Performance Adaptations

Question 1

What performance-related adaptations can occur in the heart?

Answer 1

Bradycardia is caused by:
- Increased blood volume
- Increased venous return.
- Increased vagal tone
- Decreased sympathetic drive.
- Decreased sinoatrial node firing.

Question 2

What performance-related adaptations can occur with regard to stroke volume?

Answer 2

Increased stroke volume caused by:
- Increased preload
- Increased frank starling effect.
- Increased myocardial hypertrophy
- Increased cardiac output.