Term
| Individual blood vessel diameter and mean blood flow velocity |
|
Definition
Larger diameter = higher velocity
-Difference b/t arteries and veins |
|
|
Term
| Total cross sectional area |
|
Definition
-Capillaries are smallest individual x-sectional
-Billions of them
-Largest total x-sectional area |
|
|
Term
| Blood volume distribution |
|
Definition
Greatest in veins-->venous resovoire
-Low resistance in veins-->lack of recoil, high compliance |
|
|
Term
| Total peripheral resistance |
|
Definition
Greatest in arterioles due to vasoactivity
-Resistance=force that regulates flow |
|
|
Term
| Arterioles Vasoactivity- respond to: |
|
Definition
- Neurological signal
- Hormonal signal
- Local signal
Cause constriction/dilation |
|
|
Term
|
Definition
Greatest in larger arteries- continually drops lower to veins
-High pressure shoots blood out of heart
-Low pressure drops blood back into the heart |
|
|
