Question 1

Match the term with the best description.
-precapillary sphincters

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) A) and B)
G) None of the above

Question 2

Which of the following happens when a person stands in one place for a long period of time?

Accepted Answer

A)   Gravity causes an increased accumulation of blood in the veins in the feet and legs.
B)   Blood pressure rises in the venules of the feet.
C)   Without muscular movement the pressure at the venous end of the capillaries increases.
D)   Edema may occur in the lower extremities.
E)   All of these choices are correct.F) A) and E)
G) A) and B)

Question 3

-The figure illustrates the capillary network. What does "D" represent?

Accepted Answer

A)   precapillary sphincter
B)   metarteriole
C)   thoroughfare channel
D)   arterial capillaries
E)   venous capillariesF) B) and E)
G) A) and B)

Question 4

The azygos vein drains blood from the _____ into the superior vena cava.

Accepted Answer

A)   head
B)   upper arm
C)   kidneys
D)   thorax
E)   abdominal wallF) A) and E)
G) A) and D)

Question 5

When a person rises quickly from a lying position, there is

Accepted Answer

A)   an increase in the frequency of action potentials produced by the baroreceptors.
B)   an increase in vasomotor sympathetic stimulation to the blood vessels causing vasoconstriction.
C)   reflexive slowing of the heart.
D)   an increase of parasympathetic stimulation of the heart.
E)   a decrease in heart rate and stroke volume.F) A) and B)
G) A) and C)

Question 6

In a capillary bed, relaxation of the precapillary sphincter

Accepted Answer

A)   causes more blood flow through thoroughfare channels.
B)   causes less blood to flow through capillaries.
C)   occurs when the tissue in the area does not need more oxygen.
D)   is voluntary.
E)   occurs when the tissue in the area needs more oxygen.F) B) and D)
G) A) and E)

Question 7

-The diagram illustrates a part of a capillary. What does "A" represent?

Accepted Answer

A)   basement membrane
B)   RBC
C)   capillary endothelial cell
D)   nucleus of endothelial cell
E)   precapillary cellF) C) and E)
G) A) and B)

Question 8

Which of the following statements regarding regulation of local blood flow is true?

Accepted Answer

A)   Increased metabolic rate in a tissue increases capillary blood flow into the tissue.
B)   Blood flow through capillaries is continuous.
C)   Contraction of precapillary sphincters will increase blood flow to a capillary bed.
D)   Increased levels of carbon dioxide increase the contraction of precapillary sphincters.
E)   Tissue need for oxygen and amino acids will cause precapillary sphincters to contract.F) B) and D)
G) C) and D)

Question 9

-The figure illustrates the capillary network. What does "B" represent?

Accepted Answer

A)   precapillary sphincter
B)   metarteriole
C)   thoroughfare channel
D)   arterial capillaries
E)   venous capillariesF) B) and D)
G) B) and C)

Question 10

Arteriosclerosis is characterized by

Accepted Answer

A)   a thickening of the tunica adventitia.
B)   increased elasticity of the tunica media.
C)   decreased resistance to blood flow.
D)   an enlargement of the lumen of the vessel.
E)   thickening of the tunica intima and loss of elasticity in the tunica media.F) None of the above
G) A) and B)

Question 11

In response to circulatory shock,

Accepted Answer

A)   the body decreases ADH secretion.
B)   the renin-angiotensin mechanism is activated.
C)   atrial natriuretic factor is released.
D)   the vasomotor center is inhibited.
E)   the baroreceptors and chemoreceptors are inactivated.F) B) and D)
G) C) and E)

Question 12

Which of the following is NOT a vasodilator substance produced in the extracellular fluid?

Accepted Answer

A)   ATP
B)   lactic acid
C)   ADP
D)   carbon dioxideE) All of the above
F) C) and D)

Question 13

As the popliteal vein ascends the leg, it becomes the

Accepted Answer

A)   peroneal vein.
B)   saphenous vein.
C)   common iliac vein.
D)   femoral vein.
E)   deep femoral vein.F) A) and B)
G) C) and E)

Question 14

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) B) and D)
G) A) and C)

Question 15

Match the vessel with the appropriate description.
-subclavian vein

Accepted Answer

A)  drains blood from the arm
B)  superficial vein of the head and neck
C)  the posterior intercostals veins join this vein on the right side of the body
D)  deep vein that drains blood from the cranial vault
E)  formed by the union of the internal jugular and the subclavian veinsF) A) and E)
G) A) and C)

Question 16

Tracing the blood from the heart to the right hand, blood leaves the heart, passes through the ascending aorta, aortic arch, right subclavian artery, axillary and brachial arteries, either the radial or ulnar arteries and palmar arches to arrive at the hand. Which artery is missing in this sequence?

Accepted Answer

A)   cephalic
B)   jugular
C)   brachiocephalic
D)   right common carotid
E)   left subclavian arteryF) B) and E)
G) C) and D)

Question 17

-On this diagram label pulse point "A".

Accepted Answer

A)   femoral artery
B)   radial artery
C)   common carotid artery
D)   popliteal artery
E)   brachial arteryF) B) and E)
G) C) and E)

Question 18

Match the term with the best description.
-thoroughfare channels

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

Question 19

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

Accepted Answer

A)   the heart
B)   the lungs
C)   the esophagus
D)   the intercostal muscles
E)   the thymus glandF) C) and D)
G) B) and D)

Question 20

Compensatory shock is characterized by a narrowed pulse pressure. Which of the following blood pressure readings is an example of a narrowed pulse pressure?

Accepted Answer

A)   99/40
B)   70/20
C)   92/64
D)   82/40
E)   100/50F) None of the above
G) A) and E)

Exam 21: Cardiovascular System: Blood Vessels and Circulation

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

Correct AnswerverifiedShow Answer

When a person rises quickly from a lying position, there is

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As the popliteal vein ascends the leg, it becomes the

Correct AnswerverifiedShow Answer

In a capillary bed, relaxation of the precapillary sphincter

Correct AnswerverifiedShow Answer

Match the term with the best description. -thoroughfare channels

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

-The figure illustrates the capillary network. What does "D" represent?

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Which of the following happens when a person stands in one place for a long period of time?

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-On this diagram label pulse point "A".

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The azygos vein drains blood from the _____ into the superior vena cava.

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-The diagram illustrates a part of a capillary. What does "A" represent?

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Match the term with the best description. -precapillary sphincters

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

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Which of the following statements regarding regulation of local blood flow is true?

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In response to circulatory shock,

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Match the vessel with the appropriate description. -subclavian vein

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-The figure illustrates the capillary network. What does "B" represent?

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Compensatory shock is characterized by a narrowed pulse pressure. Which of the following blood pressure readings is an example of a narrowed pulse pressure?

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Which of the following is NOT a vasodilator substance produced in the extracellular fluid?

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Arteriosclerosis is characterized by

Correct AnswerverifiedShow Answer

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