2. The right coronary artery follows the coronary sulcus around the heart and branches into:
the right marginal branch and circumflex branch
the posterior interventricular branch and circumflex branch
the anterior interventricular branch and circumflex branch
the posterior interventricular branch and right marginal branch

3. The border between the atria and the ventricles is a deep groove, the _____, while the boundary lines between the left and right ventricles are shallower depressions, the _____.
interventricular sulci, coronary sulcus
interatrial sulcus, coronary sulci
coronary sulcus, interventricular sulci
interatrial sulci, interventricular sulcus

4. The three arteries that branch from the celiac artery to supply the digestive organs are:
left gastric, common hepatic, splenic
common gastric, left splenic, hepatic
suprarenal, renal, lumbar
superior mesenteric, inferior mesenteric, splenic

5. What would happen if the papillary muscles failed to contract?
the ventricles would not pump blood
blood would not enter the atria
the semilunar valves would not open
the AV valves would not close properly

6. The connective tissue sheath of the _____ functions to stabilize and anchor the blood vessel of which it is a layer.
tunica externa
tunica media
tunica intima
tunica interna

7. The pulmonary circuit begins with the:
left pulmonary artery
right pulmonary artery
right ventricle
pulmonary trunk

8. The three large, elastic arteries that originate along the aortic arch and that deliver blood to the head, neck, shoulders and upper extremity are the:
right subclavian, brachiocephalic, left common carotid
brachiocephalic, left subclavian, right subclavian
brachiocephalic, left common carotid, left subclavian
right common carotid, left common carotid, brachiocephalic

9. The large blood vessel that collects most of the venous blood from organs located below the level of the diaphragm is the:
azygos vein
common iliac
great saphenous vein
inferior vena cava

10. Plasma cells are responsible for the production and secretion of:
large granular lymphocytes
immunoglobulins
antibodies
antigens

11. Which lymphocytes help to regulate and coordinate the immune system?
cytotoxic T cells and NK cells
plasma cells
B cells
helper T cells and suppressor T cells

12. The inner surface of the thoracic wall is covered by the _____, while the outer surfaces of the lungs are covered by the _____.
serous pleura, mucous pleura
parietal pleura, visceral pleura
thoracic pleura, lobar pleura
visceral pleura, serous pleura

13. Which of the following structures are included in the lower respiratory system?
bronchi, respiratory bronchioles, alveolar sacs, alveoli
trachea, lungs, respiratory bronchioles, alveoli
pharynx, larynx, bronchi, lungs
larynx, trachea, bronchi, lungs

14. The following sequence lists veins carrying a drop of blood from the leg to the heart. Which vein is missing? Posterior tibial, popliteal, femoral, common iliac, inferior vena cava.
deep femoral
great saphenous
internal iliac
external iliac

15. The primary function of the lymphatic system is:
elimination of local variations in interstitial fluid's chemical composition
maintenance of normal blood volume
production, maintenance and distribution of lymphocytes
all of the above

16. Which of the following carry exclusively oxygen-rich blood?
systemic arteries, systemic veins
pulmonary veins, systemic arteries
pulmonary arteries, systemic arteries
pulmonary arteries, pulmonary veins

17. Larger lymphatic vessels are like veins in all of the following ways except:
found in association with blood vessels
pressures exceed those in veins
both contain valves
walls have comparable layers

18. The respiratory system cooperates with the circulatory system to:
help control body fluid pH
help regulate blood pressure
help regulate blood volume
all of the above

19. The veins draining digestive organs (other than the liver) flow into a network in which a blood vessel connects two capillary beds. This system is known as the:
renal portal system
hepatic sinusoids
hepatic portal system
anastomosis of veins

20. The pacemaker of the heart:
is in the atrioventricular (AV) node
is slowed by stimulation of the vagus nerve
increases its rate of firing with an increase in body temperature
both b and c

21. In which selection are the pharyngeal region and its lining correctly paired?
nasopharynx, pseudostratified columnar epithelium
oropharynx, stratified squamous epithelium
laryngopharynx, stratified squamous epithelium
all of the above

22. The most important muscles of respiration are:
external and internal intercostals, scalenes, serratus anterior
external and internal intercostals, rectus abdominus, abdominal obliques
external and internal intercostals, diaphragm
diaphragm, abdominal obliques, rectus abdominus

23. The strong, tendinous cords called chordae tendinae:
strengthen the interventricular septum
prevent the atrioventricular valves from everting
form the fibrous skeleton of the heart
support the pericardium surrounding the heart

24. A person's blood pressure is generally taken with a cuff around the humerus where constriction is applied to the:
subclavian artery
ulnar artery
brachial artery
radial artery

25. Which of the following represents the correct sequence in which inspired air flows?
choanae, pharynx, nasal fossae, larynx, trachea, bronchi, lungs
nasal fossae, pharynx, larynx, choanae, trachea, bronchi, lungs
nasal fossae, choanae, pharynx, larynx, trachea, bronchi, lungs
choanae, nasal fossae, larynx, pharynx, trachea, bronchi, lungs

26. The functional units of the respiratory system where gas exchange occurs are the:
alveoli
terminal bronchioles
pulmonary vessels
lungs

27. The region where a bronchus and pulmonary vessel enter and exit the lungs is called:
the cupola
the hilum
the apex
the capsule

28. The vocal chords are attached to the:
cricoid and thyroid cartilages
cuneiform and cricoid cartilages
corniculate and thryoid cartilages
arytenoid and thryoid cartilages

29. Which of the following does not branch off of the abdominal aorta?
the coronaries
the superior mesenteric artery
the renal artery
the celiac artery

30. At any given moment, which cardiovascular components contain the most blood?
all capillaries and arterioles
the systemic veins and venules
the entire pulmonary circuit
the heart and systemic arteries

31. Which selection lists the major components of the lymphatic system?
spleen, thymus, tonsils
lymph, lymphatic vessels, lymphatic tissues and organs
lymphocytes, lymph, lymph nodes
thoracic duct, right lymphatic duct, lymph

32. The blood vessels whose histological structure permits a two-way exchange of substances between blood and body cells are the:
capillaries
arterioles
venules
all of the above

33. Venous blood from the tissues and organs of the head, neck, chest, shoulders and upper extremities is received by the:
jugular veins
subclavian veins
superior vena cava
inferior vena cava

34. Of the following, which is NOT one of the great vessels of the heart?
pulmonary arteries
coronary arteries
superior vena cava
pulmonary veins

35. Which of the following statements is FALSE concerning the right atrium?
it receives venous blood through three openings
the sinoatrial node is contained within the posterior wall
when contracted, it empties across the tricuspid valve into the right ventricle
all of the above

36. The most common site for taking a person's pulse is the:
radial artery
median artery
carotid artery
brachial artery

37. The most common site for taking blood samples is the:
brachial vein
ulnar vein
median cubital vein
brachial artery

38. Which of the following is NOT a function of the lymphatic system?
transports interstitial fluid back to the bloodstream
transports absorbed fats from the intestine to the blood
provides immunological defenses
filters metabolic waste

39. Which of the following is not characteristic of the internal carotid arteries?
ascend to level of optic nerve and branch into three large arteries serving the eyes and brain
deliver blood to the brain
enter skull through the carotid foramina of the temporal bone
supply structures of the neck, pharynx, larynx, lowerjaw and face

40. The way in which arteries of the pulmonary circuit differ from those of the systemic circuit is that:
there is no difference
they carry deoxygenated blood
they have a thicker tunica media
they carry a greater proportion of the blood volume

Score =
Correct answers: