Lucy has had a bout of gastroenteritis after ingesting pizza that has been left out in the open for a few days. She has been vomiting for the past three hours, and feels extremely dehydrated. What do we expect will occur to her?

Question

Answer

Her osmoreceptors, located in the paraventricular and supraoptic nucleus will swell as she is dehydrated.

Answer

Antidiuretic hormone (ADH) secretion will remain the same as this is an acute episode, and thus her urine output will remain the same.

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Aquaporin channels will be released from their vesicles and fused to the collecting duct luminal membrane.

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Lucy will have a decrease in plasma osmolarity due to her extreme dehydration, and her body will try to increase the plasma osmolarity.

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Lucy has had a bout of gastroenteritis after ingesting pizza that has been left ...

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