Pituitary shwanu

Zvemukati

• Mhedziso

Mhedziso

Iyo pituitary gland yakarara yakadzika mukati memusoro. Inowanzodaidzwa kuti "master gland" nekuti inodzora zvakawanda zvezvimwe zvinoitwa nemamwe magonyeti.

Pamusoro peiyo pituitary pane iyo hypothalamus. Iyo inotumira mahormone kana emagetsi masaini kune iyo pituitary. Izvi zvinotarisa kuti ndeapi mahormone ayo pituitary achaburitsa.

Semuenzaniso, iyo hypothalamus inogona kutumira hormone inonzi GHRH, kana kukura mahormone inoburitsa mahormone. Izvo zvaizokonzeresa kuburitsa kwepituitary yekukura kwehomoni, iyo inokanganisa saizi yemaviri mhasuru uye pfupa.

Izvi zvakakosha zvakadii? Kusatowana zvakakwana panguva yehudiki kunogona kukonzera pituitary kudzikisira. Kuwana zvakawandisa kunogona kukonzera mamiriro akapesana anonzi gigantism. Mumuviri watove wakakura, kuwanda kwekukura kwehomoni kunogona kukonzera acromegaly. Nemamiriro aya, maficha echiso anoomarara uye kosi; izwi rinodzika; uye ruoko, tsoka, uye dehenya kukura kuwedzera.

Iwo akasiyana mahormoni kuraira kubva kuiyo hypothalamus inogona kukonzeresa kuburitswa kweiyo thyroid inosimudzira mahormone kana TSH.TSH inokonzera kuti utachiona hubudise mahormone maviri anonzi T3 uye T4 ayo anoita kuti metabolism mune mamwe maseru mumuviri wese.

Iyo pituitary inogona zvakare kuburitsa hormone inonzi antidiuretic hormone, kana ADH. Iyo inogadzirwa muiyo hypothalamus uye inochengetwa mupituitary. ADH inokanganisa kugadzirwa kweweti. Kana yaburitswa, itsvo dzinotora yakawanda yemvura inopfuura nepakati pavo. Izvi zvinoreva kuti weti shoma inogadzirwa.

Doro rinotadzisa kuburitswa kweADH, nekudaro kunwa zvinwiwa zvinoguma nekuwedzera weti kugadzirwa.

Iyo pituitary gland inogadzira mamwe mahormone anodzora mamwe mabasa emuviri nemaitiro.

Semuenzaniso, follicle inosimudzira mahormone, kana FSH, uye luteinizing hormone, kana LH, mahormone anokanganisa mazai uye kugadzirwa kwemazai muvakadzi. Mune varume, zvinokanganisa ma testes uye kugadzirwa kwembeu.

Prolactin ihormone inokanganisa nyama yemazamu mumamai vanoyamwisa.

ACTH kana adrenocorticotrophic hormone inokonzeresa maadrenal glands kuburitsa zvinhu zvakakosha zvakafanana nesteroid.

Kukura, kuyaruka, mhanza, kunyangwe kunzwa senzara nenyota, anongova mashoma eanoteedzerwa anokanganiswa neiyo endocrine system.

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