Lab Quiz #3

Question 1

what is a plethysmograph?

Answer 1

an instrument used to measure changes in the size of organ or the amount of blood moving through it

Question 2

how does cold effect the amplitude?

Answer 2

it decreases

Question 3

does the amplitude increase or decrease right after exercise?

Answer 3

it decreases

Question 4

what happens to the heart rate immediately after exercise?

Answer 4

it increases

Question 5

what equipment do we use to test volume pulse?

Answer 5

1) plethysmograph

2) powerlab computer software

Question 6

what does more blood volume lead to?

Answer 6

more pressure and more flow

Question 7

what does less blood volume lead to?

Answer 7

less pressure and less flow

Question 8

what is the systolic pressure created from?

Answer 8

as the blood flows through the occluded artery

Question 9

why is an artery smaller in diameter than veins?

Answer 9

because there is more pressure and a thicker tunica media

Question 10

why does blood move faster in arteries than veins?

Answer 10

they have more pressure, they’re closer to the heart and cause the blood to move at a much higher rate

Question 11

what happens to the heart rate wen the recording returns to normal?

Answer 11

it drops back down to normal rate

Question 12

why does the heart increase slightly after the person stands up?

Answer 12

because of activity

Question 13

what else does the factors that affect volume pulse effect?

Answer 13

arterial blood pressure

Question 14

how does the cold affect peripheral blood vessels?

Answer 14

vasoconstriction in decreased temp

Question 15

what is diastolic pressure?

Answer 15

the minimum pressure during diastole.

Question 16

what is the first sound heard with the stethoscope?

Answer 16

the systolic pressure

Question 17

what artery is the pulse customarily used?

Answer 17

radial artery

Question 18

why does the amplitude decrease after exercise?

Answer 18

less blood flow through fingers so that more blood can go to muscles

Question 19

what happens to the systolic pressure immediately after exercise?

Answer 19

it increases

Question 20

does the amplitude increase or decrease when the person stands?

Answer 20

it temporarily increases

Question 21

what is a sphygmomanometer?

Answer 21

an instrument used to measure peripheral blood pressure

Question 22

what does the change in volume pulse amplitude and heart rate indicate about changes in the volume of blood flowing through the finger?

Answer 22

a decrease in amplitude=a decrease in blood flow

Question 23

what are some other locations to take a pulse?

Answer 23

1) carotid artery (side of neck)
2) temporal artery (temple, above and outside of the eye)
3) brachial artery (inner side of biceps)
4) popliteal artery (behind knee)

Question 24

which vessels does blood move the slowest?

Answer 24

capillaries

Question 25

what is the formula to calculate heart rate from pulse rate?

Answer 25

beat/elapsed time (seconds) X 60 seconds/1 minute= heart rate (bpm)

Question 26

what is systolic pressure?

Answer 26

the peak pressure during ventricular systole

Question 27

what happens to diastolic pressure immediately after exercise?

Answer 27

it increases

Question 28

what does the point of complete cessation of sound indicate?

Answer 28

that the artery is no longer compressed even at the lowest pressure

Question 29

what is the purpose of getting a volume pulse?

Answer 29

it reflects the blood flow in peripheral circulation

Question 30

what happens to heart rate a few minutes after exercise?

Answer 30

it returns to normal

Question 31

which vessels does blood move fastest?

Answer 31

arteries

Question 32

how does heat effect the amplitude?

Answer 32

it increases

Question 33

does the heart rate increase or decrease after exercise?

Answer 33

increases

Question 34

what factors does the magnitude of the change in peripheral blood volume effect volume pulse? (4) (TBPE)

Answer 34

1) temperature 2) body position 3) physical activity 4) emotional state

Question 35

what happens to a persons heart rate after the person stands up?

Answer 35

it increases slightly

Question 36

when a person is standing what increases and from what?

Answer 36

hydrostatic pressure from gravity

Question 37

what happens to the systolic pressure a few minutes after exercise?

Answer 37

it returns to normal

Question 38

what is the amplitude?

Answer 38

the height of the volume pulse recording

Question 39

what instrument do you use to measure peripheral blood pressure?

Answer 39

a sphygmomanometer

Question 40

what is the pulse pressure?

Answer 40

the difference between systolic and diastolic pressure

Question 41

how does the amplitude of the volume pulse for the cooled finger compare to volume pulse for the recording at room temp?

Answer 41

the decrease in amplitude= peripheral vasoconstriction

Question 42

as the pressure continues to decrease after systolic pressure what happens to the sound?

Answer 42

it should become louder, then dull and muffled and then cease

Question 43

what does the cessation of sound determine?

Answer 43

the diastolic pressure

Question 44

why does blood move the slowest in capillaries?

Answer 44

it needs time to unload

Question 45

explain all the changes in terms of homeostasis?

Answer 45

body returns the heart rate back to normal

Question 46

what can the dicrotic notch be in some people?

Answer 46

in some people very distinct and in others absent

Question 47

which is smaller in diameter an artery or vein?

Answer 47

artery

Question 48

what happens to diastolic pressure a few minutes after exercise?

Answer 48

it returns to normal

Question 49

what is the dicrotic notch caused by?

Answer 49

the elastic recoil of an artery after the closure of the aortic valve

Question 50

what equipment do you need to measure peripheral blood pressure?

Answer 50

a sphygmomanometer and stethoscope

Question 51

what is a volume pulse?

Answer 51

a change in blood volume for each cardiac cycle