Yini i-corpus luteum futhi buhlobene kanjani nokukhulelwa

-Delile

• Umsebenzi we-Corpus luteum
• Ubudlelwano phakathi kwe-corpus luteum nokukhulelwa

I-corpus luteum, eyaziwa nangokuthi umzimba ophuzi, iyisakhiwo esakha ngokushesha ngemuva kwesikhathi esivundile futhi esihlose ukuxhasa umbungu futhi sithande ukukhulelwa, lokhu ngoba kukhuthaza ukukhiqizwa kwamahomoni athanda ukuqina kwe-endometrium, okwenza - elungele ukufakwa kombungu esibelethweni.

Ukwakheka kwe-corpus luteum kwenzeka esigabeni sokugcina somjikelezo wokuya esikhathini, okwaziwa ngokuthi isigaba se-luteal, futhi kuthatha isilinganiso sezinsuku eziyi-11 kuya kwezingu-16, ezingahluka ngokuya kowesifazane nokujwayeleka komjikelezo. Ngemuva kwalesi sikhathi, uma kungekho ukuvundiswa kanye / noma ukufakelwa, ukukhiqizwa kwamahomoni yi-corpus luteum kuyehla nokuya esikhathini.

Kodwa-ke, uma ukuya esikhathini kungenzeki ngemuva kwezinsuku eziyi-16, kungenzeka ukuthi kube nokukhulelwa, kunconywa ukuqapha ukubonakala kwezimpawu nezimpawu, uthintane nodokotela wezifo zabesifazane futhi wenze ukuhlolwa kokukhulelwa. Yazi izimpawu zokuqala nezimpawu zokukhulelwa.

Umsebenzi we-Corpus luteum

I-corpus luteum yisakhiwo esakha esibelethweni sowesifazane ngemuva nje kokukhishwa kwama-oocyte ngesikhathi sokuvuthwa futhi umsebenzi wawo omkhulu ukuvumela ukufakwa kokufakelwa kanye nokufakwa kombungu ovundisiwe esibelethweni, okuholela ekukhulelweni.

Ngemuva kwe-ovulation, i-corpus luteum iyaqhubeka nokukhula ngenxa yesikhuthazi se-hormonal, ikakhulu esivela kuma-hormone i-LH ne-FSH, futhi ikhipha i-estrogen ne-progesterone, ikakhulukazi ngobuningi obukhulu, okuyi-hormone ebhekele ukugcina izimo ze-endometrium yokukhulelwa okungenzeka.

Isigaba se-luteal sithatha isilinganiso sezinsuku eziyi-11 kuya kwezingu-16 futhi uma ukukhulelwa kungenzeki, i-corpus luteum iyawohloka futhi yehle ngosayizi, ikhiphe umzimba owophayo bese kulandela isicubu esibomvu esibizwa ngomzimba omhlophe. Ngokuwohloka kwe-corpus luteum, ukukhiqizwa kwe-estrogen ne-progesterone kuyehla, okwenza kube nokuya esikhathini nokuqeda ulwelwesi lwe-endometrium. Bona imininingwane eminingi yokuthi umjikelezo wokuya esikhathini usebenza kanjani.

Ubudlelwano phakathi kwe-corpus luteum nokukhulelwa

Uma kwenzeka ukukhulelwa, amaseli azokhulisa umbungu, aqala ukukhipha i-hormone ebizwa nge-chorionic gonadotropin, i-hCG, eyi-hormone etholakala emchameni noma egazini lapho kwenziwa ukuhlolwa kokukhulelwa.

Ihomoni i-hCG inesenzo esifanayo ne-LH futhi izoshukumisa i-corpus luteum ukuba iyithuthukise, iyivimbele ekuwohlokeni nasekuyigqugquzeleni ukuthi ikhiphe i-estrogen ne-progesterone, okungama-hormone abaluleke kakhulu ekugcineni izimo ze-endometrium.

Cishe ngesonto lesi-7 lokukhulelwa, yi-placenta eqala ukukhiqiza i-progesterone nama-estrogens, kancane kancane ithathe isikhundla somsebenzi we-corpus luteum futhi ibangele ukuthi yehle cishe ngesonto le-12 lokukhulelwa.