The tuberoinfundibular dopamine pathway primarily regulates which hormone?

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Prepare for the Dr. High Yield Psychiatry Test. Study with flashcards and multiple choice questions, each with hints and explanations. Ensure success in your exam!

Multiple Choice

The tuberoinfundibular dopamine pathway primarily regulates which hormone?

Explanation:
Dopamine from the tuberoinfundibular pathway tonically inhibits prolactin release from anterior pituitary lactotrophs. This hypothalamic dopamine acts on D2 receptors to suppress prolactin secretion; when dopaminergic input decreases or is blocked (as with certain antipsychotics), prolactin levels rise. Growth hormone, TSH, and cortisol are regulated by other hypothalamic factors (GHRH/somatostatin for GH; TRH/somatostatin for TSH; CRH for cortisol), not primarily by this pathway.

Dopamine from the tuberoinfundibular pathway tonically inhibits prolactin release from anterior pituitary lactotrophs. This hypothalamic dopamine acts on D2 receptors to suppress prolactin secretion; when dopaminergic input decreases or is blocked (as with certain antipsychotics), prolactin levels rise. Growth hormone, TSH, and cortisol are regulated by other hypothalamic factors (GHRH/somatostatin for GH; TRH/somatostatin for TSH; CRH for cortisol), not primarily by this pathway.

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