A negative feedback loop rudzi rwekuzvigadzirisa. Mune mhando iyi yemhinduro yakasununguka, kuwedzerwa kwakabuda kubva muhurongwa kunodzivirira ramangwana rakagadzirwa nehurongwa. Mune mamwe mazwi, sarudzo inotarisira kuti yakawanda sei chigadzirwa chinogadzirisa nekuvhara pasi zvigadzirwa kana maitirwo emitengo kana chiyero chechigadzirwa chakawedzerwa. Mhinduro dzisina kururama dzinokonzerwa nemhando dzakawanda dzomutemo wehomoni mumutumbi wemunhu. Ivo vakanaka pakuchengetedza maitiro anoramba aripo.
Uyewo Anozivikanwa Se: inhibitory loop
Muviri seChokwadi - Mhinduro dzeMapupa Gadzirisa Kugadzirwa
Fungidzira kuti muviri muviri unogadzira Chigadzirwa X. Uyezve, fungidzira kuti kugadzira zvakanyanya Mutengo X kunodhura uye kunoparadza. Nokudaro, muviri unoda nzira yekuvhara fekitari apo zvakakwana Product X yakagadzirwa. Izvo zvinodaro izvi kuburikidza neshoko rakashata loop. Izvo zvinorevei ndezvokuti kukurumidza kwekugadzirwa kunonzwisisika kuwandisa kweChito X. Apo inotanga kuvaka, kubudiswa kunononoka uye kunodzika. Kusiyana neizvi kwaizova mazano akanaka loop. Muchiitiko ichocho, kuwedzera kweMutambo X kwaivapo, kukurumidza muti wacho waizoita zvakawanda. Iko rudzi rwemamiriro ehurumende hunobuda nyore nyore. Kusiyana neizvi, chinhu chisina kunaka reloop is self-regulating.
Mienzaniso Yezvisina Kuipa Mhinduro Masango muRubatsiro Rwokuita
Imwe inonyatsonzwisiswa yakaipa nenyaya yakasununguka ndeyekudzimai kwemwedzi . I hypothalamus inobereka gonadotropin inobudisa hormone (GnRH).
Iyo GnRH inoratidza kuti pituitary inobereka follicle inokonzera hormone (FSH). FSH inotaurira mazai mazai kuti abudise estrogen. Kukura kwemaitiro eestrogen (pamwe neprogesterone uye testosterone, izvo zvinotungamirirwa kuburikidza nemicheka yakafanana) zvisinei, zvinodzivisa kugadzirwa kweGnRH. Izvi zvinokonzera kuti pituitary iite pasi shoma FSH, iyo inokonzera mavari maitiro kuti aite vashoma estrogen.
Imwe mhinduro inonzi "loop" inodzora vaginal acidity. Izvo zvepachikadzi pH inenge inenge 4 - zvinyoro acidic. Izvi zvinobatsira kudzivirira kukura kwebhakitiriya nezvinetso nemaDDS . Ichokwadi, chimwe chezviratidzo zvebhakitiriya vaginosis ndeye pH yepamusoro 5. I-lactic acid inotsigira iyi pH inoumbwa nelactobacilli - chikamu chechimiro chechikadzi chechikadzi . Aya mabhakitiriya anokura nokukurumidza uye anogadzira mamwe asidi pane yakakwirira pH. Zvadaro, apo pH inoswedera pedyo ne4, inononoka uye inomira. Iyi ndiyo nzira iyo pH inotungamirirwa nayo mumukadzi. Inotsanangurawo mamwe emusiyano mumadzimai akasiyana-siyana emukadzi pH. PH inopesana zvichienderana neavo mabhakitiriya chaiwo aripo.
Sources:
Boskey ER, Cone RA, Whaley KJ, Moench TR. Mhemberero yemudzimai asiri: high D / L lactate ratio inopindirana nemaabhakitiriya ariyo makuru. Hum Reprod. 2001 Sep; 16 (9): 1809-13.
Boskey ER, Telsch KM, Whaley KJ, Moench TR, Cone RA. Acid yakagadzirwa nemaruva emukadzi in vitro inopindirana nehuwandu uye huwandu hwomudzimai acidification. Infect Immun. 1999 Oct; 67 (10): 5170-5.