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Flashcards in Exam 1 Deck (78)
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1

What anchors the AV valves and the semilunar valves?

Annulous fibrosis

2

What valves lie between the atria and ventricles?

Atrioventricular valve
Right - tricupid valve
Lepf- bicuspid or mitral valve

3

What valve lie between the aorta, pulmonary system and ventricles

semilunar valves

4

What are the layers of the blood vessel wall?

Tunica intima
Tunica media
Tunic adventitia

5

Tunica intima

endothelium and elastic lamina

6

Tunica media

smooth muscle and elastic lamina

7

Tunica adventitia

connective tissue

8

What vasculature is distributive?

Elastic and muscular arteries

9

What vasculature is creates resistance?

Arterioles

10

What vasculature is for exchange

capillaries

11

What are the capacitance vessels?

venules and veins

12

What layer is significant in elastic arteries and what is its effect?

Tunica media with a large amount of collagen and elastin
Windkessel effect- elastic reservoir expanding and recoiling over a cardiac cycle

13

What is the main layer on muscular arteries? What does it prevent?

Tunica media
Prevents kinking at joints

14

What is the main layer in arterioles? What controls this?

Tunica media (smooth muscle)
sympathetic nervous system and adrenoreceptors (b receptors)

15

Capillary walls are made of?

single layer of epithelium

16

What do venules lack?

smooth muscle

17

What innervates veins? What is the effect of this innervation?

sympatheic nervous system
venoconstricion -> increased CVP -> increased cardiac output

18

systole

contraction phase

19

diastole

relaxation phase

20

heart rate

beat per min

21

stroke volume

volume ejected per beat

22

cardiac output

volume ejected per min

23

pulse pressure

systolic - diastolic

24

What is resistance

how hard it is for flow (Q) to occur through vessels

25

What is the major controlling factor of Q?

changes in resistance

26

What is the calculation for flow (Q)

Q= P / R

27

What is the equation for resistance (R)

R= 8vL / pi(r^4)

28

What has the largest effect on resistance

radius of the vessel (r^4)

29

The sum of all resistances in a series

Total peripheral resistance

30

Calculatoin for cardiac output

CO= (MAP-CVP) / TPR