1. Bio 449 Lecture 20 - Cardiovascular Physiology III Oct. 15, 2010
Heart (cont’d) Cardiac output (conclusion) 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 Regulation of arteriolar diameter Capillary function Lymphatic system
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 Ultrafiltrate Lymph Lymphatic system Lymphatic vessels Edema
Readings
Lectures 18-20: Chapter 14 & 15
Lectures 21-22: Chapter 17

2. Control of Cardiac Output

3. Effects of sympathetic activity on HR
Fig

4. Effects of parasympathetic activity on HR
Fig

5. Starling’s Law
Fig

6. Vessel size, blood velocity and pressure
Blood Flow
Vessel size, blood velocity and pressure

7. BP levels throughout circulatory system
Fig. 15-5

8. BP levels throughout circulatory system
Fig. 15-5

9. Control of blood distribution

10. Fig

11. Poiseuille’s Law

12. Local vs. systemic effects of vasoconstriction

13. Regulation of arteriolar diameter

14. Capillary function

15. Movement across capillary walls
Similar to Fig

16. Lymphatic system

17. Lymph capillary
Overlapping
endothelial cells
Interstitial
fluid
Lymph

18. Uptake of lymph Fig. 15-19 Venule Arteriole Net filtration
Net absorption
Lymph vessels
Net filtration
Venule
Fig

19. Lymphatic system Fig. 15-19 Thymus
Spleen
Lymph nodes
Thymus
Blind-end lymph capillaries
Lymph fluid empties into superior vena cava.
Fig