Gonads besimame besilisa

Ubulili nezindlala zomzimba womuntu enze eziningi imisebenzi ebalulekile: Ekunqumeni izici bokuphila phansi futhi banesibopho zokukhiqiza. Basuke izimpawu uhlobo okuxubile uketshezi, njengoba nayo iveza futhi amaseli enzalo, futhi hormone athile. gonads kwabesifazane nabesilisa babe ezinye izici ezikhethekile. Nokho, ukulawulwa imisebenzi eyenziwa nezindlala gonadotropic hormone pituitary.

Owesilisa ubulili indlala. Owesilisa ubulili nezindlala Zimelela testes, okuyinto ekhiqiza isidoda (amaseli enzalo), kanye androgens (hormone wesilisa ethize).

spermatogenesis izinqubo zenzeka okuthiwa Leydig amaseli. Ukwakheka isidoda cishe njalo - eziqala ukuthomba nesiphetho engu 50 - 60 iminyaka (lokhu idatha ngabanye), lapho testes yoma, futhi umsebenzi wabo bokuphila onakala kancane. Mature lwegciwane lamaseli epididymis.

isidoda Male siqukethe ekhanda, emqaleni nasemhlane, umsila futhi msila, ngalo Ungahambisa. Amaseli has okubizwa ngokuthi ikhanda acrosome, equkethe enzyme ezibhubhisa igobolondo neqanda. Esikhathini insikazi isidoda emomozini kungenzeka asebenzayo kufikela kuzinsuku ezingu-6.

Ngokuqondene hormone ocansini, ebaluleke kakhulu kuba imikhiqizo testosterone kulawulwa luteinizing i-hormone pituitary. Lokhu hormone ebaluleke kakhulu ekuthuthukisweni yomzimba zesilisa, njengoba unesibopho:

• nokwenyuka ukuthuthukiswa esebenzayo kwezitho zokuzala ngesikhathi sokuthomba;
• ukukhula komzimba izinwele ohlobo besilisa;
• ukushintsha e ithoni kwezwi;
• ukukhula okunamandla nokuthuthukiswa kwemisipha;
• ithambo kumiswa;
• ukubukeka yokukhangwa abobulili obuhlukile;

Njengoba ubona, the nezindlala ocansini kwabesilisa imisebenzi ebalulekile ngempela. Ngokwesibonelo, uma ukwephulwa yenqubo spermatogenesis umuntu ngeke zikwazi ukuveza inzalo. Futhi ngenxa yokuntula hormone ocansini kukhulisa okuthiwa syndrome - indoda waphawula sebethule fat amabele, izinqulu nezinqe, izitho zomzimba sikhule uhlasela, umthondo kukhona ampofu, ukuntula isifiso sobulili, ukuthuthukisa kwezinso ngokwengqondo.

Female ubulili nezindlala. I gonads abesifazane bamelela amaqanda lapho iqanda ovuthiwe futhi kuhlelwe umqondo zesifazane hormone: estrogen futhi progesterone. esibelethweni ngamunye zesifazane siqukethe amabhola amabili: stroma futhi cortex.

follicle wesibeletho emazingeni ahlukahlukeneko wendlela nokuvuthwa asezindaweni cortex. Futhi uma inqubo kumiswa isidoda owesilisa okuqhubekayo, abesifazane wonke amaseli ubulili abekwa kakade phakathi ukuthuthukiswa sombungu. Ngenyanga ukuvuthwa iqanda elilodwa kuphela ukuthi ephula follicle futhi wehlela tube fallopian. Esikhundleni amafomu follicle le luteum Corpus, okuyinto ke iphenduka ibe mhlophe, kamuva eshicilelwe kusayithi esibelethweni uhlala isibanda encane.

umdlavuza zangasese kubantu besifazane, futhi ukukhiqiza ama-hormone athile progesterone futhi estrogen. Estrogens benezingane eziningi imisebenzi:

• banesibopho ukwanda bangaphandle zangaphakathi izitho zangasese ngesikhathi sokuthomba;
• pilosis kwakheka uhlobo besifazane;
• ukusheshisa ukuthuthukiswa kwe-nezindlala mammary;
• zivimbela bone ukukhula ubude;
• sikhuthaze izinqubo zamagama kwamafutha, okuyinto imali phezu esifubeni, emzimbeni, kwamathanga nezinqe - ikakhulukazi umzimba female;

Progesterone ezikhishwe luteum Corpus. umsebenzi Its main - iwukuba nokulungisa endometrium kwesibeletho ukwethulwa iqanda eselivundisiwe. Lokhu i-hormone sithinta nezindlala mammary, kubenze zigcwala.

Uma gonads abesifazane zingasebenzi kahle, igcwele ukungazali, imisiwe ukuthuthukiswa ngokobulili, ukuhlukumezeka kwengqondo.