Blood Vessels 5

Question 1

Vickie has a tumor that causes her to secrete
excess amounts of the hormone ADH. Because
of the elevated level of hormone, she exhibits
A. decreased blood volume.
B. increased blood pressure.
C. peripheral vasoconstriction.
D. polycythemia.
E. both B and C

Answer 1

B. increased blood pressure.

Question 2

Which layer of a blood vessel contains
concentric sheets of smooth muscle
tissue?
A.	tunica intima
B.	external elastic membrane
C.	tunica media
D.	internal elastic membrane
E.	tunica externa

Answer 2

C. tunica media

Question 3

Pulmonary arteries carry blood to the
A.	right atrium.
B.	left atrium.
C.	lungs.
D.	aorta.
E.	systemic circuit.

Answer 3

C. lungs.

Question 4

The vessel that receives blood from the
head, neck, chest, shoulders, and arms is
the
A.	internal jugular vein.
B.	external jugular vein.
C.	superior vena cava.
D.	inferior vena cava.
E.	coronary sinus.

Answer 4

C. superior vena cava.

Question 5

The loss of vasomotor tone without a
simultaneous loss of the sympathetic neural
control of the heart would result in
A. increased frequency of action potentials from the
baroreceptors.
B. inhibition of vasomotor tone.
C. a decrease in arterial blood pressure, followed shortly
by a reflex rise in blood pressure.
D. a slower heart rate.
E. a decrease, then a reflex rise in the total peripheral
resistance.

Answer 5

C. a decrease in arterial blood pressure, followed

shortly by a reflex rise in blood pressure.

Question 6

The large vessels that return blood to the
heart are called
A.	arteries.
B.	arterioles.
C.	capillaries.
D.	venules.
E.	veins.

Answer 6

E. veins.

Question 7

Pulmonary veins carry blood to the
A.	right atrium.
B.	left atrium.
C.	lungs.
D.	aorta.
E.	systemic circuit.

Answer 7

B. left atrium.

Question 8

Paul falls on an axe and cuts several major blood
vessels in his leg. As a result of this injury, you
would expect to observe all of the following,
except a(an)
A. increased heart rate.
B. increase in blood pressure.
C. increased secretion of renin by the kidneys.
D. decreased secretion of atrial natriuretic hormone.
E. increased total peripheral resistance.

Answer 8

B. increase in blood pressure.

Question 9

The radial and ulnar veins fuse to form the
\_\_\_\_\_ vein.
A.	azygos
B.	hemiazygos
C.	axillary
D.	brachial
E.	basilic

Answer 9

D. brachial

Question 10

In arteries, the thick layer of elastic fibers
is called the
A.	tunica intima.
B.	external elastic lamina.
C.	tunica media.
D.	internal elastic lamina.
E.	tunica externa.

Answer 10

D. internal elastic lamina.

Question 11

Each of the following arteries carries
blood to the heart, except the
A.	right coronary artery.
B.	left circumflex artery.
C.	common carotid artery.
D.	marginal artery.
E.	left descending artery.

Answer 11

C. common carotid artery.

Question 12

The body has several hundred arterioles
that provide blood to more than 20 million
capillaries.
A.	True
B.	False

Answer 12

B. False

Question 13

The walls of veins are thicker than those
of arteries.
A. True
B. False

Answer 13

B. False

Question 14

Most arterioles vasoconstrict under
sympathetic stimulation.
A. True
B. False

Answer 14

A. True

Question 15

At the level of the first rib, the axillary
vein becomes the \_\_\_\_\_ vein.
A.	cephalic
B.	azygos
C.	subclavian
D.	innominate
E.	external jugular

Answer 15

C. subclavian

Question 16

An important artery that supplies blood to
the brain is the \_\_\_\_\_ artery.
A.	external carotid
B.	subclavian
C.	vertebral
D.	azygos
E.	maxillary

Answer 16

C. vertebral

Question 17

Capillaries are the blood vessels whose
walls generally permit exchange between
the blood and interstitial fluids.
A.	True
B.	False

Answer 17

A. True

Question 18

Blood pressure in veins is lower than that
in arteries.
A. True
B. False

Answer 18

A. True