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: Heart Regulation 1
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Heart Regulation #1
Intrinsic and Extrinsic Regulation
Your Answer
Correct Answer
1. Cardiac Output (CO) is measured in "beats per minute."
True
False
2. Stroke Volume (SV) is measured in "ml per minute."
True
False
3. Heart Rate (HR) is measured in "beats per minute."
True
False
4. CO = HR X SV
True
False
5. Stroke Volume (SV) is measured in "ml per beat" - the blood pumped per ventricle each time the heart contracts.
True
False
6. Cardiac Output can be increased by increasing either SV or HR, or even by increasing both SV and HR.
True
False
7. Cardiac output (CO) is the volume of blood pumped by either ventricle of the heart in one minute.
True
False
8. "Intrinsic regulation" of the heart refers to mechanisms contained within the heart itself.
True
False
9. Increasing "preload" will increase the stretching of the ventricles - which then relates to increased stroke volume.
True
False
10. Preload is the total volume of blood in the IVC and SVC during ventricular contraction.
True
False
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Last modified on November 14, 2005
