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Home Q & A Board Biology-Related Homework Help Cell Biology
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barry barry
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12 years ago
Suppose that your roommate is on a 48-hour fast for food and drink. This means that she has no nutrients or liquids entering her system. What would happen to her blood pressure and why? What hormones would be triggered by the lack of incoming liquids? Explain how these hormones work and what the end result would be concerning her blood pressure and urine volume.
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12 years ago
Her blood pressure should decline due to a lack of incoming fluids. The lack of water would decrease plasma volume, ultimately lowering blood pressure. Because of this, aldosterone and antidiuretic hormone (ADH) should be signaled. Aldosterone will increase sodium reabsorption, which encourages water reabsorption. ADH will directly increase water reabsorption. Collectively, these will send water back to circulation in an attempt to keep blood volume and pressure up. This will decrease urine volume.
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