Spermatogenesis: ihe ọ bụ na otu esi amalite n'ụzọ

Ndinaya

• Isi nke spermatogenesis
• 1. Germinative adọ
• 2. Osisi uto
• 3. Ripening adọ
• 4. Ọdịiche dị iche
• Kedu otu esi achịkwa spermatogenesis

Spermatogenesis kwekọrọ na usoro nke ịmepụta spam, nke bụ akụkụ nwoke maka ịmị akwa. Usoro a na - ebido na afọ iri na atọ, na - aga n'ihu n'oge ndụ nwoke niile ma na - agbadata na nká.

Spermatogenesis bụ usoro nke homonụ na-achịkwa nke ọma, dịka testosterone, hormone luteinizing (LH) na follicle na-akpali akpali (FSH). Usoro a na-eme kwa ụbọchị, na-emepụta ọtụtụ puku spam kwa ụbọchị, nke a na-echekwa na epididymis mgbe emepụtara ya na testis.

Isi nke spermatogenesis

Spermatogenesis bụ usoro dị mgbagwoju anya nke dị n’agbata ụbọchị 60 na 80 ma nwee ike kewaa ya n’ụzọ ole na ole:

1. Germinative adọ

Akuku nke germinative bu uzo izizi nke spermatogenesis ma na eme mgbe mkpụrụ ndụ nje nke oge ẹmbrayo na-aga n’ọkpụkpụ ọbara, ebe ha na-anọgide na-arụ ọrụ na akabeghị aka, a na-akpọ ha spermatogonias.

Mgbe nwatakịrị nwoke tozuru etozu, spam, n'okpuru mmetụta nke homonụ na sel Sertoli, nke dị n'ime testis, na-etolitewanye ike site na nkewa sel (mitosis) ma na-ebute spermatocytes bụ isi.

2. Osisi uto

Isi spermatocytes nke e guzobere na germinative phase na-abawanye na nha ma na-enwe usoro nke meiosis, nke mere na mkpụrụ ndụ ihe nketa ha na-emegharị, na-aghọ nke a maara dị ka spermatocytes nke abụọ.

3. Ripening adọ

Mgbe e guzobere spermatocyte nke abụọ, usoro ntozu oke na-ewere ọnọdụ iji nye spermatoid site na nkewa meiotic.

4. Ọdịiche dị iche

Kwekọrọ na oge mgbanwe nke spam n'ime spam, nke na-ewe ihe dịka ụbọchị 21. N'ime oge dị iche, nke nwekwara ike ịkpọ spermiogenesis, etolite ihe abụọ dị mkpa:

• Acrosome: ọ bụ ihe owuwu dị na isi spam nke nwere ọtụtụ enzymes ma na-ekwe ka spam banye n'ime akwa nwanyị;
• Ihe otiti: Ọdịdị nke na-enye ohere ịmegharị spam.

N'agbanyeghị na inwe ọkọlọtọ, spam a kpụrụ akpụ enweghị ikike ọ bụla ruo mgbe ha gafere epididymis, na-enweta motility na ikike njikọ nwoke na nwanyị n'etiti awa 18 na 24.

Kedu otu esi achịkwa spermatogenesis

Spermatogenesis na-achịkwa ọtụtụ homonụ na-akwadoghị mmepe nke akụkụ nwoke na nwanyị, kamakwa mmepụta spam. Otu n'ime homonụ kachasị bụ testosterone, nke bụ hormone nke mkpụrụ ndụ Leydig mepụtara, nke bụ mkpụrụ ndụ dị na testis.

Na mgbakwunye na testosterone, luteinizing homonụ (LH) na follicle na-akpali akpali (FSH) dịkwa ezigbo mkpa maka mmepụta spam, dịka ha na-akpali mkpụrụ ndụ Leydig iji mepụta testosterone na sel Sertoli, nke mere na enwere mgbanwe nke spermatozoa na spermatozoa.

Ghọta otu usoro hormonal nke usoro ọmụmụ nwoke si arụ ọrụ.