Question 1

Mechanisms that do not help regulate blood pressure include ________.

Accepted Answer

A)   nervous control that operates via reflex arcs involving baroreceptors, chemoreceptors, and higher brain centers
B)   chemical controls such as atrial natriuretic peptide
C)   the dural sinus reflex
D)   renal regulation via the renin-angiotensin system of vasoconstrictionE) A) and B)
F) C) and D)

Question 2

The adjustment of blood flow to each tissue in proportion to its requirements at any point in time is termed autoregulation.

Accepted Answer

A) True 
 B)False

Question 3

Which of the choices below does not explain why low capillary pressures are desirable?

Accepted Answer

A)   Low blood pressure is associated with longer life span than high blood pressure.
B)   Low capillary pressure reduces the load of drainage the lymphatic drainage must handle.
C)   Capillaries are fragile and high pressures would rupture them.
D)   Most capillaries are extremely permeable and thus even low pressures force solute-containing fluid out of the bloodstream.E) None of the above
F) A) and B)

Question 4

Match the following:
-Common site to take the pulse.

Accepted Answer

A)  External iliac artery
B)  Internal carotid artery
C)  Brachiocephalic trunk
D)  Celiac trunk
E)  Radial arteryF) None of the above
G) A) and C)

Question 5

Match the following:
-Normal blood volume but poor circulation due to extreme vasodilation.

Accepted Answer

A)  Circulatory shock
B)  Cardiogenic shock
C)  Hypovolemic shock
D)  Vascular shockE) C) and D)
F) A) and B)

Question 6

Match the following:
-Large unpaired branch of the abdominal aorta that supplies the liver,stomach,and spleen.

Accepted Answer

A)  External iliac artery
B)  Internal carotid artery
C)  Brachiocephalic trunk
D)  Celiac trunk
E)  Radial arteryF) None of the above
G) A) and C)

Question 7

If a person were to have substantial blood loss you would expect to see all of the following physiological events to except one.Select the least likely response to substantial blood loss.

Accepted Answer

A)   increasing vasomotor tone
B)   decreased heart rate
C)   increases peripheral resistance
D)   a weak, thread pulseE) A) and B)
F) A) and C)

Question 8

Where in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?

Accepted Answer

A)   heart
B)   kidney
C)   lungs
D)   liverE) A) and B)
F) C) and D)

Question 9

Select the correct statement about factors that influence blood pressure.

Accepted Answer

A)   Excess albumen transport protein production would decrease blood pressure.
B)   Excess red cell production would cause a blood pressure increase.
C)   An increase in cardiac output corresponds to a decrease in blood pressure, due to the increased delivery.
D)   Systemic vasodilation would increase blood pressure, due to diversion of blood to essential areas.E) A) and B)
F) A) and C)

Question 10

Arterial pressure in the pulmonary circulation is much higher than in the systemic circulation because of its proximity to the heart.

Accepted Answer

A) True 
 B)False

Question 11

Match the following:
-Receives blood from all areas superior to the diaphragm,except the heart wall.

Accepted Answer

A)  External jugular vein
B)  Pulmonary trunk
C)  Superior vena cava
D)  Subclavian vein
E)  Axillary arteryF) B) and C)
G) C) and D)

Question 12

If a person has lost a significant amount of blood but still maintains a normal blood pressure it does not necessarily mean that the person is maintaining adequate perfusion.Which of the following best explains why this is so?

Accepted Answer

A)   The heart has increased its rate to increase cardiac output.
B)   Blood vessels are constricting causing greater peripheral resistance.
C)   The heart has increased its contractile force increasing cardiac output.
D)   The sympathetic nervous system has increased its nervous impulses.E) B) and D)
F) A) and B)

Question 13

Histologically,the ________ is squamous epithelium supported by a sparse connective tissue layer.

Accepted Answer

A)   tunica externa
B)   tunica adventitia
C)   tunica intima
D)   tunica mediaE) A) and B)
F) A) and C)

Question 14

The cerebral arterial circle (circle of Willis)is an arterial anastomosis.

Accepted Answer

A) True 
 B)False

Question 15

Match the following:
-Artery usually ausculated to take the blood pressure.

