Hypothalamic Nuclei Flashcards Preview

USMLE Step 1 > Hypothalamic Nuclei > Flashcards

Flashcards in Hypothalamic Nuclei Deck (9)
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1

2

Fxn/stimulus of ventromedial hypothalamic nucleus

  • mediates satiety
    • destruction ==> hyperphagia
  • stimulated by leptin

3

Fxn/stimulus of lateral hypothalamic nucleus

  • mediates hunger
    • destruction ==> anorexia
  • inhibited by leptin

4

Fxn of anterior hypothalamic nucleus

  • mediates heat dissipation via parasympathetics
    • destruction ==> hyperthermia

5

Fxn of posterior hypothalamic nucleus

  • mediates heat conservation via sympathetics
    • destruction ==> hypothermia

6

Fxn of arcuate hypothalamic nucleus

  • secretion of hormones:
    • dopamine (inhibits prolactin)
    • GHRH
    • GnRH

7

Fxn of paraventricular hypothalamic nucleus

  • secretion of hormones:
    • ADH
    • CRH
    • Oxytocin
    • thyrotropin-releasing hormone

8

Fxn of supraoptic hypothalamic nucleus

  • secretion of hormones:
    • oxytocin
    • ADH

9

Fxn of suprachiasmatic hypothalamic nucleus

  • circadian rhythm
  • pineal gland fxn

Decks in USMLE Step 1 Class (97):