adductor magnus?
Flexes and supinates the forearm
Forms and moves the chest wall
Powerful adductor; also a rotator and hip extender
Extends the thigh; restores erect posture
Gastrocnemius inserts into which structure and is primarily involved in which activities?
Upper forearm; elbow supination
Calcaneus via Achilles; running and jumping
Femur; leg movement
Base of 2nd metacarpal; wrist flexion
Which field specifically studies the blood vascular and lymphatic systems?
Neurology and endocrinology
Immunology and serology
Angiology and lymphology
Cardiology and hematology
Which component primarily transports oxygen and removes carbon dioxide?
Erythrocytes via hemoglobin
Leukocytes in plasma
Platelets via clotting factors
Plasma proteins binding gases
Which items are carried by plasma to cells?
Minerals and hormones
Nitrogenous wastes
Proteins and vitamins
Carbohydrates and fats
Which route best describes removal of metabolic wastes?
To lungs for exhalation
To kidneys for excretion
To spleen for storage
To liver for oxygenation
Which mechanisms contribute to regulation by the circulatory system?
Controlling body temperature
Initiating nerve impulses
Balancing fluid and salts
Buffering blood pH
Which statement about body temperature management is most accurate?
Skin stores heat long term
Heat produced in liver is trapped
Heat from muscles is dispersed
Kidneys generate cooling
Which protective roles are correctly attributed to blood?
Plasma dissolves pathogens
Erythrocytes neutralize toxins
Leukocytes combat infection
Clotting limits blood loss
Which description matches normal blood pH?
6.8 to 7.0, strongly acidic
7.0 exactly, neutral
7.35 to 7.45, slightly alkaline
7.8 to 8.2, highly alkaline
How does blood viscosity compare to water?
Ten times that of water
Equal to water
4.5 to 5.5 times water
Two times that of water
Which set correctly lists typical adult blood properties?
Temperature near 38°C
Volume about 5–6 quarts
pH between 6.5 and 7.0
Specific gravity around 1.041–1.067
Which statement best describes erythrocytes?
Cytoplasmic fragments sealing vessel breaks
Nucleated spheres transporting antibodies
Bi-concave discs without nuclei
Granule-rich cells releasing heparin
Which formed element primarily defends against infection?
Erythrocytes transporting gases
Leukocytes with nuclei
Thrombocytes forming plugs
Plasma proteins only
Platelets are best described as:
Irregular cytoplasmic fragments
Nucleated immune cells
Whole cells with mitochondria
Biconcave oxygen carriers
Which process allows leukocytes to leave blood vessels?
Pinocytosis of plasma fluids
Diapedesis through vessel walls
Endocytosis of antigens
Hemolysis through membrane rupture
Which pair correctly matches granulocyte subtype with a function?
Eosinophils—antibody synthesis
Basophils—produce heparin
Lymphocytes—intravasacular clotting
Neutrophils—oxygen transport
Which leukocyte subtype is an agranulocyte?
Eosinophil phagocyte
Neutrophil phagocyte
Lymphocyte immunity cell
Basophil heparin cell
What percentage of blood is typically plasma?
About twenty percent
Around fifty-five percent
Near five percent
Approximately ninety percent
Which is most numerous among blood cells?
Stem cells in marrow
Erythrocytes transporting gases
Thrombocytes forming clots
Leukocytes defending tissues
Arrange the first three steps of coagulation in correct order.
Fibrin formation, platelet plug, vessel contraction
Vessel contraction, platelet plug, fibrin formation
Platelet plug, fibrinolysis, vessel contraction
Platelet plug, vessel contraction, fibrin formation
Which pathway is triggered by chemicals from damaged tissues?
Intrinsic pathway activation
Extrinsic pathway initiation
Common pathway termination
Fibrinolytic pathway start
Fibrinolysis primarily involves:
Heparin forming fibrin strands
Globulins aggregating platelets
Plasmin breaking down fibrin
Albumin sealing vessel walls
Which anticoagulants are naturally present in blood under normal conditions?
Albumin and globulin
Glucose and bicarbonate
Fibrinogen and plasmin
Antithrombin and heparin
Which component is removed to produce serum from plasma?
Cellular fragments
Water and gases
Clotting factors
Inorganic salts
Which list best represents dissolved substances in plasma?
Gases, wastes, other molecules
Erythrocytes, leukocytes, platelets
Enzymes, hormones, antibodies
Proteins, inorganic salts, nutrients
Blood grouping relies on the presence or absence of which molecules on erythrocyte surfaces?
Agglutinogens acting as antigens
Antibodies binding fibrin
Heparins preventing clots
Globulins transporting gases
Which layer of the heart is primarily responsible for contraction and pumping blood?
Pericardium fibrous protective sac
Epicardium outer serous membrane
Myocardium middle muscular layer
Endocardium inner endothelial layer
Where is the heart located within the body?
