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6 Cards in this Set
- Front
- Back
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Preload |
Degree of stretch on myocardial fibers at the end of diastole, just before contraction |
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Afterload |
Pressure/resistance that the ventricle must overcome to eject blood through the semilunar valves & into circulation |
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Major factor that increases afterload... |
High Blood Pressure |
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Stroke Volume (SV) |
Amt of blood ejected by the left ventricle each contraction |
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Cardiac Output (CO) |
Amt of blood pumped from the left ventricle each minute
CO = HR * SV |
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Cardiovascular Changes R/T Aging |
- Left Ventricle Increases in size - Aorta and other large valves and arteries stiffen - Baroreceptors become less sensitive |
