NURS 6501: MIDTERM EXAM:
Where is antidiuretic hormone (ADH) produced?
Group of answer choices
- Adrenal gland
- The midportion of the pituitary gland
- Posterior pituitary gland
- Anterior pituitary gland
The correct answer is Posterior pituitary gland.
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Explanation:
Antidiuretic hormone (ADH), also known as vasopressin, is produced in the hypothalamus, but it is stored and released from the posterior pituitary gland.
Here’s how it works:
- The hypothalamus synthesizes ADH and transports it to the posterior pituitary gland, where it is stored until needed.
- When the body needs to conserve water (e.g., in cases of dehydration), the posterior pituitary gland releases ADH into the bloodstream.
- ADH acts primarily on the kidneys, promoting water reabsorption and thus concentrating the urine.
Why the other options are incorrect:
- Adrenal gland: The adrenal glands produce hormones like aldosterone, cortisol, and epinephrine, but not ADH.
- The midportion of the pituitary gland: The midportion of the pituitary (the pars intermedia) does not play a significant role in hormone production in humans.
- Anterior pituitary gland: The anterior pituitary gland produces hormones such as growth hormone, prolactin, ACTH, and others, but not ADH.Conclusion:
ADH is produced by the hypothalamus and released from the posterior pituitary gland.
