Which of the following statements regarding

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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**Cardiac Cycle Quiz**

**Question:** Which of the following statements regarding the cardiac cycle is **TRUE?**

1. ○ The AV valves are open during mid-to-late diastole.
2. ○ The first heart sound is caused by the closing of the semilunar valves.
3. ○ Closure of the AV valves occurs when the ventricles reach end-systolic volume.
4. ○ The dicrotic notch is a result of closure of the AV valves.
5. ○ The aortic valve is open during isovolumetric ventricular contraction.

**Explanation:** 
Please select the statement that correctly describes a true aspect of the cardiac cycle. This question evaluates your knowledge about the stages of the cardiac cycle, including the roles of the heart valves and heart sounds.
Transcribed Image Text:**Cardiac Cycle Quiz** **Question:** Which of the following statements regarding the cardiac cycle is **TRUE?** 1. ○ The AV valves are open during mid-to-late diastole. 2. ○ The first heart sound is caused by the closing of the semilunar valves. 3. ○ Closure of the AV valves occurs when the ventricles reach end-systolic volume. 4. ○ The dicrotic notch is a result of closure of the AV valves. 5. ○ The aortic valve is open during isovolumetric ventricular contraction. **Explanation:** Please select the statement that correctly describes a true aspect of the cardiac cycle. This question evaluates your knowledge about the stages of the cardiac cycle, including the roles of the heart valves and heart sounds.
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