3 Questions
Which of the following is true regarding pressure changes in the heart during the cardiac cycle?
The pressure changes in the left side of the heart are about 5 times greater than those in the right.
What is the difference between pulmonary and systemic circulation?
Pulmonary circulation is a low-pressure system and systemic circulation is a high-pressure system.
What are typical systolic and diastolic pressures in the aorta?
120 and 80 mmHg, respectively.
Study Notes
- Systole and diastole are contraction and relaxation periods of the heart.
- The cardiac cycle includes all events associated with blood flow through the heart during one heartbeat.
- Pressure and volume changes occur in the heart during the cardiac cycle.
- Pressure changes in the left side of the heart are about 5 times greater than those in the right.
- Each ventricle pumps the same volume of blood per beat.
- The length of the cardiac cycle is approximately 0.8 seconds.
- Blood flow through the heart is controlled by pressure changes and flows along a pressure gradient.
- Pulmonary circulation is a low-pressure system and systemic circulation is a high-pressure system.
- Typical systolic and diastolic pressures for the pulmonary artery are 24 and 8 mmHg, respectively.
- Typical systolic and diastolic pressures in the aorta are 120 and 80 mmHg, respectively.
Test your knowledge of the cardiac cycle with this quiz! From the basics of systole and diastole to the pressure and volume changes that occur in the heart, this quiz covers it all. See how well you know the differences between pulmonary and systemic circulation and the typical pressures in different parts of the heart. Sharpen your knowledge of the cardiac cycle and impress your friends with your newfound expertise.
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