1. Cardiac Structure and Control

2. Structure of Cardiac Muscle

3. Ionic Concentrations

4. Cardiac Depolarization

5. Myocardial Contraction

6. Cardiovascular Control Center

7. Baroreceptor Resetting

8. Baroreceptor Resetting

9. Summary of Cardiac Responses to Exercise
Central command activation of CVC
Decreased vagal tone
Baroreceptor set point increases
Increased hypothalamic input
Increased muscle afferent input
Increased plasma catecholamines

10. Summary of Cardiac Adaptations
Increased parasympathetic tone
Decreased intrinsic rate
Increased heart size
Increased diastolic filling time
Increased blood volume
Increased ventricular compliance
Increased contractility