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

Question 1

The first of the two numbers measured when taking the blood pressure represents .

A)isovolumetric pressure
B)diastolic pressure
C)systolic pressure

Answer 1

C

Question 2

During moderate exercise, .

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

Answer 2

A

Question 3

Blood pressure is .

A)the pressure of the blood against the blood vessel walls
B)a number that is the average of the systolic and diastolic pressures
C)the pressure of the blood against the blood vessel walls, generally measured in veins, and a number that is the average of the systolic and diastolic pressures
D)generally measured in veins

Answer 3

A

Question 4

The semilunar valves are forced open when _.

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

Question 5

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

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 6

Which phase of the cardiac cycle is longest?

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

Question 7

Heart murmurs .

A)often indicate problems with heart valves
B)often indicate problems with heart valves, can be used to diagnose failure of the heart valves to close tightly, and can be used to diagnose constricted heart valves
C)can be used to diagnose constricted heart valves
D)can be used to diagnose failure of the heart valves to close tightly

Question 8

When the upper limb is raised, and the pressure cuff inflated, blood flow to the forearm is stopped, and the hand .

A)flushes red
B)turns very pale
C)has a blue color
D)first turns red, then becomes white

Question 9

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

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

Question 10

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

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

Question 11

If you cut yourself and blood spurts rhythmically from the injury, you have probably cut .

A)a vein
B)many veins and capillaries
C)an artery
D)a capillary

Question 12

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

A)0)86 sec
B)0)80 sec
C)0)75 sec
D)0)92 sec

Question 13

The term systole refers to _.

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

Question 14

The QRS complex of the electrocardiogram begins .

A)just prior to atrial contraction
B)just prior to ventricular contraction
C)well after ventricular contraction
D)just after ventricular contraction begins

Question 15

Pulse pressure .

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

Question 16

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

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

Question 17

In comparing the volume of blood moved from atria to ventricles when the atria contract with the volume of blood ejected from the heart when the ventricles contract, we observe that .

A)atrial contractions move as much blood into the ventricles as ventricles eject
B)atrial contractions move less blood into the ventricles than ventricles eject
C)atrial contractions move more blood into the ventricles than ventricles eject

Question 18

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

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

Question 19

The cardiac cycle .

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

Question 20

Heart sounds are associated with .

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

Question 21

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

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

Question 22

Venous pressure _.

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

Question 23

By taking a pulse you can determine _.

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

Question 24

The pressure generated during contraction of the atria is that generated during contraction of the ventricles.

A)less than
B)greater than
C)the same as

Question 25

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?

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.

Question 26

The first heart sounds are best heard .

A)just beneath the xiphoid process of the sternum
B)in the second intercostal spaces at the sternal margins
C)directly over the body of the sternum, just inferior to the sternal angle
D)in the 5th intercostal spaces, at various distances from the sternal margins