Q. Regarding the function of the heart: (Solved)
1. at increased heart rates, diastole is shortened more than systole
2. the pericardial sac normally contains about 50ml of fluid
3. during the cardiac cycle, left ventricular ejection begins before right ventricular ejection
4. during expiration, the aortic valve closes before the pulmonary valve
5. the end—diastolic ventricular volume is about 170ml
- a. at increased heart rates, diastole is shortened more than systole