A&p Ii Lab 3 Quiz

Front 1

Blood moves fastest in which vessel? Why?

Back 1

Artery; because it needs more pressure to get blood to the rest of the body

Front 2

Blood moves slowest in which vessel? Why?

Back 2

capillaries; becausethey have many more cross sections and the vessels are smaller

Front 3

Considering corresponding artery and vein, which has a smaller diameter? why?

Back 3

artery because they have thicker walls to carry blood under higher pressure

Front 4

volume pulse

Back 4

-the change in blood volume with each cardiac cycle

Front 5

amplitude

Back 5

the height (of the tallest peak) of volume pulse recording

Front 6

frequency

Back 6

Speed(faster/slower) change in time(heart rate)

Front 7

Dicrotic notch

Back 7

-notch that forms a small second peak after the first major peak of the volume pulse recording(recorded with plethysmograph)

-caused by elastic recoil of the artery

Front 8

notice the slope of the rising edge of the volume pulse is much steeper than the slope of the falling edge. Why?

Back 8

rising edge corresponds to active contraction and falling edge to relaxation, which is passive

Front 9

what changes in the finger are represented by the amplitude changes?

Back 9

-blood flow

-heart rate

-blood pressure

-movement

Front 10

elapsed time

Back 10

time @ peak y - time @ peak x= elapsed time

Front 11

heart rate

Back 11

5 beats/elapsed time x 60 sec/min= HR (bpm)

(or # of beats per 15 seconds x 4)

Front 12

Does the amplitude range increase or decrease right after exercise? why?

Back 12

Decreases; less blood flow through fingers more diverted to muscles

Front 13

What does the change in volume pulse amplitude and HR indicate about changes in the volume of blood flowing in the finger?

Back 13

less blood to the finger more blood to the muscles

Front 14

How does the amplitude of the volume pulse for the cooled compare with the recording at the normal room temperature?

Back 14

Decreases in amplitude

no change in heart rate

Front 15

Explain the difference in terms of the effects of cold on peripheral blood vessels

Back 15

Vaso constriction in response to decreased temperature

Front 16

What happens to the volume pulse amplitude when the finger is heated?

Back 16

Increased due to vaso dilation

Front 17

effects of smoking

Back 17

-increases peripheral vasoconstriction

-nicotine:stimulation

Front 18

Where can you find your pulse?

Back 18

radial artery, carotid artery, temporal artery, brachial artery, popliteal artery

Front 19

sphygmomanometer

Back 19

instrument used to indirectly measure peripheral blood pressure

Front 20

systolic pressure

Back 20

pressure measured with each ejection of the left ventricle during systole

Front 21

diastolic pressure

Back 21

the lowest pressure measured in the walls of a muscular artery when the left ventricle is no longer compressed(during diastole)

Front 22

what pressure do you pump the cuff to when taking BP?

Back 22

-180mm

-or to match systolic pressure

Front 23

Where do you place the cuff and the stethoscope?

Back 23

-cuff: 1 inch above the antecubital space(elbow)

-stethoscope: over brachial artery below the cuff

Front 24

pulse pressure

Back 24

-difference between systolic and diastolic pressure

-systolic-diastolic=pulse pressure

Front 25

bifurcation

Back 25

branching of a blood vessel

Front 26

what affects change in blood flow?

Back 26

temperature, body position, physical activity, and emotional state

Front 27

peak x

Back 27

any tall amplitude wave

Front 28

peak y

Back 28

count 5 amplitude waves from peak x

Front 29

does amplitude increase or decrease when a person stands? why?

Back 29

increases temporarily to get blood down to the feet and muscles in the leg

Front 30

what is the heart rate after a person stands up?

Back 30

increases slightly due to activity

Front 31

what is the heart rate when the recording returns to normal?

Back 31

drops back down t normal rate

Front 32

does the amplitude range increase or decrease after exercise?

Back 32

decrease

Front 33

nicotine will attach to which receptors? where are they?

Back 33

-nicotinic

-postganglionic sympathetic and parasympathetic neurons

Front 34

what role does nicotine play in effects of tobacco smoke?

Back 34

depends on whether it lands on parasympathetic or sympathetic postganglionic neurons

Front 35

how is tobacco smoke able to cause a wide range of effects?

Back 35

can activate both sympathetic and parasympathetic nervous system