Question 1

Which of the following might result from ischemia?

Accepted Answer

A)  Tissue damage
B)  Pain
C)  Gangrene
D)  All of the above

Question 2

Blood pressure is lowest in the

Accepted Answer

A)  inferior vena cava.
B)  aorta.
C)  circle of Willis.
D)  femoral artery.

Question 3

In which direction does blood flow shift in response to exercise?

Accepted Answer

A)  Increased blood flow to kidneys and digestive tract
B)  Increased blood flow to skin and skeletal muscles
C)  Increased blood flow to abdominal organs and kidneys
D)  Decreased blood flow to the heart and skeletal muscles

Question 4

If plasma oncotic pressure exceeds capillary pressure,

Accepted Answer

A)  more fluid is filtered from the capillary into the interstitium.
B)  more fluid moves into the capillary from the interstitium.
C)  plasma proteins diffuse from the capillary into the interstitium.
D)  blood volume decreases.

Question 5

A pregnant woman notices that her ankles are swollen after standing for 6 hours at her place of employment.In the evening,when she elevates her feet,the swelling diminishes because

Accepted Answer

A)  capillary pressure in the blood vessels of the lower extremities decreases.
B)  plasma oncotic pressure decreases.
C)  plasma oncotic pressure increases.
D)  lymphatic drainage decreases.

Question 6

An intense vagal discharge is most apt to cause

Accepted Answer

A)  tachycardia.
B)  decreased heart rate.
C)  deep vein thrombosis.
D)  white coat hypertension.

Question 7

The characteristic of the arteriole that allows it to function as a resistance vessel is its

Accepted Answer

A)  thin membrane.
B)  porous membrane.
C)  valves.
D)  smooth muscle.

Question 8

Which of the following is most responsible for the plasma oncotic pressure?

Accepted Answer

A)  Albumin
B)  Cl-
C)  Na+
D)  HCO₃-

Question 9

A patient has a heart rate of 128 beats/min,a blood pressure of 90/60 mm Hg,and an ejection fraction of 35%.The pulse pressure is

Accepted Answer

A)  65%.
B)  30 mm Hg.
C)  150 mm Hg.
D)  unknown from the data.

Question 10

Which of the following exerts a vasopressor effect?

Accepted Answer

A)  BNP
B)  ADH
C)  ANP
D)  Both A and C

Question 11

Systemic vascular resistance decreases when the

Accepted Answer

A)  blood viscosity increases.
B)  stroke volume increases.
C)  arterioles dilate.
D)  arterioles respond to sympathetic nerve stimulation.

Question 12

In the dehydrated state,

Accepted Answer

A)  capillary oncotic pressure decreases and fluid accumulates in the tissue spaces.
B)  capillary filtration pressure decreases and tissue fluid is pulled back into blood vessels.
C)  capillary filtration rate increases,thereby increasing lymph formation.
D)  plasma protein is filtered into the tissue spaces,causing edema.

Question 13

If digital (finger press)  pressure is exerted over the carotid sinus,you would expect

Accepted Answer

A)  the sympathetics to fire,thereby increasing blood pressure.
B)  that the medulla oblongata will interpret the signal as high blood pressure and therefore fire the vagus nerve.
C)  no effect,because the baroreceptors are "crushed."
D)  reflex tachycardia.

Question 14

What is the term that refers to the difference between the systolic and diastolic blood pressure readings?

Accepted Answer

A)  Pulse deficit
B)  Cardiac output
C)  Stroke volume
D)  Pulse pressure

Question 15

Which part of the brain participates in the baroreceptor reflex?

Accepted Answer

A)  Cerebrum
B)  Corpus callosum
C)  Cerebellum
D)  Medulla oblongata

Question 16

If capillary pressure exceeds plasma oncotic pressure,

Accepted Answer

A)  more fluid enters the capillary from the interstitial
B)  no net flux of fluid occurs.
C)  blood volume expansion occurs.
D)  more fluid leaves the capillaries to enter the interstitium

Question 17

A patient has hemorrhaged 1 liter of blood; he is diaphoretic (profuse perspiration) ,oliguric (decreased urinary output) ,and tachycardic.Physiologically,what is happening?

Accepted Answer

A)  The patient has lost so much plasma protein (albumin)  that fluid has shifted into his tissue spaces.
B)  In response to the blood loss and declining blood pressure,the baroreceptor reflex has kicked in,causing a sympathetic discharge.
C)  The shock-induced low blood pressure has caused a vagal discharge.
D)  The shock-induced hypotension has inactivated all autonomic receptors.

Question 18

Which of the following is a true statement regarding baroreceptors?

Accepted Answer

A)  Baroreceptor activation is a response to pedal edema.
B)  Baroreceptors are located in the carotid sinus and aortic arch.
C)  Baroreceptors are activated only in response to a sudden decline in blood pressure.
D)  All of the above are true.

Question 19

Which of the following is true of vasoconstriction?

Accepted Answer

A)  Caused by parasympathetic nerve stimulation
B)  Increases SVR
C)  Caused by vagal discharge
D)  Generally accompanied by arteriolar dilation

Question 20

Which of the following refers to an insufficient blood supply to an organ or body part?

Accepted Answer

A)  Pallor
B)  Ischemia
C)  Paresthesia
D)  Paresis

Exam 19: Functions of the Blood Vessels

The characteristic of the arteriole that allows it to function as a resistance vessel is its

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Systemic vascular resistance decreases when the

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In the dehydrated state,

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Which of the following might result from ischemia?

Correct AnswerverifiedShow Answer

If capillary pressure exceeds plasma oncotic pressure,

Correct AnswerverifiedShow Answer

What is the term that refers to the difference between the systolic and diastolic blood pressure readings?

Correct AnswerverifiedShow Answer

If plasma oncotic pressure exceeds capillary pressure,

Correct AnswerverifiedShow Answer

Which of the following refers to an insufficient blood supply to an organ or body part?

Correct AnswerverifiedShow Answer

Blood pressure is lowest in the

Correct AnswerverifiedShow Answer

Which of the following is a true statement regarding baroreceptors?

Correct AnswerverifiedShow Answer

An intense vagal discharge is most apt to cause

Correct AnswerverifiedShow Answer

A patient has a heart rate of 128 beats/min,a blood pressure of 90/60 mm Hg,and an ejection fraction of 35%.The pulse pressure is

Correct AnswerverifiedShow Answer

Which of the following exerts a vasopressor effect?

Correct AnswerverifiedShow Answer

Which part of the brain participates in the baroreceptor reflex?

Correct AnswerverifiedShow Answer

In which direction does blood flow shift in response to exercise?

Correct AnswerverifiedShow Answer

Which of the following is most responsible for the plasma oncotic pressure?

Correct AnswerverifiedShow Answer

Which of the following is true of vasoconstriction?

Correct AnswerverifiedShow Answer

A pregnant woman notices that her ankles are swollen after standing for 6 hours at her place of employment.In the evening,when she elevates her feet,the swelling diminishes because

Correct AnswerverifiedShow Answer

If digital (finger press) pressure is exerted over the carotid sinus,you would expect

Correct AnswerverifiedShow Answer

A patient has hemorrhaged 1 liter of blood; he is diaphoretic (profuse perspiration) ,oliguric (decreased urinary output) ,and tachycardic.Physiologically,what is happening?

Correct AnswerverifiedShow Answer

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