Question 1

The pulse wave is associated with left ventricular diastole.

Accepted Answer

A) True 
 B)False

Question 2

List two factors that affect peripheral resistance. Explain how these factors influence arterial blood pressure. In normal blood flow, where is the major peripheral resistance encountered?

Accepted Answer

Two factors that affect peripheral resis...

Question 3

What are two functions that circulation control mechanisms must accomplish?

Accepted Answer

Circulation control mechanisms within th...

Question 4

List two major factors that promote the return of venous blood to the heart. Explain how each facilitates venous return.

Accepted Answer

Two major factors that promote the retur...

Question 5

Because of their small diameter, capillaries account for almost all the resistance to blood flow in the circulatory system.

Accepted Answer

A) True 
 B)False

Question 6

The atrial natriuretic hormone mechanism promotes water retention, thus increasing total plasma volume.

Accepted Answer

A) True 
 B)False

Question 7

Two important baroreceptors are located in the aorta and the carotid artery.

Accepted Answer

A) True 
 B)False

Question 8

Nicole records her resting heart rate at sea level. She then climbs a mountain. After reaching 18,000 feet, she stops and records her resting heart rate again. Predict what change, if any, would be observed, and then explain the mechanisms involved.

Accepted Answer

The change in resting heart rate that Ni...

Question 9

Which of the following statements is true regarding local control of arterioles?

Accepted Answer

A)   Local vasodilation is also referred to as active hyperemia.
B)   Nitric oxide causes vasoconstriction.
C)   Endothelin causes vasodilation.
D)   All of the above statements are true regarding local control of arterioles.E) A) and B)
F) A) and C)

Question 10

The blood-pumping action of respirations and skeletal muscle contractions are both important factors promoting the return of venous blood to the heart.

Accepted Answer

A) True 
 B)False

Question 11

The greatest resistance to blood flow occurs in the:

Accepted Answer

A)   arteries.
B)   arterioles.
C)   venules.
D)   capillaries.E) C) and D)
F) All of the above

Question 12

Which of the following blood vessels has the largest total cross-sectional area?

Accepted Answer

A)   Capillary
B)   Aorta
C)   Vena cava
D)   ArterioleE) A) and C)
F) B) and C)

Question 13

The blood in the subclavian vein of the chest had a P1 of 15 mm Hg. For the blood to flow back to the heart, the P2 in the superior vena cava:

Accepted Answer

A)   would have to be greater than 25.
B)   would have to be between 15 and 25.
C)   would have to be less than 15.
D)   could be at any value.E) A) and B)
F) C) and D)

Question 14

Which artery in the arm is used for measuring blood pressure?

Accepted Answer

A)   Brachial
B)   Radial
C)   Ulnar
D)   AxillaryE) B) and D)
F) None of the above

Question 15

Blood vessels can hold much more blood than is present in the body.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following factors increases heart rate?

Accepted Answer

A)   Sudden, intense pain of visceral organs such as the intestines and the gallbladder
B)   Stimulation of skin receptors by cold
C)   Anxiety and fear
D)   GriefE) A) and C)
F) B) and D)

Question 17

Explain how a drop in blood protein can cause edema (the collection of fluid) in the tissues.

Accepted Answer

When there is a drop in blood protein le...

Question 18

Which of the following events would tend to cause a decrease in blood viscosity?

Accepted Answer

A)   An increase in red blood cell count
B)   Marked anemia
C)   An increase in blood protein concentration
D)   Both A and CE) All of the above
F) A) and B)

Question 19

Blood in the veins of which organ is not considered part of the "blood reservoir" system?

Accepted Answer

A)   Skin
B)   Skeletal muscle
C)   Spleen
D)   LiverE) B) and C)
F) None of the above

Question 20

Because of the high concentration of protein in plasma, a decrease in the red blood cell count will cause an increase in blood viscosity.

Accepted Answer

A) True 
 B)False

Exam 30: Circulation of the Blood

The pulse wave is associated with left ventricular diastole.

Correct AnswerverifiedShow Answer

Blood vessels can hold much more blood than is present in the body.

Correct AnswerverifiedShow Answer

Because of their small diameter, capillaries account for almost all the resistance to blood flow in the circulatory system.

Correct AnswerverifiedShow Answer

Blood in the veins of which organ is not considered part of the "blood reservoir" system?

Correct AnswerverifiedShow Answer

Which of the following events would tend to cause a decrease in blood viscosity?

Correct AnswerverifiedShow Answer

The blood-pumping action of respirations and skeletal muscle contractions are both important factors promoting the return of venous blood to the heart.

Correct AnswerverifiedShow Answer

The blood in the subclavian vein of the chest had a P1 of 15 mm Hg. For the blood to flow back to the heart, the P2 in the superior vena cava:

Correct AnswerverifiedShow Answer

Because of the high concentration of protein in plasma, a decrease in the red blood cell count will cause an increase in blood viscosity.

Correct AnswerverifiedShow Answer

List two major factors that promote the return of venous blood to the heart. Explain how each facilitates venous return.

Correct AnswerAnswered by ExamLex AITwo major factors that promote the retur...View AnswerShow Answer

Two important baroreceptors are located in the aorta and the carotid artery.

Correct AnswerverifiedShow Answer

Which of the following factors increases heart rate?

Correct AnswerverifiedShow Answer

Which of the following blood vessels has the largest total cross-sectional area?

Correct AnswerverifiedShow Answer

The atrial natriuretic hormone mechanism promotes water retention, thus increasing total plasma volume.

Correct AnswerverifiedShow Answer

Explain how a drop in blood protein can cause edema (the collection of fluid) in the tissues.

Correct AnswerAnswered by ExamLex AIWhen there is a drop in blood protein le...View AnswerShow Answer

The greatest resistance to blood flow occurs in the:

Correct AnswerverifiedShow Answer

Nicole records her resting heart rate at sea level. She then climbs a mountain. After reaching 18,000 feet, she stops and records her resting heart rate again. Predict what change, if any, would be observed, and then explain the mechanisms involved.

Correct AnswerAnswered by ExamLex AIThe change in resting heart rate that Ni...View AnswerShow Answer

Which of the following statements is true regarding local control of arterioles?

Correct AnswerverifiedShow Answer

What are two functions that circulation control mechanisms must accomplish?

Correct AnswerAnswered by ExamLex AICirculation control mechanisms within th...View AnswerShow Answer

Which artery in the arm is used for measuring blood pressure?

Correct AnswerverifiedShow Answer

List two factors that affect peripheral resistance. Explain how these factors influence arterial blood pressure. In normal blood flow, where is the major peripheral resistance encountered?

Correct AnswerAnswered by ExamLex AITwo factors that affect peripheral resis...View AnswerShow Answer

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Two major factors that promote the retur...
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When there is a drop in blood protein le...
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The change in resting heart rate that Ni...
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Circulation control mechanisms within th...
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Two factors that affect peripheral resis...
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