Mazai mazai ndiwo chikamu chinokosha chekuvandudza nekuberekwa kwevakadzi.
Anatomy ye maOvari
Mazai mazai ndiwo mapepa emasikirwo (anenge ari mashizha uye maitiro emuarmond) muhutano hwemadzimai umo mazai anochengeterwa uye estrogen inogadzirwa. Izvo zvinoshandiswa munzvimbo nenhengo dzakasiyana-siyana kune rumwe rutivi rwechibereko. Mazai anotakurwa kubva mavha mavari kusvika pachibereko kuburikidza ne fallopian tubes.
Akakomberedza mukova we fallopian tubes zviduku fimbriae, kana zvigunwe-zvakafanana, izvo zvinotungamirira mazai mukati me tube mumwedzi wega wega.
Mavhisi maAvari kuburikidza neHupenyu
Mukadzi anoberekwa namazai ose aanenge achamboda, anenge mamiriyoni imwe mune rimwe nerimwe mavhavha. Nokupera, apo iye angangodaro anogamuchira nguva yake yokutanga , nhamba ye mazai muvhavha imwe neimwe inenge yakapoteredza 200,000 kusvika 400,000. Munguva yekubereka kwake makore, mazai anenge 300 kusvika ku500 achakura uye achabudiswa panguva yehuvhu. Mushure mokunge apera, mazamu acho acharega kubudisa mazai, uye atrophy (shrink). Pamusana pekurasikirwa kwekuvhara maitiro uye kurasikirwa kwekugadzirwa kweesrogen, vakadzi ve postmenopausal vanowanzoona zviratidzo zvakadai sekupisa kunopisa uye kuoma kwemadzimai. Estrogen kukwana kunowedzerawo mikana yevakadzi yekuvandudza osteoporosis, iyo inowedzera ngozi yavo yefupa kuputsika.
Mavharosi 'Basa muKutenda Kwemwedzi
Kunyange zvazvo zvigadziro zvingave zvisiri izvo pakutanga, zvichazopedzisira zvichinyanya kuve nemazuva anenge 28 pakati pemazuva ekutanga ega yoga.
Mwedzi woga woga, anenge 10 kusvika ku12 egg follicles inotanga kukura. Mumwe achaenderera mberi kuti abudise mazai akakura. Zvimwe zvacho zvichabva zvadzoserwa mukati memaviri evari. Inenge mazuva gumi nemana kusvika mumukadzi, mazai akakura achasunungurwa mune imwe nzira inozivikanwa sehuvhu. Mushure mokunge mavhunga aitika, follicle isina chinhu inozivikanwa se corpus luteum.
Ichabereka progesterone uye mamwe mahomoni anokosha pakuzvitakura kwemazuva gumi nemaviri.
Progesterone inobatsira kugadzirira uye kubvisa chigadziko chechibereko chekugadziriswa kana kubudiswa kweii neuviri kuchiitika. Uyewo, kana kuisa muviri kunowanikwa, rubatsiro urwu rwemhomoni rucharamba rwuchienda mukati mese pamuviri kuitira kudzivirira mamwe mazai kubva pakukura. Kana kudyara kusina kuitika, progesterone mazinga achaderera, corpus luteum ichaderera, uye kuenda kumwedzi kuchatanga.
Hormonal Basa reMavhizha
Mavha mavari anonzwisisika nemigumisiro uye kushandiswa kwe endocrine kana hormonal system. Vanopindura uye vanobudisa mahomoni avo sezvaanoda nemuviri. Ichokwadi, chikamu chechipiri chikuru chechirwere ndechekuvhara mahomoni ezvepabonde - estrogen, progesterone, uye zvishoma zvishoma zve androgens, izvo zvinokonzera maitiro evarumekadzi zvepabonde kukura nekuchengetedzwa.
Mukuwedzera, mazai aya anopindurawo kune FSH neLH iyo inogadzirwa nekatsanana kadiki muuropi inonzi pituitary gland. FSH, kana kuti follicle inokonzera hormone, inokonzera kuti estrogen level iwedzere uye boka reii follicles kukura mwedzi mumwe nomumwe. Sezvo imwe follicle inenge iine simba uye inosvika pakukura, yepamusoro yeestrogen level inokonzera kuti LH (luteinizing hormone) iwedzere, zvichiita kuti kuve nechirwere.
The Bottom Line
Mavha mavari nemahomoni ayo anogadzira (kunyanya estrogen uye progesterone) anoita basa rinokosha mukukwegura kwevakadzikadzi.
Kunobva:
The North American Menopause Society. (2014). Kudzidzira kumisa kumwedzi: Bhuku reMakiriniki, 5th ed. Mayfield Heights, OH: The North American Menopause Society.