11:067:327 Lecture Notes - Lecture 6: Preoptic Area, Lvmh, Pituitary Gland
21 Feb 2019
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Document Summary
A ejaculation emission and expulsionstage contractionof tunica darters muscle in thescrotum. 3hypothalamus posterior pituitarycommunication a pvn paraventricular nucleus producesoxytocin releasedinto posterior pituitaryand directly into bloodstream. 2 located ventral portion of the brainsurroundsthe 3rd ventricle. 2 axonsfromsurge and tonic centerextend to pituitary stalk. 5 exocytosisof rh is controlled by other neuronsterminatingontothe rh containingneurons. 6 rhenter a secondary plexus in the ap and signalpituitarycells to release other hormones. C notdilutedbythe systematic circulation d fast localized control of pituitaryhormones. 8 hypothalamicreleasinghormones a thyrotropin releasing hormone trh dun. C growthhormonereleasinghormone ghrh pvn1arcuate d gonadotropin releasing hormone gnrh mpoa arcuate. C toniccenter the arcuate nucleus arc andventromedial hypothalamus. 1 tonic centermay contain gnrhneurons depending upon species. D bothcenterscontain neurons that modulate gnrh release into the ppp. 3 decreases pulsatile release of gnrh lh this is called ionicrelease. 1 feedback in hpg axis increases gnrh and lhifsti release rare.
