Question 1

What is the most important means by which capillary exchange occurs?

Accepted Answer

A)  exocytosis
B)  diffusion
C)  ATP powered pumps
D)  facilitated diffusionE) A) and B)
F) A) and C)

Question 2

Match the term with the best description.
-continuous capillaries

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

Question 3

Explain the drop in blood pressure that occurs when one goes from lying down to standing up.

Accepted Answer

A)   The heart rate decreases.This is due to the baroreceptor reflex reducing sympathetic output to the SA node.
B)   An increase in afterload causes a drop in stroke volume,cardiac output,and blood pressure.
C)   An increase in preload causes a drop in stroke volume,cardiac output,and blood pressure.
D)   Venous compliance allows blood to pool in the legs,decreasing venous return.This causes a drop in cardiac output and blood pressure.E) All of the above
F) C) and D)

Question 4

Match the vessel with the appropriate description.
-superior phrenic artery

Accepted Answer

A)  supplies blood to the diaphragm
B)  supplies blood to the esophagus
C)  supplies blood to the thoracic wall
D)  supplies blood to the pancreas and small intestine
E)  supplies blood to the stomach,liver,and spleenF) A) and E)
G) None of the above

Question 5

Which type of capillary has the largest diameter?

Accepted Answer

A)  sinusoids
B)  continuous capillaries
C)  sinusoidal capillaries
D)  venous sinuses
E)  fenestrated capillariesF) B) and E)
G) C) and D)

Question 6

Which of the following arteries is not part of the cerebral arterial circle (circle of Willis) ?

Accepted Answer

A)  anterior communicating artery
B)  posterior cerebellar artery
C)  posterior communicating artery
D)  anterior cerebral artery
E)  internal carotid arteryF) A) and C)
G) B) and E)

Question 7

Which of the following arteries branches directly from the aortic arch?

Accepted Answer

A)  brachiocephalic artery
B)  coronary artery
C)  pulmonary artery
D)  right subclavian artery
E)  right common carotid arteryF) B) and C)
G) A) and E)

Question 8

The venous sinuses in the cranial cavity drain blood into the

Accepted Answer

A)  cephalic vein.
B)  internal jugular vein.
C)  internal carotid vein.
D)  brachiocephalic vein.
E)  carotid artery.F) B) and C)
G) All of the above

Question 9

Match the vessel with the appropriate description.
-internal jugular 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) C) and E)
G) None of the above

Question 10

Resistance to blood flow is greatest in

Accepted Answer

A)  arteries.
B)  arterioles.
C)  venules.
D)  veins.
E)  capillaries.F) A) and B)
G) C) and E)

Question 11

What is the order of the blood vessels that a red blood cell would pass through as the blood leaves the heart,travels to a tissue,and then returns to the heart?

Accepted Answer

A)  arteriole,artery,capillary,vein,venule
B)  capillary,arteriole,artery,vein,venule
C)  artery,arteriole,capillary,venule,vein
D)  vein,capillary,artery,arteriole,venule
E)  artery,venule,capillary,arteriole,veinF) A) and E)
G) B) and D)

Question 12

If a person develops high blood pressure,one of the compensatory mechanisms that comes into play is the fluid shift mechanism.This mechanism causes

Accepted Answer

A)  water to shift from inside cells into the extracellular fluid.
B)  water to shift from the capillaries into the interstitial spaces.
C)  water to shift from the interstitial space into the capillaries.
D)  increased filtration in the kidney,thereby increasing urine output.
E)  water to stay inside the capillaries.F) C) and D)
G) B) and E)

Question 13

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

Question 14

In the aorta,

Accepted Answer

A)  the blood pressure and blood velocity are both high.
B)  the velocity of blood flow is high,but blood pressure is low.
C)  the resistance to blood flow is high,but velocity of blood flow is low.
D)  the resistance to blood flow and the blood pressure are both low.
E)  velocity is diminished because the total cross-sectional area is small.F) A) and D)
G) B) and E)

Question 15

Angiotensin II

Accepted Answer

A)  causes vasoconstriction.
B)  stimulates the adrenal cortex to release ADH.
C)  is released in response to high blood pressure.
D)  is responsible for increasing urine output.
E)  stimulates peripheral vasodilation.F) A) and B)
G) None of the above

Question 16

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) A) and B)

Question 17

Which of the following would occur as a result of increased renin release by the kidneys?

Accepted Answer

A)  an increase in vasodilator secretion
B)  an increase in urine output
C)  an increase in blood volume
D)  a decrease in aldosterone
E)  a decrease in blood pressureF) None of the above
G) A) and E)

Question 18

Describe the critical closing pressure.

Accepted Answer

A)   The pressure needed to cause Korotkoff sounds.
B)   The pressure exerted on the aorta during the cardiac cycle.
C)   The pressure found in large veins of the leg.
D)   The pressure below which a vessel collapses.E) B) and C)
F) B) and D)

Question 19

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

Question 20

Veins that return blood directly to the heart include the

Accepted Answer

A)  brachiocephalic vein.
B)  superior vena cava.
C)  portal vein.
D)  azygos vein.
E)  pulmonary arteries.F) C) and D)
G) A) and B)

Exam 21: Cardiovascular System: Blood Vessels and Circulation

Which of the following arteries is not part of the cerebral arterial circle (circle of Willis) ?

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What is the order of the blood vessels that a red blood cell would pass through as the blood leaves the heart,travels to a tissue,and then returns to the heart?

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Match the term with the best description. -continuous capillaries

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Angiotensin II

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Which type of capillary has the largest diameter?

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Explain the drop in blood pressure that occurs when one goes from lying down to standing up.

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

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Match the vessel with the appropriate description. -internal jugular vein

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The venous sinuses in the cranial cavity drain blood into the

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Which of the following arteries branches directly from the aortic arch?

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Veins that return blood directly to the heart include the

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Resistance to blood flow is greatest in

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What is the most important means by which capillary exchange occurs?

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Match the vessel with the appropriate description. -superior phrenic artery

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Match the term with the best description. -precapillary sphincters

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If a person develops high blood pressure,one of the compensatory mechanisms that comes into play is the fluid shift mechanism.This mechanism causes

Correct AnswerverifiedShow Answer

In the aorta,

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Describe the critical closing pressure.

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

Correct AnswerverifiedShow Answer

Which of the following would occur as a result of increased renin release by the kidneys?

Correct AnswerverifiedShow Answer

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