Question 1

Which of the following is a consequence of sympathetic nerve stimulation?

Accepted Answer

A)  Increased myocardial force of contraction
B)  Peripheral vasoconstriction
C)  Increased systemic vascular resistance
D)  All of the aboveE) All of the above
F) None of the above

Question 2

Which of the following increases systemic vascular resistance,stroke volume,and heart rate?

Accepted Answer

A)  Stimulation of the vagus nerve
B)  Stimulation of the parasympathetic nervous system
C)  Administration of a sympatholytic drug
D)  Stimulation of the sympathetic nervous systemE) None of the above
F) C) and D) D

Question 3

Blood flow is slowest in the

Accepted Answer

A)  aorta.
B)  capillaries.
C)  venules.
D)  arterioles.E) B) and C)
F) None of the above

Question 4

Capillary pressure is a reflection of

Accepted Answer

A)  plasma proteins.
B)  albumin.
C)  lymph.
D)  blood pressure.E) A) and D)
F) B) and C)

Question 5

Which of the following is true? (CO is cardiac output,BP is blood pressure,SV is stroke volume,HR is heart rate,SVR is systemic vascular resistance. )

Accepted Answer

A)  CO = HR× SV× pulse pressure
B)  BP = CO× SV× SVR
C)  BP = SV× pulse pressure
D)  BP = SV× HR× SVRE) None of the above
F) B) and C)

Question 6

A tight collar might trigger the baroreceptor reflex because the

Accepted Answer

A)  carotid baroreceptors sense a change in the osmolarity of the blood flowing through the carotid arteries.
B)  carotid baroreceptors interpret the elevated carotid pressure as an elevation of blood pressure.
C)  tight collar occludes blood flow to the brain,causing cerebral artery spasms.
D)  tight collar impairs drainage of cerebral venous blood,causing cerebral edema.E) None of the above
F) A) and B)

Question 7

A sphygmomanometer measures

Accepted Answer

A)  blood flow.
B)  hematocrit.
C)  blood pressure.
D)  oxygen saturation.E) A) and D)
F) B) and C)

Question 8

What do the baroreceptors sense?

Accepted Answer

A)  Blood volume
B)  Hematocrit
C)  Blood pressure
D)  Rate of capillary filtrationE) A) and C)
F) C) and D) C

Question 9

An IV infusion of mannitol (a sugar solution)  is used to decrease intracranial pressure in a head-injured patient because the mannitol

Accepted Answer

A)  provides calories for the healing of the injured brain.
B)  is absorbed by the injured brain cells and pulls water into the brain cells from the tissue fluid.
C)  pulls water out of the interstitium of the brain into the capillaries,thereby relieving edema.
D)  "clumps" the plasma proteins together,thereby severely diminishing plasma oncotic pressure.E) B) and C)
F) B) and D)

Question 10

Which of the following is not true of an adult male who has a blood pressure of 116/72 mm Hg?

Accepted Answer

A)  It is a normotensive reading.
B)  The 116 mm Hg is the systolic reading.
C)  The 72 mm Hg is the diastolic reading.
D)  The pulse pressure is 100 mm Hg.E) None of the above
F) A) and B)

Question 11

While "taking" a blood pressure,you record the first Korotkoff sounds as the

Accepted Answer

A)  pulse pressure.
B)  mean arterial blood pressure.
C)  diastolic reading.
D)  systolic reading.E) A) and D)
F) A) and C)

Question 12

If the lymphatic vessels are blocked or surgically removed,

Accepted Answer

A)  excess fluid is filtered out of the capillary.
B)  plasma oncotic pressure decreases,thereby causing fluid to leak out of the capillary.
C)  fluid and protein accumulate in the interstitium,thereby causing edema.
D)  excess fluid moves into the capillary,thereby "drying out" the interstitium.E) A) and C)
F) A) and D) C

Question 13

Both epinephrine and norepinephrine are

Accepted Answer

A)  steroids.
B)  secreted by the adrenal medulla.
C)  vasodilators.
D)  blood pressure-lowering hormones.E) A) and D)
F) B) and C)

Question 14

Which artery is most often used to measure blood pressure?

