Yintoni i-corpus luteum kwaye yintoni ubudlelwane bayo nokukhulelwa?

Umxholo

• Umsebenzi weCorpus luteum
• Ubudlelwane phakathi kwe-corpus luteum kunye nokukhulelwa

I-corpus luteum, ekwabizwa ngokuba ngumzimba otyheli, sisakhiwo esakha emva nje kwexesha lokuchuma kwaye esijolise ekuxhaseni umbungu kwaye sithande ukukhulelwa, oku kuba kukhuthaza ukuveliswa kwehomoni ezithanda ukuqina kwe-endometrium, ukwenza- ilungele ukufakwa kombungu kwisibeleko.

Ukwenziwa kwe-corpus luteum kwenzeka kwinqanaba lokugqibela lokuya exesheni, okwaziwa ngokuba sisigaba se-luteal, kwaye kuhlala umndilili weentsuku ezili-11 ukuya kwezili-16, ezinokwahluka ngokwamabhinqa kunye nokuhamba rhoqo komjikelo. Emva kweli xesha, ukuba akukho kuchumisa kunye / okanye ukumiliselwa, ukuveliswa kwehomoni yi-corpus luteum kuyancipha kwaye ukuya exesheni kuyenzeka.

Nangona kunjalo, ukuba ukuya exesheni akwenzeki emva kweentsuku ezili-16, kunokwenzeka ukuba bekukho ukukhulelwa, kuyacetyiswa ukuba kubekwe esweni ukubonakala kweempawu kunye neempawu, udibane nodokotela wezifo zabasetyhini kwaye wenze uvavanyo lokukhulelwa. Yazi imiqondiso yokuqala kunye neempawu zokukhulelwa.

Umsebenzi weCorpus luteum

I-corpus luteum sisakhiwo esakha kwi-ovary yabasetyhini kanye emva kokukhutshwa kwee-oocyte ngexesha lokuvuthwa kwaye owona msebenzi uphambili kukwenza ukuchumisa kunye nokufakwa kombungu kwisibeleko, kukhokelela ekukhulelweni.

Emva kwe-ovulation, i-corpus luteum iyaqhubeka nokukhula ngenxa ye-hormonal stimuli, ikakhulu evela kwihomoni ye-LH kunye ne-FSH, kwaye ikhuphe i-estrogen kunye neprogesterone, ikakhulu kubungakanani obukhulu, eyihomoni inoxanduva lokugcina iimeko ze-endometrium yokukhulelwa okunokwenzeka.

Isigaba se-luteal sithatha i-avareji yeentsuku ezili-11 ukuya kwezi-16 kwaye ukuba ukukhulelwa akwenzeki, i-corpus luteum iyawohloka kwaye yehle ngobukhulu, inika umzimba owophayo kwaye emva koko ibe sisihlunu esibomvu esibizwa ngokuba ngumzimba omhlophe. Ngenxa yokonakala kwe-corpus luteum, ukuveliswa kwe-estrogen kunye neprogesterone kuyehla, kunika ithuba lokuya exesheni kunye nokupheliswa kwebala le-endometrium. Bona ezinye iinkcukacha zendlela osebenza ngayo umjikelo wokuya esikhathini.

Ubudlelwane phakathi kwe-corpus luteum kunye nokukhulelwa

Ukuba ukukhulelwa kwenzeka, iiseli eziza kukhulisa umbungu, ziqala ukukhupha ihomoni ebizwa ngokuba yi-chorionic gonadotropin, hCG, eyihomoni efunyanwa kumchamo okanye egazini xa kusenziwa uvavanyo lokukhulelwa.

Ihomoni ye-hCG inesenzo esifanayo kwi-LH kwaye iya kuvuselela i-corpus luteum ukuba iphuhle, iyithintele ekubeni ihlaziye kwaye iyikhuthaze ukuba ikhuphe i-estrogen kunye neprogesterone, ezibaluleke kakhulu kwiihormone zokugcina iimeko ze-endometrium.

Malunga neveki yesi-7 yokukhulelwa, yiplacenta eqala ukuvelisa iprogesterone kunye nee-estrogens, ngokuthe ngcembe ithathe indawo yomsebenzi wecorpus luteum kwaye ibangele ukuba yehle malunga neveki ye-12 yokukhulelwa.