Pituitary: chii uye chii chiri rawo muviri?

Chimwe chikuru nhengo yacho kwemakemikari anobudiswa hurongwa ndiye pituitary shwanu. Chii, vari kuchikoro achiri. Kutaura zvazviri, chikamu ichi uropi kuti basa kugadzira mahormone kuti dzinobatsira kwerunyararo dzokubereka basa, kukura, zvakakodzera muviri mumuviri. Chero, kunyanya kana kukwana nhamba pituitary mahormone unobereka, chero nyaya inotungamirira chirwere chakakomba.

Pituitary shwanu - chii?

The chikuru basa the pituitary shwanu - kubereka mahormone yakakwana kwazvo nokuda ishande dzemuviri. Nokuda mutemo uyu rinoitwa, uye kwetunhu rwe-melanin, kemikari gonads uye adrenal omumuviri, budiriro uye richiona pamusoro vatevedzere basa, uyewo kukura. Kusiyanisa pamberi undovakira uye zvenguva pituitary.

Anterior akafukidza

Tropic mahormone anogadzirwa Anterior pituitary, ndiko:

• somatotropin, zviri kukonzera kukura;
• adrenocorticotropic kemikari hunovhiringidza kwakarurama nokushanda adrenal;
• thyrotropin - anodzora basa thyroid shwanu;
• gondatropiny (follikulotropin uye lyuteotropin) kukurudzira mashandiro mumasero pabonde, uye lyuteotropin nebasa kugadzirwa inonzi estrogen uye androgen, uye follikulotropin - nokuti paumbwe dzisingaoneki zviri varume uye kukura follicles ari ovaries vakadzi;
• prolactin - chinobatanidzwa zvakananga nokuumbwa mukaka mu mazamu, kuti ndiye anokonzera lactation.

Pokumuka zvirwere zvakadai dwarfism kana gigantism, acromegaly, chirwere Cushing raMwari, Simmonds-Glinski chirwere anokonzerwa doro kana kushayiwa hormone chiri kukonzera kweShanduro pituitary shwanu. Zviratidzo chirwere kunogona kuitika vachiri vaduku, uye vakura.

zvokungoitawo mugove

Mugore zvenguva chakapatsanurwa zvinoberekwa melanocyte mutange kemikari. Ivo ndivo pigmentation vhudzi, ganda uye the retina. Panguva pamuviri Somuenzaniso, kazhinji kuchengetwa zvakadaro zvakaitika, sezvo achiipa ganda. Izvi imhaka zvibereko rwe-melanin, riri basa paumbwe pituitary shwanu. Chii uye nei paine ikozvino pachena.

Asi wakanaka-ganda vanhu red bvudzi, iro "asingadi kuramba" kusviba, muri vatakuri mutated Gene pamwe kemikari Kanotokonya anokonzera pigmentation.

posterior akafukidza

Hormone vasopressin uye oxytocin anobudiswa shure lobes, riri vo pituitary shwanu. Chii, chii vari mabasa avo? Chavainyanya basa - kubatanidzwa mune mutemo BP, tsandanyama matauriro, mvura muviri. Vanodawo basa basa sikarudzi, tsinga, vamwe mupfungwa mabasa uye kweropa.

Kubva oxytocin muyanzvi tsandanyama marwadzo ose dumbu masvingo, ura, gallbladder, izvozvo rinobatanidzwa yavaive zvemukaka ducts, iri mukati zamu.

Basa vasopressin kunokoshawo chaizvo. It anoita pfungwa weti inotungamirwa uye mvura-munyu muitiro mumuviri. Kana pakarepo hunomira kushanda kunze, ichava anowedzera kukura kwezvirwere zvakadai cheshuga insipidus, iyo chokuita yakakwirira kurasikirwa Urume.