Question 1

The velocity of blood flow inside a blood vessel

Accepted Answer

A)   is equal to the blood pressure.
B)   is faster in the center of the blood vessel.
C)   is most rapid at a bend or turn in the vessel.
D)   increases along the walls of the blood vessel.
E)   is more rapid along the sides of the vessel.F) A) and B)
G) A) and C)

Question 2

Which of the following would lead to relaxation of the precapillary sphincter?

Accepted Answer

A)   decreased tissue metabolism
B)   decreased oxygen levels in tissue cells served by the capillary
C)   decreased carbon dioxide concentration in the capillary bed
D)   decreased lactic acid production by cells in the capillary bed
E)   decreased nitric acid levelsF) C) and D)
G) None of the above

Question 3

During exchange at the capillaries, what can cross the endothelial cells, diffusing through the plasma membranes?

Accepted Answer

A)   Proteins
B)   Large water-soluble substances
C)   Hormones
D)   Red blood cells
E)   Lipid-soluble substancesF) A) and B)
G) C) and D)

Question 4

Match the term with the best description.
-Laplace's Law

Accepted Answer

A)  arteriosclerosis
B)  produced by turbulent blood flow
C)  blood flow is directly proportional to pressure differences and inversely proportional to resistance
D)  as pressure in a vessel decreases, the force holding it open decreases, and the vessel tends to collapse
E)  a characteristic of the venous systemF) A) and D)
G) A) and C)

Question 5

Distributing arteries

Accepted Answer

A)   contain a lot of elastic tissue.
B)   contain a thick tunica media.
C)   are strong, rigid vessels.
D)   transport blood from arterioles to capillaries.
E)   do not contain smooth muscle in their walls.F) A) and C)
G) B) and C)

Question 6

Blood is moved through the vascular system by

Accepted Answer

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.F) A) and E)
G) B) and C)

Question 7

All of the following describe the actions of the adrenal medullary mechanism, except.

Accepted Answer

A)   Responds in the short-term
B)   Is rapid-acting
C)   Responds within seconds
D)   Is usually active for monthsE) None of the above
F) All of the above

Question 8

A thrombus in the first branch (not including coronary arteries)  off of the aortic arch might affect the flow of blood to which of the following structures?

Accepted Answer

A)   right arm
B)   right side of the brain
C)   left side of the brain
D)   left arm
E)   both the right arm and the right side of the brainF) A) and B)
G) A) and D)

Question 9

Continuous capillaries

Accepted Answer

A)   have many thin areas called fenestrae.
B)   are freely permeable to large molecules such as hormones.
C)   have a wall where the endothelial cells fit very tightly together.
D)   are more permeable then fenestrated capillaries but not as permeable as sinusoidal capillaries.
E)   are characterized by continuous pores.F) A) and D)
G) B) and D)

Question 10

Match the term with the appropriate description.
-arteriosclerosis

Accepted Answer

A)  a bulge (a weak spot)  in the artery wall
B)  degenerative changes in arteries
C)  an overstretching of the veins of the lower extremities
D)  inflammation of the veins
E)  small vessels that supply nutrients to large arteriesF) All of the above
G) D) and E)

Question 11

Arteriosclerosis results in decreased compliance, which in turn causes the pulse pressure to

Accepted Answer

A)   increase.
B)   decrease.
C)   increase, then decrease.
D)   decrease, then increase.
E)   remain the same.F) A) and C)
G) C) and D)

Question 12

Match the following with the appropriate description.
-carotid sinuses

Accepted Answer

A)  formed when the right and left vertebral arteries unite
B)  supplies blood to the face, nose, and mouth
C)  terminates by forming the middle cerebral arteries
D)  supplies blood to the arm and shoulder regions
E)  sense organs that monitor blood pressureF) B) and D)
G) B) and C)

Question 13

In which of the following would you detect a weak pulse?

