Which of the following is NOT a pericapillary cell found in capillaries?
A. macrophages
B. neurons
C. undifferentiated smooth muscle cells
D. fibroblasts
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Question 2) The exchange of nutrients and gases between the blood and tissue cells is the primary function of
A. veins.
B. arteries.
C. arterioles.
D. capillaries.
E. venules.
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Question 3) The lining of a capillary is called the
A. endothelium.
B. adventitia.
C. pericapillary layer.
D. thoroughfare layer.
E. tunica adventitia.
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Question 4) Which of the following enhances the exchange between capillary walls and the interstitial spaces?
A. the thinness of the capillary wall
B. minimal branching in the capillary bed
C. increased blood velocity through the capillaries
D. the high pressure in the interstitial spaces
E. the stratification of the capillary wall
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Question 5) What is the order of the blood vessels that a red blood cell would pass through as the blood leaves the heart, travels to a tissue, and then returns to the heart?
A. arteriole, artery, capillary, vein, venule
B. capillary, arteriole, artery, vein, venule
C. artery, arteriole, capillary, venule, vein
D. vein, capillary, artery, arteriole, venule
E. artery, venule, capillary, arteriole, vein
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Question 6) Which function does the circulatory system share with the heart?
A. directs blood flow to tissues
B. exchanges nutrients and wastes with cells
C. transports hormones to all areas of the body
D. regulates blood pressure
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Question 7) Blood is moved through the vascular system by
A. valves in the wall of the blood vessels.
B. peristalsis caused by smooth muscle in the blood vessel walls.
C. pressure gradients created by the heart.
D. osmotic pressure.
E. viscosity of the blood.
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Question 8) Systemic blood vessels transport blood
A. from the left ventricle through the body to the left atrium.
B. from the left ventricle through the body to the right atrium.
C. from the right ventricle through the body to the left atrium.
D. from the right ventricle through the body to the right atrium.
E. from the left ventricle to the lungs.
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Question 9) 137. The peripheral chemoreceptors that respond to oxygen levels of the blood and regulate heart activity are located in _______________.
A.
the left ventricle
B.
the infundibulum of the hypothalamus
C.
structures near the carotids and aortic arch
D.
the medulla oblongata
E.
the right ventricle
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Question 10) Diagnostic tests done on a patient show that many coronary arteries, including the left main coronary artery are severely narrowed. Which of the following is the best course of action to treat this patient?
A.
Angiogram
B.
Angioplasty
C.
Coronary bypass surgery
D.
Electrocardiogram
E.
Urokinase injections
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