Question 1

When contrasting arteries and veins, which of the following statements is true?

Accepted Answer

A)   Veins have thicker walls than arteries.
B)   Arteries have a thicker tunica media than veins.
C)   Veins have a tunica media, while arteries do not.
D)   Arteries have valves, but veins do not.
E)   Arteries have smooth muscle in their walls, but veins do not.F) C) and D)
G) A) and E)

Question 2

Match the term with the best description.
-Venules

Accepted Answer

A)  Simple squamous epithelium of capillaries
B)  Drain capillary networks
C)  Regulate blood flow into capillaries
D)  Do not have fenestrae
E)  Bypass capillary bedsF) All of the above
G) A) and E)

Question 3

The central nervous system ischemic response

Accepted Answer

A)   is triggered by an increase in blood flow to the vasomotor center.
B)   plays an important role in controlling blood pressure under emergency conditions.
C)   is stimulated by a rise in O2.
D)   is inhibited by a rise in the level of H+.
E)   plays an important role in regulating blood pressure under normal conditions.F) B) and E)
G) B) and D)

Question 4

Most of the exchange of nutrients and waste products that occurs between the blood and interstitial spaces occurs across the walls of the ________.

Accepted Answer

The answer of Most of the exchange of nutrients and...

Question 5

Blood pressure is the

Accepted Answer

A)   product of the stroke volume times heart rate.
B)   number of layers of blood in laminar flow models.
C)   measure of force blood exerts against blood vessel walls.
D)   viscosity of the blood and resistance to blood flow.
E)   measure of the volume of the blood.F) B) and D)
G) C) and D)

Question 6

Resistance to blood flow is greatest in ________.

Accepted Answer

A)   arteries
B)   arterioles
C)   venules
D)   veins
E)   capillariesF) A) and B)
G) A) and C)

Question 7

Match the term with the appropriate description.
-Phlebitis

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) C) and E)
G) A) and C)

Question 8

Sympathetic nerve fibers that innervate blood vessel walls are found primarily in the ________.

Accepted Answer

A)   tunica intima
B)   tunica media
C)   tunica adventitia
D)   tunica externa
E)   tunica internaF) A) and E)
G) B) and E)

Question 9

Which of the following thoracic organs is supplied by a parietal branch of the thoracic aorta?

Accepted Answer

A)   Heart
B)   Lungs
C)   Esophagus
D)   Intercostal muscles
E)   Thymus glandF) A) and B)
G) A) and C)

Question 10

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

Accepted Answer

A)   Renin-angiotensin-aldosterone mechanism
B)   ADH mechanism
C)   Stress-relaxation response
D)   Oxygen tension responseE) None of the above
F) A) and B)

Question 11

Peripheral chemoreceptors

Accepted Answer

A)   are located in the aortic and carotid bodies.
B)   are sensitive to small changes in O2 levels in the blood.
C)   monitor blood pressure.
D)   are not sensitive to CO2 or H+ levels.
E)   are not sensitive to changes in pH of the blood.F) A) and C)
G) All of the above

Question 12

Match the term with the appropriate description.
-Stroke

Accepted Answer

A)  Dead tissue
B)  A floating clot
C)  Sudden decreased blood supply to a part of the brain
D)  A stationary clot
E)  A localized area of dead cells resulting from ischemiaF) B) and E)
G) B) and D)

Question 13

Use the following key to choose the most correct answer.
-(1)  Plasma volume when ADH levels increase
(2)  Plasma volume when ADH levels decrease

Accepted Answer

A)  The first item is greater than the second item.
B)  The first item is less than the second item.
C)  The first item is equal or nearly equal to the second item.D) All of the above
E) A) and B)

Question 14

The maintenance of blood flow by tissues is called ________.

Accepted Answer

The answer of The maintenance of blood flow by tissues...

Question 15

The chemoreceptor reflexes help maintain homeostasis

Accepted Answer

A)   under normal conditions.
B)   when CO2 levels increase.
C)   when stimulated by changes in blood osmotic pressure.
D)   when epinephrine levels increase.
E)   when H+ concentrations decrease.F) B) and D)
G) None of the above

Question 16

Match the term with the appropriate description.
-Varicose veins

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) C) and D)

Question 17

________ is a measure of the force exerted by blood against the blood vessel walls.

Accepted Answer

The answer of ________ is a measure of the force...

Question 18

As viscosity of the blood increases,

Accepted Answer

A)   the pressure required to force it to flow increases.
B)   the pressure required to force it to flow decreases.
C)   the fluid becomes thinner.
D)   the hematocrit decreases.
E)   the flow does not change.F) B) and E)
G) A) and B)

Question 19

The ________ begins with capillaries in the abdominal viscera and ends with capillaries in the liver.

Accepted Answer

A)   superior mesenteric system
B)   celiac system
C)   hepatic portal system
D)   hepatic vein
E)   splenic systemF) A) and E)
G) C) and D)

Question 20

A vein responsible for draining blood from the upper limb is the ________ vein.

Accepted Answer

A)   azygos
B)   portal
C)   cephalic
D)   peroneal
E)   common iliacF) None of the above
G) All of the above

Exam 21: Cardiovascular System: Blood Vessels and Circulation

Which of the following thoracic organs is supplied by a parietal branch of the thoracic aorta?

Correct AnswerverifiedShow Answer

Most of the exchange of nutrients and waste products that occurs between the blood and interstitial spaces occurs across the walls of the ________.

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Match the term with the appropriate description. -Stroke

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Match the term with the best description. -Venules

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Sympathetic nerve fibers that innervate blood vessel walls are found primarily in the ________.

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The chemoreceptor reflexes help maintain homeostasis

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Match the term with the appropriate description. -Phlebitis

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Match the term with the appropriate description. -Varicose veins

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Blood pressure is the

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________ is a measure of the force exerted by blood against the blood vessel walls.

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Use the following key to choose the most correct answer. -(1) Plasma volume when ADH levels increase (2) Plasma volume when ADH levels decrease

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

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The maintenance of blood flow by tissues is called ________.

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Resistance to blood flow is greatest in ________.

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The central nervous system ischemic response

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A vein responsible for draining blood from the upper limb is the ________ vein.

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Peripheral chemoreceptors

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The ________ begins with capillaries in the abdominal viscera and ends with capillaries in the liver.

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As viscosity of the blood increases,

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When contrasting arteries and veins, which of the following statements is true?

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