The Heart

mitral (bicuspid) valve

4

pulmonary arteries

2

aorta

10

right ventricle

7

right atrium

9

superior vena cava

1

inferior vena cava

13

pulmonary veins

3

pulmonary valve

11

tricuspid valve

12

left atrium

8

left ventricle

6

aortic valve

5

septum

wall of tissue that separates left and right heart

left

is left atrium/ventricle or right atrium/ventricle more muscular (thicker)?

vein

does vein or artery have more space?

artery

does vein or artery have thicker wall?

vein

does vein or artery have thinner wall?

artery

does vein or artery have less space?

blue

is deoxygenated blood represented with blue or red?

red

is oxygenated blood represented with blue or red?

right

which half of the heart does pulmonary circulation mainly operate in?

left

which half of the heart does systemic circulation mainly operate in?

sends blood from heart (to other areas of body)

function of arteries

sends blood to heart

function of veins

artery

is aorta a vein or artery?

vein

is vena cava a vein or artery

material exchange w/ tissues

function of capillaries

thick

width of wall of artery

thin

width of wall of vein

extremely thin (single cell thick)

width of wall of capillary

narrow

lumen diameter of artery

wide

lumen diameter of vein

extremely narrow (one cell wide)

lumen diameter of capillary

no

are there valves present in arteries?

yes

are there valves present in veins?

no

are there valves present in capillaries?

high

pressure in artery

low

pressure in vein

low

pressure in capillary

lumen

A

endothelial layer (tunica intima)

B

smooth muscle & elastic fiber layer (tunica media)

C

fibrous (collagen) layer (tunica externa)

D