Question 1

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 
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 2

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. 
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

Question 3

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 
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 4

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 
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 5

Which phase of the cardiac cycle is longest?

Accepted Answer

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

Question 6

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 
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 7

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 
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 8

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. 
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 9

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

Question 10

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 
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 11

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 
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 12

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

Question 13

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

Question 14

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

Question 15

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 
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 16

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 
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 17

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 
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 18

The term systole refers to .

Accepted Answer

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

Question 19

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. 
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 20

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 
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

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

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

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?

The cardiac cycle _.

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

Which phase of the cardiac cycle is longest?

By taking a pulse you can determine _.

During moderate exercise, .

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

AV valves are best auscultated at the .

Heart sounds are associated with _.

The AV valves close when _.

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

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?

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

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

Pulse deficit _.

Venous pressure _.

The term systole refers to .

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

Pulse pressure .

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