Question 1

Assume that the heart is beating at 70 beats per minute. What is the approximate length of the cardiac cycle?

Accepted Answer

A)   0.80 sec
B)   0.92 sec
C)   0.86 sec
D)   0.75 sec

Question 2

Venous pressure _.

Accepted Answer

A)   is not affected by external factors such as muscle activity
B)   is much lower than arterial pressure
C)   is usually the same in veins as in their corresponding arteries
D)   may be measured directly with a sphygmomanometer and pressure cuff

Question 3

Is it possible to determine blood pressure from a cardiac cycle graph? Why or why not?

Accepted Answer

A)   No, blood pressure must be measured using a pressure cuff and stethoscope.
B)   Yes, both systolic and diastolic pressures can be read.
C)   Yes, but only systolic pressure can be read.
D)   Yes, but only diastolic pressure can be read.

Question 4

How is the degree of oxygenation of the blood related to skin color?

Accepted Answer

A)   when the blood is oxygen-rich, skin will be pink or red
B)   when the blood is oxygen-poor, skin will be pink or red
C)   when the blood is oxygen-rich, skin will be pale or white

Question 5

The mean arterial pressure for a patient whose blood pressure is 110/80 is _ _.

Accepted Answer

A)   80 mm Hg
B)   90 mm Hg
C)   30 mm Hg
D)   95 mm Hg

Question 6

Pulse deficit _.

Accepted Answer

A)   is the difference between systolic and diastolic pressure
B)   refers to the gradual lowering of pressure in an artery
C)   is the difference between the apical and radial pulses
D)   can be palpated easily at the ankle

Question 7

The cardiac cycle _.

Accepted Answer

A)   is a graph showing the timing of heart valve closure
B)   is a graph of pressure changes in the heart as it contracts
C)   is a graph of electrical activity of the heart
D)   represents all of the events of the heart during one heartbeat D

Question 8

When taking blood pressure, the sounds heard when the pressure cuff is released are due to .

Accepted Answer

A)   the larger than normal diameter of the blood vessel
B)   the smaller than normal diameter of the blood vessel
C)   turbulent blood flow
D)   smooth blood flow

Question 9

The first heart sound heard during the cardiac cycle is associated with _ .

Accepted Answer

A)   closure of the semilunar valves
B)   closure of the AV valves
C)   opening of the semilunar valves
D)   opening of the AV valves B

Question 10

The term systole refers to .

Accepted Answer

A)   atrial depolarization
B)   ventricular depolarization
C)   ventricular contraction
D)   atrial contraction

Question 11

Which phase of the cardiac cycle is longest?

Accepted Answer

A)   ventricular systole
B)   isovolumetric contraction
C)   ventricular diastole
D)   isovolumetric relaxation

Question 12

During moderate exercise, .

Accepted Answer

A)   heart rate and blood pressure increase
B)   heart rate remains the same or decreases
C)   blood pressure decreases
D)   blood pressure remains at pre-exercise levels

Question 13

The AV valves close when _.

Accepted Answer

A)   ventricular systole begins
B)   ventricular pressure drops below the pressure in the large arteries leaving the heart
C)   ventricular diastole begins
D)   atrial contraction occurs

Question 14

AV valves are best auscultated at the .

Accepted Answer

A)   2nd intercostal space
B)   3rd intercostal space
C)   4th intercostal space
D)   5th intercostal space

Question 15

By taking a pulse you can determine _.

Accepted Answer

A)   pulse rate (normally equal to heart rate) 
B)   strength of the pulse
C)   regularity of the pulse
D)   pulse rate, regularity of the pulse, and strength of the pulse

Question 16

Heart sounds are associated with _.

Accepted Answer

A)   closure of the AV valves
B)   turbulent blood flow
C)   closure of the semilunar valves
D)   turbulent blood flow, closure of the AV valves, and closure of the semilunar valves

Question 17

Pulse pressure .

Accepted Answer

A)   is the large difference between the apical and radial pulses
B)   refers to alternating surges of pressure in an artery
C)   is the difference between systolic and diastolic pressure
D)   can be palpated easily under the chin

Question 18

What does the cardiac cycle reveal about the opening and closing of the heart valves?

Accepted Answer

A)   The AV valves open, then the semilunars open, then the AV valves close, followed by closure of the semilunars.
B)   There are times when all four heart valves are open.
C)   The AV valves close first, then the semilunars open and close, then the AV valves open.
D)   There are no times when all four heart valves are closed.

Question 19

The dichrotic notch is a result of pressure fluctuations that occurs when the aortic valve snaps shut. During which phase of the cardiac cycle can one observe the dichrotic notch?

Accepted Answer

A)   ventricular systole
B)   isovolumetric contraction
C)   isovolumetric relaxation
D)   atrial systole

Question 20

By convention, the cardiac cycle graphs the events of the left side of the heart. How would the graphs change if we looked, instead, at the right side of the heart?

Accepted Answer

A)   Both the pressure and volume changes in the right ventricle would be much less, while other events would be about the same.
B)   Pressure in the right ventricle would be much less, and all other events would be about the same.
C)   There would be no change in any of the events. B

Exam 33: Human Cardiovascular Physiology: Blood Pressure and Pulse Determinations

Assume that the heart is beating at 70 beats per minute. What is the approximate length of the cardiac cycle?

Correct AnswerverifiedShow Answer

Venous pressure _.

Correct AnswerverifiedShow Answer

Is it possible to determine blood pressure from a cardiac cycle graph? Why or why not?

Correct AnswerverifiedShow Answer

How is the degree of oxygenation of the blood related to skin color?

Correct AnswerverifiedShow Answer

The mean arterial pressure for a patient whose blood pressure is 110/80 is _ _.

Correct AnswerverifiedShow Answer

Pulse deficit _.

Correct AnswerverifiedShow Answer

The cardiac cycle _.

Correct AnswerverifiedD

When taking blood pressure, the sounds heard when the pressure cuff is released are due to .

Correct AnswerverifiedShow Answer

The first heart sound heard during the cardiac cycle is associated with _ .

Correct AnswerverifiedB

The term systole refers to .

Correct AnswerverifiedShow Answer

Which phase of the cardiac cycle is longest?

Correct AnswerverifiedShow Answer

During moderate exercise, .

Correct AnswerverifiedShow Answer

The AV valves close when _.

Correct AnswerverifiedShow Answer

AV valves are best auscultated at the .

Correct AnswerverifiedShow Answer

By taking a pulse you can determine _.

Correct AnswerverifiedShow Answer

Heart sounds are associated with _.

Correct AnswerverifiedShow Answer

Pulse pressure .

Correct AnswerverifiedShow Answer

What does the cardiac cycle reveal about the opening and closing of the heart valves?

Correct AnswerverifiedShow Answer

The dichrotic notch is a result of pressure fluctuations that occurs when the aortic valve snaps shut. During which phase of the cardiac cycle can one observe the dichrotic notch?

Correct AnswerverifiedShow Answer

By convention, the cardiac cycle graphs the events of the left side of the heart. How would the graphs change if we looked, instead, at the right side of the heart?

Correct AnswerverifiedB

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D

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B

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B