Question 1

A blood vessel that ranges from 0.3 mm to about 1 cm in diameter and has a large tunica media relative to the size of the lumen is

Accepted Answer

A)   a muscular artery.
B)   a capillary.
C)   an elastic artery.
D)   an arteriole.

Question 2

Wide leaky capillaries found in bone marrow and spleen.

Accepted Answer

A)   continuous capillaries
B)   metarterioles
C)   sinusoids
D)   fenestrated capillaries
E)   none of the above

Question 3

The abdominal aorta divides at its distal end into which arteries?

Accepted Answer

A)   the femoral arteries
B)   the common iliac arteries
C)   the external iliac arteries
D)   the internal iliac arteries

Question 4

Phlebitis is

Accepted Answer

A)   ballooning of an artery.
B)   cancer of the tunica intima.
C)   a condition characterized by excessively leaky capillaries.
D)   inflammation of a vein.

Question 5

Which of the following statements about arterioles is false?

Accepted Answer

A)   They have the largest content of smooth muscle in their tunica media.
B)   They regulate the flow of blood to capillary beds through contraction and relaxation of the tunica media.
C)   They redirect blood flow in a sympathetic response to skeletal muscle.
D)   They can lead into metarterioles.

Question 6

Figure 20.1
Use the diagram above to answer the following questions.
-Identify the letter that indicates the subendothelial layer associated with larger blood vessels.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   E

Question 7

Which of the following is most likely to become a varicose vein?

Accepted Answer

A)   the femoral vein
B)   the popliteal vein
C)   the fibular (peroneal)  vein
D)   the saphenous vein

Question 8

Which body tissues lack capillaries?

Accepted Answer

A)   tendons and ligaments
B)   the myocardium and epicardium of the heart
C)   bones
D)   the lens and the cornea

Question 9

What prevents the backflow of blood in veins?

Accepted Answer

A)   valves
B)   increased blood pressure
C)   thick smooth muscle and elastic layers
D)   the narrowed lumen

Question 10

The right gonadal vein drains into the

Accepted Answer

A)   lumbar vein.
B)   inferior vena cava.
C)   internal iliac vein.
D)   renal vein.

Question 11

Structure that regulates blood flow into true capillaries.

Accepted Answer

A)   fenestrations
B)   metarteriole
C)   thoroughfare channel
D)   sinusoids
E)   precapillary sphincter

Question 12

Which arteries connect the basilar artery and the internal carotid artery forming the posterior aspect of the cerebral arterial circle?

Accepted Answer

A)   ulnar artery that encircles the elbow joint
B)   anterior communicating arteries
C)   genicular arteries that encircle the knee
D)   posterior communicating arteries

Question 13

Postcapillary venules function much like true capillaries.

Accepted Answer

A) True 
 B)False

Question 14

Figure 20.1
Use the diagram above to answer the following questions.
-Identify the letter that is indicating the lumen.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   E

Question 15

The pulse of the posterior tibial artery is palpated behind the knee.

Accepted Answer

A) True 
 B)False

Question 16

Systemic venous blood that is oxygen-poor but contains the lowest concentration of nitrogenous wastes occurs in the

Accepted Answer

A)   hepatic portal vein.
B)   renal veins.
C)   pulmonary veins.
D)   umbilical veins of the fetus.

Question 17

The blood-brain barrier consists of capillaries with complete and no intercellular clefts.

Accepted Answer

The answer of The blood-brain barrier consists of capillaries with...

Question 18

Arterioles and venules have a vasa vasorum to provide nutrients to their outer walls, whereas the inner walls receive nutrients from blood in the lumen.

Accepted Answer

A) True 
 B)False

Question 19

Blood passing through the fetal ductus arteriosus bypasses the

Accepted Answer

A)   right ventricle, pulmonary trunk, and lungs.
B)   right atrium and ventricle.
C)   pulmonary trunk and lungs.
D)   lungs, left atrium, and ventricle.

Question 20

In a capillary bed, relaxation of the precapillary sphincters causes more blood to flow

Accepted Answer

A)   through the metarterioles.
B)   through the true capillaries.
C)   into the arterioles.
D)   into the thoroughfare channels.

Exam 20: The Cardiovascular System: Blood

The pulse of the posterior tibial artery is palpated behind the knee.

Correct AnswerverifiedShow Answer

Phlebitis is

Correct AnswerverifiedShow Answer

Blood passing through the fetal ductus arteriosus bypasses the

Correct AnswerverifiedShow Answer

In a capillary bed, relaxation of the precapillary sphincters causes more blood to flow

Correct AnswerverifiedShow Answer

Figure 20.1 Use the diagram above to answer the following questions. -Identify the letter that is indicating the lumen.

Correct AnswerverifiedShow Answer

Wide leaky capillaries found in bone marrow and spleen.

Correct AnswerverifiedShow Answer

The abdominal aorta divides at its distal end into which arteries?

Correct AnswerverifiedShow Answer

A blood vessel that ranges from 0.3 mm to about 1 cm in diameter and has a large tunica media relative to the size of the lumen is

Correct AnswerverifiedShow Answer

Postcapillary venules function much like true capillaries.

Correct AnswerverifiedShow Answer

Which of the following statements about arterioles is false?

Correct AnswerverifiedShow Answer

What prevents the backflow of blood in veins?

Correct AnswerverifiedShow Answer

Which body tissues lack capillaries?

Correct AnswerverifiedShow Answer

The right gonadal vein drains into the

Correct AnswerverifiedShow Answer

Which arteries connect the basilar artery and the internal carotid artery forming the posterior aspect of the cerebral arterial circle?

Correct AnswerverifiedShow Answer

Which of the following is most likely to become a varicose vein?

Correct AnswerverifiedShow Answer

Arterioles and venules have a vasa vasorum to provide nutrients to their outer walls, whereas the inner walls receive nutrients from blood in the lumen.

Correct AnswerverifiedShow Answer

Figure 20.1 Use the diagram above to answer the following questions. -Identify the letter that indicates the subendothelial layer associated with larger blood vessels.

Correct AnswerverifiedShow Answer

The blood-brain barrier consists of capillaries with complete and no intercellular clefts.

Correct AnswerverifiedShow Answer

Structure that regulates blood flow into true capillaries.

Correct AnswerverifiedShow Answer

Systemic venous blood that is oxygen-poor but contains the lowest concentration of nitrogenous wastes occurs in the

Correct AnswerverifiedShow Answer

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