Tags: Anatomical Structure, Brain.

INAH-3 is the short form for the third interstitial nucleus of the anterior hypothalamus and is the sexually dimorphic nucleus of humans. The INAH-3 is significantly larger in males than in females irrespective of age. Homologues of the INAH-3 have been observed taking a direct role in sexual behavior in rhesus monkeys sheep and rats.

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