Question 1

Why does nutrient-rich blood of the hepatic portal vein pass first through the liver before this blood is returned to the heart?

Accepted Answer

A)   To allow the liver to add more wastes to the blood
B)   The liver needs more nourishment than other tissues; hence nutrients first pass through the liver
C)   To allow the liver to add more nutrients to the blood
D)   To allow the liver to store or modify the nutrientsE) B) and D)
F) B) and C)

Question 2

Which of the following chemical substances,when released into the blood,would cause blood pressure to decrease?

Accepted Answer

A)  angiotensin II (active angiotensin) 
B)  aldosterone
C)  ADH
D)  vasopressin
E)  atrial natriuretic hormoneF) A) and B)
G) A) and C)

Question 3

The visceral branches of the internal iliac arteries supply blood to the

Accepted Answer

A)  external genitalia.
B)  urinary bladder,rectum,and reproductive organs.
C)  lower leg.
D)  anterior abdominal wall.
E)  lumbar and gluteal muscles.F) A) and C)
G) A) and B)

Question 4

According to Poiseuille's law,a small decrease in the diameter of a vessel will

Accepted Answer

A)  dramatically decrease blood flow.
B)  slightly decrease blood flow.
C)  not affect blood flow.
D)  slightly increase blood flow.
E)  dramatically increase blood flow.F) C) and D)
G) A) and E)

Question 5

When baroreceptors sense a drop in blood pressure,the vasomotor center responds by:

Accepted Answer

A)   suppressing cardiac function
B)   reducing vasomotor tone
C)   triggering peripheral vasodilation
D)   triggering peripheral vasoconstrictionE) A) and B)
F) None of the above

Question 6

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) A) and E)
G) B) and E)

Question 7

Select the answer that is not true when comparing veins and arteries of the same diameter.

Accepted Answer

A)   Veins have thinner walls.
B)   Veins have valves.
C)   Veins have fewer smooth muscle fibers.
D)   Veins have a larger lumen.
E)   Veins have more elastic tissue.F) C) and E)
G) All of the above

Question 8

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) A) and D)
G) A) and E)

Question 9

The longest vein in the body is the

Accepted Answer

A)  superior vena cava.
B)  inferior vena cava.
C)  hepatic portal vein.
D)  great saphenous vein.
E)  femoral vein.F) C) and E)
G) A) and B)

Question 10

Blood flow into the deep and superficial palmar arches originates from the ______ and ____ arteries.

Accepted Answer

A)   humeral circumflex; deep brachial
B)   superficial palmar arch; digital
C)   brachial; subclavian
D)   axillary; subclavian
E)   radial; ulnarF) C) and E)
G) All of the above

Question 11

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 arteries,F) A) and E)
G) B) and D)

Question 12

Which of the following blood vessels supplies blood to the diaphragm?

Accepted Answer

A)  axillary artery
B)  intercostal artery
C)  superior phrenic artery
D)  inferior mesenteric artery
E)  gastric arteryF) A) and B)
G) A) and C)

Question 13

Which of the following factors assists in the return of venous blood to the heart? (1) arterial dilation
(2) valves in the veins
(3) sympathetic stimulation
(4) compression of veins by muscular movements

Accepted Answer

A)  1 and 2
B)  1,2,3
C)  1,2,3,4
D)  2,3,4
E)  1,3,4F) A) and B)
G) A) and C)

Question 14

Which vessel is often used to draw blood from a patient?

Accepted Answer

A)  radial vein
B)  brachial artery
C)  median cubital vein
D)  cephalic veinE) All of the above
F) A) and D)

Question 15

The greatest resistance to blood flow and therefore the greatest drop in pressure occurs as blood passes through the ______.

Accepted Answer

A)   venules
B)   large arteries
C)   large veins
D)   arteriolesE) B) and C)
F) A) and D)

Question 16

Match the vessel with the appropriate description.
-femoral artery

Accepted Answer

A)  supplies blood to the pelvic area
B)  formed by the bifurcation of the abdominal aorta
C)  the continuation of the femoral artery
D)  extends from the common iliac artery to the thigh
E)  continuation of the external iliac artery into the thighF) A) and C)
G) A) and B)

Question 17

Increased venous tone will

Accepted Answer

A)  relax the veins.
B)  help return blood to the heart.
C)  allow blood to pool in the veins.
D)  stabilize blood velocity in the veins.
E)  dilate the veins.F) B) and C)
G) A) and C)

Question 18

Which of the following statements concerning blood vessel walls is true?

Accepted Answer

A)  The tunica intima is the innermost layer of a blood vessel wall.
B)  The tunica media is found in all blood vessels except veins.
C)  The tunica adventitia is composed of smooth muscle and endothelium.
D)  Capillaries have both a tunica intima and a tunica media.
E)  Vessel diameter is controlled primarily by the tunica intima.F) D) and E)
G) A) and E)

Question 19

Which of the following is NOT a long-term regulator of blood pressure?

Accepted Answer

A)  renin-angiotensin-aldosterone mechanism
B)  vasopressin mechanism
C)  stress-relaxation response
D)  oxygen tension responseE) C) and D)
F) B) and C)

Question 20

What structure helps to regulate body temperature?

Accepted Answer

A)  glomus
B)  tunic
C)  fenestrae
D)  metarterioleE) A) and D)
F) B) and C)

Exam 21: Cardiovascular System: Blood Vessels and Circulation

Match the following with the appropriate description. -carotid sinuses

Correct AnswerverifiedShow Answer

Which of the following is NOT a long-term regulator of blood pressure?

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The greatest resistance to blood flow and therefore the greatest drop in pressure occurs as blood passes through the ______.

Correct AnswerverifiedShow Answer

Which of the following factors assists in the return of venous blood to the heart? (1) arterial dilation (2) valves in the veins (3) sympathetic stimulation (4) compression of veins by muscular movements

Correct AnswerverifiedShow Answer

Which of the following statements concerning blood vessel walls is true?

Correct AnswerverifiedShow Answer

The longest vein in the body is the

Correct AnswerverifiedShow Answer

Which of the following blood vessels supplies blood to the diaphragm?

Correct AnswerverifiedShow Answer

Increased venous tone will

Correct AnswerverifiedShow Answer

The visceral branches of the internal iliac arteries supply blood to the

Correct AnswerverifiedShow Answer

Match the term with the appropriate description. -arteriosclerosis

Correct AnswerverifiedShow Answer

When baroreceptors sense a drop in blood pressure,the vasomotor center responds by:

Correct AnswerverifiedShow Answer

Match the vessel with the appropriate description. -femoral artery

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Blood flow into the deep and superficial palmar arches originates from the ______ and ____ arteries.

Correct AnswerverifiedShow Answer

According to Poiseuille's law,a small decrease in the diameter of a vessel will

Correct AnswerverifiedShow Answer

Select the answer that is not true when comparing veins and arteries of the same diameter.

Correct AnswerverifiedShow Answer

What structure helps to regulate body temperature?

Correct AnswerverifiedShow Answer

Why does nutrient-rich blood of the hepatic portal vein pass first through the liver before this blood is returned to the heart?

Correct AnswerverifiedShow Answer

Which vessel is often used to draw blood from a patient?

Correct AnswerverifiedShow Answer

Which of the following chemical substances,when released into the blood,would cause blood pressure to decrease?

Correct AnswerverifiedShow Answer

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Blood flow into the deep and superficial palmar arches originates from the __ and arteries.

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