blood vesseks quick cards LAB

Arteries- red

Carry deoxygenated blood out of heart

veins- blue

Carry oxygenated blood to heart

Capillary

basement membrane, endothelial cells

3 types of capillaries

Continuous, fenestrated, sinusoid

Walls of vessels order except capillaries

Tunica intima, media, & externa

Tunica intima

Endothelium, subendothelia layer, internal elastic membrane

Tunica media

Smooth muscle and elastic fibers, external elastic membrane

Tunica externa

Collagen fibers, vasa vasorum

Continuous capillary

Fenestrated capillaries

active filtration,kidney

Swiss-cheese like pores

Sinusoid capillaries

Liver, bone marrow, spleen,

Irregularly shaped, incomplete basement junction

MOST PORUS

MOST PERMABLE LIMITED LOCATION

Why is the lower pressure in the capillaries?

exchange of gases and nutrients requires low pressure system & they’re fragile

Do arteries have valves?

No

Do Veins have valves?

Yes

Venous valves

Prevent back flow

blood pressure

Force per unit area exerted on wall of blood vessel by blood

Resistance

Peripheral resistance- resistance to blood flow

Arteriole

Smaller arteries

Veinules

Smaller veins

MAP- mean arterial pressure

MAP= SV x HR x R

Does the heart spend more time in diastole or systole?

Diastolr because it takes more time for the heart to fill up (LV)

Systolic

Contract

Diastole

Relaxed