Cardiac Output
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10 terms
Terms | Definitions |
|---|---|
 Cardiac output | is the amount of blood pumped out by each ventricle in one minute. |
| Heart rate, stroke volume | cardiac output depend on _____ _____ and _____ ______. |
| Cardiac output= Heart rate х Stroke Volume | Mathematical relationship between cardiac output, heart rate, and stroke rate is _______ . |
| Heart Rate | The number of times the heart beats in one minute. |
| Stroke Volume | ______ ______ is the amount of blood pumped by each ventricle with each heart beat. |
| 75 ml / beat | ___ is the average stroke volume in adult at rest. |
| Stroke volume= EDV-ESV | Mathematical relationship between EDV and ESV: |
| Increased stretch in muscle fibers by increased blood volume returning to the heart, results in greater force of contraction which increases stroke volume. | The relationship between venous return and stroke volume is: |
| sympathetic activity | Increased _______ _______ on heart rate and stroke volume increases contractility of cardiac myocytes. |
| parasympathetic activity | Increased ______ ______ on heart rate and stroke volume does not directly change stroke volume because the ventricular myocytes are only sparsely innervated by parasympathetic nerves. |
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