Biology 449 - Animal Physiology October 17, 2008

Lecture 21 - Cardiovascular Physiology III

Heart (conclusion)

Cardiac output (cont'd)

Control of cardiac output

Blood flow

Vessel size, blood velocity and pressure

Control of blood distribution

Poiseuille's Law

Local vs. systemic effects of vasoconstriction & dilation

Regulation of arteriolar diameter

Terms to Know

Starling's Law of the Heart

Poiseuille's Law
Viscosity

Total peripheral resistance (TPR)
Mean arterial pressure (MAP)
Central venous pressure (CVP)

Vasodilation
Vasoconstriction
Active hyperemia
Nitric oxide

Readings

Lectures 20-21: Chapter 9, pages 402-424
Lectures 22-23: Chapter 11, pages 462-466, 470-492