Which describes hormonal regulation of fluid balance?
1. The posterior pituitary secretes aldosterone, leading to sodium retention and water excretion.
2. The kidneys secrete antidiuretic hormone and aldosterone, causing water and po-tassium retention.
3. The pituitary gland secretes antidiuretic hormone, stimulating aldosterone release to retain water and sodium.
4. The adrenal cortex secretes antidiuretic hormone, leading to potassium retention and water excretion by the kidneys.
3
3. One mechanism of fluid balance is pituitary gland secretion of antidiuretic hor-mone (ADH) stimulating the release of aldosterone to conserve sodium; because where sodium goes, water follows, and water is retained. ADH is the wa-ter-conserving hormone and aldosterone is the sodium-conserving hormone.
1, 2, and 4. The pituitary gland secretes ADH and the adrenal cortex secretes aldos-terone.
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