In the abdominal cavity near liver
In the cranial cavity beneath skull
In the pelvic cavity behind bladder
In the thoracic cavity within mediastinum
Which statement correctly distinguishes atria from ventricles?
Atria are superior receiving chambers
Ventricles are chambers that receive from lungs
Atria are inferior pumping chambers
Ventricles are superior receiving chambers
Which septum separates the atria from the ventricles?
Intercostal septum
Atrial septum
Atrio-ventricular septum
Ventricular septum
Where is the tricuspid valve located?
At exit of right ventricle into pulmonary trunk
Between left atrium and left ventricle
Between right atrium and right ventricle
At exit of left ventricle into aorta
Which valve prevents backflow from the aorta into the left ventricle?
Pulmonary semilunar valve at trunk
Aortic semilunar valve at aorta
Bicuspid (mitral) valve two cusps
Tricuspid valve with three cusps
Chordae tendineae attached to papillary muscles serve which function for AV valves?
Anchor valve leaflets to prevent inversion
Open semilunar cusps during systole
Delay impulse at AV node transmission
Increase ventricular ejection pressure
Which set correctly matches circulation type and primary pathway?
Pulmonary: right ventricle to lungs
Pulmonary: left ventricle to body
Systemic: right ventricle to lungs
Systemic: left ventricle to body
During the cardiac cycle, what initiates atrial systole?
Contraction of ventricular walls
Closure of semilunar valves
Signal at atrio-ventricular node
Impulse from sino-atrial node
What is the role of the atrio-ventricular (AV) node in conduction?
Sends impulse down ventricular walls
Starts impulse in right atrium
Controls semilunar valve opening
Spreads signal to both atria
Which statement best describes ventricular systole?
Phase only in left ventricle contraction
Phase initiated by SA node firing
Phase when both ventricles contract
Phase of ventricular relaxation
Which heart layer lines the interior chambers with endothelium?
Endocardium inner endothelial lining
Myocardium thick muscular layer
Pericardium tough fibrous covering
Epicardium serous outer lining
Which valves are classified as semilunar?
Tricuspid valve between right chambers
Mitral valve between left chambers
Aortic valve at left ventricular exit
Pulmonary valve at right ventricular exit
Which pairing of chamber and function is correct?
Left ventricle: pumps to body
Right atrium: receives systemic return
Left atrium: receives pulmonary return
Right ventricle: pumps to lungs
Which structural feature divides the two ventricles?
Ventricular septum between ventricles
Atrio-ventricular septum wall
Chordae tendineae cords
Atrial septum between atria
Which structure receives deoxygenated blood from the superior vena cava, inferior vena cava, and coronary sinus?
Left ventricle chamber
Right ventricle chamber
Right atrium chamber
Left atrium chamber
Blood flows from the right atrium to the right ventricle through which valve?
Bicuspid (mitral) valve
Aortic semilunar valve
Tricuspid valve
Pulmonary semilunar valve
What is the immediate destination of blood pumped by the right ventricle during systole?
Coronary arteries
Left atrium chamber
Aorta to body tissues
Pulmonary trunk to lungs
Which vessels return oxygenated blood from the lungs to the heart?
Bronchial veins
Coronary veins
Pulmonary arteries
Pulmonary veins
Blood passes from the left atrium to the left ventricle through which valve?
Aortic semilunar valve
Pulmonary semilunar valve
Tricuspid valve
Bicuspid (mitral) valve
Which valve opens as the left ventricle ejects blood into systemic circulation?
Aortic semilunar valve
Pulmonary semilunar valve
Tricuspid valve leaflet
Bicuspid (mitral) valve
Which combination of tunics forms the wall of an artery?
Media and adventitia only
Intima, media, adventitia
Intima and media layers
Intima only layers
What feature is characteristic of veins compared to arteries?
Thicker muscular walls
Nourished by vasa vasorum
Contain valves sometimes
Carry blood away
Which vessels are the primary site of gas, nutrient, and waste exchange?
Venules conduits
Elastic arteries
Capillaries networks
Arterioles branches
What term describes the union of distal ends of two arteries providing alternative pathways?
Collateral circulation
Anastomosis
Portal system
Vasa vasorum
Which statement best defines collateral circulation?
Arteries feeding only muscles
Veins draining into portal
Two or more vessels supplying
Single vessel supplying tissue
Which arteries branch from the ascending aorta to supply the myocardium?
Common carotids pair
Subclavian arteries pair
Brachiocephalic trunk
Coronary arteries pair
Which three branches arise from the arch of the aorta?
Brachiocephalic trunk
Left common carotid artery
Left subclavian artery
Right coronary artery
Inferior phrenic artery
Which are parietal branches of the descending thoracic aorta?
