**Cardiac Cycle Ejection Phase Quiz****Question:** Which of the following is/are true for the ejection phase of the cardiac cycle? Check all that apply.- [ ] Ventricular volume decreases- [ ] Ventricular pressure increases- [ ] Ventricular volume increases- [ ] AV valves open*Note:* Select all the statements that accurately describe the changes during the ejection phase of the cardiac cycle.

For a single complete heartbeat, the pattern of the heart's contraction and relaxation is referred to as the cardiac cycle. Systole refers to heart muscle contraction, and diastole refers to heart muscle relaxation. The cardiac cycle is classified into 3 stages: Atrial and ventricular diastole - During this stage, heart chambers are relaxed and filled with blood. Atrial systole - During this stage, atria contracts that result in the pushing of remaining blood into the ventricles. Ventricular systole - During this stage, the ventricles contract, which in turn pushes its blood content out through the pulmonary artery and aorta. The ejection phase of the cardiac cycle starts with the exceeding of ventricular pressure than the aorta and pulmonary artery pressure. An increase in ventricular pressure causes the semilunar valves to open (aortic and pulmonary valves) in order to eject the blood resulting in the decrease of ventricular volume. Hence, the first and the second options are correct. The third option is incorrect because ventricular pressure increases in the ejection phase, not decrease. The fourth option is incorrect because AV is in a closed state during the ejection phase.

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Anatomy and Physiology

Which of the following is/are true for the ejection phase of the cardiac cycle? Check all that apply. Ventricular volume decreases O Ventricular pressure increases O Ventricular volume increases O AV valves open

Which of the following is/are true for the ejection phase of the cardiac cycle? Check all that apply. Ventricular volume decreases O Ventricular pressure increases O Ventricular volume increases O AV valves open

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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