Class 7: Vascular System Flashcards Preview

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Flashcards in Class 7: Vascular System Deck (61)
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1

arteries carry blood to/away heart

away

2

veins carry blood to/away heart

back to heart

3

capillaries connect...

smallest arteries to veins

4

Tunica Intima composed of, function

smooth endothelium, clot prevention

5

Tunica Media composed of, function

smooth muscle, vasoconstriction or vasodialiation

6

Tunica Externa has a connection to

blood vessels and tissue

7

Biggest Arteries are...

aorta, common corotid, subclavian, pulmonary trunk, common iliac

8

ascending aorta are the... that supply the...

right and left coronary that supply the heart

9

aortic arch components

brachocephalic, left common carotid, left subclavian

10

left common carotid artery supplies

left side of head

11

left subclavian supplies the

shoulder and upper limb

12

the brachiocephalic artery supplies

the right common corotid-right side of head
right subclavian-right shoulder and upper limb

13

aneurysm is a

weak point in the artery or heart wall

14

baroreceptors sense

pressure

15

sensory structures monitor, 3 types

blood pressure and chemistry
-carotid sinuses
-carotid bodies
-aortic bodies

16

Capillaries are the site where

nutrients, wastes, and hormones bass between the blood and tissue fluid through the walls of the vessels

17

Mechanisms involved with capillary exchange are

diffusion and transcytosis

18

exchanges between the blood and surrounding tissues are made through the

capillary walls

19

What is the most important form of capillary exchange?

diffusion

20

what is help back during capillary exchange/diffusion

large particles (proteins)

21

precapillary sphincters control...

which beds are well perfused

22

when capillary sphincters open

the capillaries are well perfused with blood and exchage with the tissue fluid

23

when capillary sphincters close

blood bypasses the capillaries and flows through the thoroughfare to channel to the venule

24

3/4th of the bodies... are shut down at any give time

body's capillaries

25

capillaries function to move blood via

hydrostatic pressure and colloid osmotic pressure

26

capillaries reabsorb.... of the fluid they filter

about 85%

27

15% of the body's fluids are absorbed by the

lymphatic system and returned to the blood

28

Edema is caused by (3)

1) increased capillary filtration
2) reduced capillary absorption
3) obstructed lymphatic drainage

29

veins have a greater/lesser capacity for blood containment than arteries

greater

30

vein characteristics

thinner walls, flaccid, less muscular and elastic tissue