Accepted Answer

A)   hypertension
B)   hemorrhagic shock
C)   fluid excess
D)   increased stroke volume
E)   a healthy young personF) B) and D)
G) A) and C)

Question 14

Atherosclerosis is the

Accepted Answer

A)   hypertrophy of the tunica intima.
B)   stretching of arterial walls.
C)   inflammation of veins.
D)   deposition of plaques in arterial walls.E) All of the above
F) A) and D)

Question 15

An obstruction in the inferior vena cava would hamper the return of blood from the

Accepted Answer

A)   head and neck.
B)   upper extremities.
C)   lungs.
D)   abdomen, pelvis, and lower limbs.
E)   heart.F) A) and E)
G) B) and D)

Question 16

From the heart to body tissues, which of the following sequences of vessels is correct?

Accepted Answer

A)   muscular artery, arteriole, elastic artery, capillary
B)   arteriole, muscular artery, elastic artery, capillary
C)   elastic artery, muscular artery, arteriole, capillary
D)   elastic artery, arteriole, muscular artery, capillary
E)   distributing artery, muscular artery, medium artery, capillaryF) None of the above
G) B) and E)

Question 17

Describe the critical closing pressure.

Accepted Answer

A)   The pressure needed to cause Korotkoff sounds.
B)   The pressure exerted on the aorta during the cardiac cycle.
C)   The pressure found in large veins of the leg.
D)   The pressure below which a vessel collapses.E) B) and D)
F) A) and B)

Question 18

Vasoconstriction is caused by ______ stimulation of vascular smooth muscle; ______ stimulation of vascular smooth muscle causes vasodilation.

Accepted Answer

A)   decreased; increased
B)   parasympathetic; sympathetic
C)   sympathetic; increased
D)   parasympathetic; decreased
E)   sympathetic; parasympatheticF) A) and C)
G) A) and D)

Question 19

Valves similar to the semilunar valves of the heart are found in medium and large

Accepted Answer

A)   arteries.
B)   arterioles.
C)   capillaries.
D)   venules.
E)   veins.F) B) and C)
G) B) and E)

Question 20

The ______ vein connects the basilic vein and cephalic vein.

Accepted Answer

A)   axillary
B)   subclavian
C)   brachial
D)   median antebrachial
E)   median cubitalF) A) and E)
G) A) and C)

Exam 21: Cardiovascular System: Blood Vessels and Circulation

The velocity of blood flow inside a blood vessel

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Vasoconstriction is caused by ______ stimulation of vascular smooth muscle; ______ stimulation of vascular smooth muscle causes vasodilation.

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Match the term with the best description. -Laplace's Law

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Which of the following would lead to relaxation of the precapillary sphincter?

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Blood is moved through the vascular system by

Correct AnswerverifiedShow Answer

Match the term with the appropriate description. -arteriosclerosis

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During exchange at the capillaries, what can cross the endothelial cells, diffusing through the plasma membranes?

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Distributing arteries

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Atherosclerosis is the

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Match the following with the appropriate description. -carotid sinuses

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Continuous capillaries

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Describe the critical closing pressure.

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A thrombus in the first branch (not including coronary arteries) off of the aortic arch might affect the flow of blood to which of the following structures?

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In which of the following would you detect a weak pulse?

Correct AnswerverifiedShow Answer

The ______ vein connects the basilic vein and cephalic vein.

Correct AnswerverifiedShow Answer

Arteriosclerosis results in decreased compliance, which in turn causes the pulse pressure to

Correct AnswerverifiedShow Answer

An obstruction in the inferior vena cava would hamper the return of blood from the

Correct AnswerverifiedShow Answer

All of the following describe the actions of the adrenal medullary mechanism, except.

Correct AnswerverifiedShow Answer

From the heart to body tissues, which of the following sequences of vessels is correct?

Correct AnswerverifiedShow Answer

Valves similar to the semilunar valves of the heart are found in medium and large

Correct AnswerverifiedShow Answer

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Vasoconstriction is caused by stimulation of vascular smooth muscle; stimulation of vascular smooth muscle causes vasodilation.

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