1. Bio 449 Lecture 19 - Cardiovascular Physiology II Oct. 13, 2010
Heart Electrical events of the heartbeat Mechanical events of the heartbeat Cardiac output Heart rate Stroke volume 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
Terms to Know Systole Diastole Isovolemic contraction Isovolemic relaxation Ventricular ejection Heart rate Stroke volume Cardiac output 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 18-20: Chapter 14 & 15

2. Myogenic pacemakers

3. Elastic recoil of arteries
Ventricular contraction
Arterioles
Ventricular relaxation
Fig.15-4

4. Mechanical events of the heartbeat

5. Systole and diastole
Similar to Fig.14-24

6. Overview of EKG

7. Electrical events and EKG pattern
Fig

8. Standard EKG
Fig

9. Summary of cardiac cycle

10. Fig

11. Fig

12. Fig

13. Fig

14. Fig

15. Cardiac Output

16. Control of Cardiac Output

17. Effects of sympathetic activity on HR
Fig

18. Effects of parasympathetic activity on HR
Fig