Bronchial arteries
Esophageal arteries
Pericardial arteries
Posterior intercostals
Superior phrenics
Which unpaired visceral branches originate from the abdominal aorta?
Celiac trunk
Renal arteries
Inferior mesenteric artery
Gonadal arteries
Superior mesenteric artery
Which organ group is primarily supplied by the celiac trunk?
Kidneys and adrenals
Stomach and liver
Posterior thorax
Pelvic viscera
Which paired visceral branches of the abdominal aorta supply paired abdominal organs?
Gonadal arteries
Renal arteries
Common iliacs
Suprarenal arteries
Inferior mesenteric
Which arteries directly supply the brain via the carotid bifurcation?
Basilar artery trunk
External carotid trunks
Internal carotid trunks
Vertebral artery pair
Which vessels form the Circle of Willis at the brain base?
Right and left external carotids
Right and left vertebral arteries
Subclavian artery branches
Right and left internal carotids
Basilar artery branches
Identify the correct arterial path to the hand in the upper limb.
Subclavian to axillary
Axillary to brachial
All of the above path
Brachial to radial/ulnar
Which artery sequence leads blood to the foot from the abdomen?
External iliac to femoral
Common iliac to femoral
Popliteal to tibial arteries
Femoral to popliteal
Which structure drains the thoracic walls into venous circulation?
Azygous system
Portal system
Hepatic veins
Lumbar veins
Which veins unite to form the superior vena cava?
Hepatic portal vein
Renal veins pair
Brachiocephalic veins
Common iliac veins
Which statement correctly describes the hepatic portal system?
Formed by jugular veins
Carries blood to kidneys
Unites digestive organ veins
Directly drains to IVC
Which venous structure drains the brain and leads to the internal jugular vein?
Dural venous sinuses
Superior sagittal artery
External jugular vein
Azygous vein trunk
Which statement best describes lymph formation in tissues?
Red blood cells leak from arterioles to form lymph
Interstitial fluid enters lymphatic vessels as lymph
Blood plasma enters venules to form lymph
Capillary endothelial cells secrete lymph actively
Excess accumulation of tissue fluid in the interstitial space is called what?
Ischemia
Ascites
Effusion
Edema
Which body region is primarily drained by the right lymphatic duct?
Superior left quadrant of the body
Both inferior quadrants of the body
Inferior left quadrant of the body
Superior right quadrant of the body
The thoracic duct begins at which structure before ascending to drain most of the body?
Cisterna chyli
Carotid sinus
Aortic hiatus
Hepatic portal
Select the regions predominantly drained by the thoracic duct (left lymphatic duct).
Inferior right quadrant
Superior left quadrant
Superior right quadrant
Inferior left quadrant
Which statement about lymph nodes is accurate?
They produce insulin for glucose regulation
They filter lymph and cluster in axilla, groin, neck
They store bile and attach to the duodenum
They generate chyle in the small intestine
Lacteals in the small intestine primarily function to absorb what, producing a milky fluid called chyle?
Proteins
Minerals
Fats
Simple sugars
Which lymphoid organ is located behind the sternum and is essential for lymphocyte development?
Spleen
Tonsils
Pancreas
Thymus gland
Which sequence correctly orders early human development from ovulation to implantation?
Fertilization, ovulation, cleavage, blastocyst, implantation
Ovulation, fertilization, morula, blastocyst, zygote
Ovulation, fertilization, cleavage, morula, implantation
Ovulation, zygote, cleavage, morula, implantation
During fertilization, what structure is formed when a single sperm unites with an ovum?
Blastocyst
Morula
Zygote
Embryo
Cleavage in early development most accurately describes which process?
Transformation of morula into blastocyst
Attachment of blastocyst to endometrium
Rapid cell divisions forming a morula
Release of the ovum from an ovary
Implantation typically occurs how many days after fertilization?
3–5 days after fertilization
10–14 days after fertilization
15–20 days after fertilization
7–9 days after fertilization
Which primary germ layer predominantly gives rise to nerve tissue including brain and spinal cord?
Ectoderm (outer)
Mesoderm (middle)
Endoderm (inner)
Trophoblast (outer)
Which derivatives are chiefly formed from the mesoderm?
Connective tissue and muscle tissue
Epidermis and nasal epithelium
Blood vessels epithelium and body cavities
Alimentary canal epithelium and bladder
Which structures primarily arise from the endoderm germ layer?
Epidermis of the skin
Alimentary canal epithelium
Ureters epithelium
Respiratory system epithelium
For what period is the developing human termed an embryo?
From conception until birth
First two lunar months only
First trimester exclusively
Third lunar month onward
Which statement best distinguishes an embryo from a fetus in human development?
Fetus only during implantation
Embryo first two lunar months
Fetus before two lunar months
Embryo after third lunar month