Accepted Answer

A)  Carotid
B)  Brachial
C)  Femoral
D)  Circle of WillisE) A) and D)
F) A) and B)

Question 15

Why does blood flow from the arterial side of the circulation to the venous side of the circulation?

Accepted Answer

A)  Capillary pressure is higher than the pressure within the large arteries and veins.
B)  The oncotic pressure in the venous side of the circulation is greater than the oncotic pressure on the venous side of the circulation.
C)  The pressure on the arterial side of the circulation is higher than the pressure on the venous side of the circulation.
D)  Blood volume is greater on the arterial side of the circulation than on the venous side of the circulation.E) A) and D)
F) A) and B)

Question 16

What effects do ANP and BNP have?

Accepted Answer

A)  Stimulate vasodilation and decrease blood volume
B)  Stimulate vasoconstriction and increase blood volume
C)  Stimulate vasoconstriction and decrease blood volume
D)  Stimulate vasodilation and increase blood volumeE) B) and C)
F) All of the above

Question 17

The disappearance of Korotkoff sounds

Accepted Answer

A)  indicates that blood flow has been restored in the previously occluded blood vessel.
B)  is recorded as the diastolic reading.
C)  is indicative of a life-threatening hypotension.
D)  Both A and B are true.E) A) and D)
F) C) and D)

Question 18

Which of the following structures has the greatest effect on systemic vascular resistance?

Accepted Answer

A)  Veins
B)  Arterioles
C)  Heart
D)  CapillariesE) B) and D)
F) B) and C)

Question 19

Loss of speech,paralysis,and possible death can be caused by

Accepted Answer

A)  hypertension.
B)  rupture of a blood vessel in the brain.
C)  decreased oncotic pressure.
D)  edema.E) A) and D)
F) A) and C)

Question 20

What is the pulse pressure when a person's blood pressure is 120/80 mm Hg?

Accepted Answer

A)  120 mm Hg
B)  80 mm Hg
C)  40 mm Hg
D)  Can't determine the pulse pressure from this informationE) None of the above
F) All of the above

Exam 19: Functions of the Blood Vessels

Which of the following is a consequence of sympathetic nerve stimulation?

Correct AnswerverifiedShow Answer

Which of the following increases systemic vascular resistance,stroke volume,and heart rate?

Correct AnswerverifiedD

Blood flow is slowest in the

Correct AnswerverifiedShow Answer

Capillary pressure is a reflection of

Correct AnswerverifiedShow Answer

Which of the following is true? (CO is cardiac output,BP is blood pressure,SV is stroke volume,HR is heart rate,SVR is systemic vascular resistance. )

Correct AnswerverifiedShow Answer

A tight collar might trigger the baroreceptor reflex because the

Correct AnswerverifiedShow Answer

A sphygmomanometer measures

Correct AnswerverifiedShow Answer

What do the baroreceptors sense?

Correct AnswerverifiedC

An IV infusion of mannitol (a sugar solution) is used to decrease intracranial pressure in a head-injured patient because the mannitol

Correct AnswerverifiedShow Answer

Which of the following is not true of an adult male who has a blood pressure of 116/72 mm Hg?

Correct AnswerverifiedShow Answer

While "taking" a blood pressure,you record the first Korotkoff sounds as the

Correct AnswerverifiedShow Answer

If the lymphatic vessels are blocked or surgically removed,

Correct AnswerverifiedC

Both epinephrine and norepinephrine are

Correct AnswerverifiedShow Answer

Which artery is most often used to measure blood pressure?

Correct AnswerverifiedShow Answer

Why does blood flow from the arterial side of the circulation to the venous side of the circulation?

Correct AnswerverifiedShow Answer

What effects do ANP and BNP have?

Correct AnswerverifiedShow Answer

The disappearance of Korotkoff sounds

Correct AnswerverifiedShow Answer

Which of the following structures has the greatest effect on systemic vascular resistance?

Correct AnswerverifiedShow Answer

Loss of speech,paralysis,and possible death can be caused by

Correct AnswerverifiedShow Answer

What is the pulse pressure when a person's blood pressure is 120/80 mm Hg?

Correct AnswerverifiedShow Answer

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C

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C

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