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ppk ppk
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13 years ago
List the steps and briefly explain what happens in orthostatic hypotension. What reflex counteracts it?
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Human Physiology: An Integrated Approach

Human Physiology: An Integrated Approach


Edition: 8th
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13 years ago
PPK, search the dictionary for crying out loud lol

Orthostatic hypotension is the decrease in blood pressure upon moving rapidly from a stable reclining position to standing. While reclining flat, gravity is distributed equally and so is blood. When moving to a standing position, blood initially pools in the lower extremities and cardiac output drops from about 5 L/min to about 3 L/min. Arterial blood pressure then decreases. The baroreceptor reflex should counteract orthostatic hypotension.
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