Accepted Answer

A)  Superior mesenteric artery
B)  Brachial artery
C)  Pulmonary vein
D)  Femoral artery
E)  Great saphenous veinF) A) and B)
G) A) and C)

Question 16

The carotid sinus reflex protects the blood supply to the brain,whereas the aortic reflex is more concerned with maintaining adequate blood pressure in the systemic circuit as a whole.

Accepted Answer

A) True 
 B)False

Question 17

The abdominal aorta divides into three arteries at its terminus; what are they?

Accepted Answer

Left and right commo...

Question 18

Which of the following statements is not true of the precapillary sphincters?

Accepted Answer

A)   They decrease the osmotic pressure in the thoroughfare channel.
B)   They increase or decrease rates of perfusion to the tissues served by the true capillaries.
C)   They allow blood to bypass the true capillaries that are fed by the metarteriole.
D)   They regulate the flow of blood to tissues served by the true capillaries.E) A) and C)
F) All of the above

Question 19

Which of the choices below explains why the arterioles are known as resistance vessels?

Accepted Answer

A)   The contraction and relaxation of the smooth muscle in their walls can change their diameter.
B)   They contain a large quantity of elastic tissue.
C)   They distribute blood to various parts of the body.
D)   Their prime function is the exchange of nutrients and wastes between the blood and tissue cells.E) B) and D)
F) A) and C)

Question 20

Figure 19.2
Using Figure 19.2, match the following:
-Superior mesenteric vein.

Accepted Answer

A)  E
B)  B
C)  D
D)  C
E)  AF) B) and C)
G) A) and D)

Exam 19: The Cardiovascular System: Blood Vessels

Match the following: -Normal blood volume but poor circulation due to extreme vasodilation.

Correct AnswerverifiedShow Answer

Where in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?

Correct AnswerverifiedShow Answer

Match the following: -Large unpaired branch of the abdominal aorta that supplies the liver,stomach,and spleen.

Correct AnswerverifiedShow Answer

Arterial pressure in the pulmonary circulation is much higher than in the systemic circulation because of its proximity to the heart.

Correct AnswerverifiedShow Answer

The abdominal aorta divides into three arteries at its terminus; what are they?

Correct AnswerverifiedLeft and right commo...View AnswerShow Answer

If a person were to have substantial blood loss you would expect to see all of the following physiological events to except one.Select the least likely response to substantial blood loss.

Correct AnswerverifiedShow Answer

Match the following: -Artery usually ausculated to take the blood pressure.

Correct AnswerverifiedShow Answer

Histologically,the ________ is squamous epithelium supported by a sparse connective tissue layer.

Correct AnswerverifiedShow Answer

Mechanisms that do not help regulate blood pressure include ________.

Correct AnswerverifiedShow Answer

Which of the choices below explains why the arterioles are known as resistance vessels?

Correct AnswerverifiedShow Answer

The carotid sinus reflex protects the blood supply to the brain,whereas the aortic reflex is more concerned with maintaining adequate blood pressure in the systemic circuit as a whole.

Correct AnswerverifiedShow Answer

If a person has lost a significant amount of blood but still maintains a normal blood pressure it does not necessarily mean that the person is maintaining adequate perfusion.Which of the following best explains why this is so?

Correct AnswerverifiedShow Answer

Figure 19.2 Using Figure 19.2, match the following: -Superior mesenteric vein.

Correct AnswerverifiedShow Answer

The cerebral arterial circle (circle of Willis)is an arterial anastomosis.

Correct AnswerverifiedShow Answer

Which of the following statements is not true of the precapillary sphincters?

Correct AnswerverifiedShow Answer

Match the following: -Common site to take the pulse.

Correct AnswerverifiedShow Answer

Match the following: -Receives blood from all areas superior to the diaphragm,except the heart wall.

Correct AnswerverifiedShow Answer

The adjustment of blood flow to each tissue in proportion to its requirements at any point in time is termed autoregulation.

Correct AnswerverifiedShow Answer

Select the correct statement about factors that influence blood pressure.

Correct AnswerverifiedShow Answer

Which of the choices below does not explain why low capillary pressures are desirable?

Correct AnswerverifiedShow Answer

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Left and right commo...
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