Maselo Sertoli (sustentotsit): Ntchito

The akuluakulu kubalana amuna, wotchedwa testes. Iwo amapangidwa kugonana maselo - umuna ndi mahomoni, monga testosterone. The anatomical ndi histological Kapangidwe ka testes amuna zovuta, monga matupi awa kugwira ntchito zingapo. Ananyamula spermatogenesis - mapangidwe ndi kukula kwa maselo nyongolosi. machende mundisonyeze endocrine ntchito. Iwo zili wapadera thumba cutaneous - scrotum. Pali anakhalabe kutentha wapadera, zomwe ndi pang'ono poyerekeza ndi mbali zina za thupi.

Testes ndi mawonekedwe elliptical, kukula wawo uli pafupi 4 cm yaitali ndi 3 lonse. Mwachibadwa, pakhoza kukhala asymmetry pang'ono gonads lapansi. Aliyense chipolopolo dzira lagawidwa ndi partitions mu kuchuluka magawo. Iwo ali convoluted m'ngalande seminiferous kupanga testicular plexus. ducts ake efferent kulowa epididymis. Pali aumbike zambiri za umuna - mutu. Kenako - njira zina mu deferens vas, amene anatumiza kwa chikhodzodzo. Kuwonjezera apo, kukuza ndi kudutsa limba zina za ziwalo zoberekera za mwamuna - prostate. Zisanachitike izi, njira aumbike mwa ritsa ejaculatory, amene ali ndi kubwereketsa m'dera la mkodzo wa.

Histological Kapangidwe ka machende kwa amuna

Male gonads zigwirizana chingwe spermatic, ndi minofu interstitial. Kunja chimakwirira awo albuginea. Iye ukufanizidwa ndi wandiweyani connective minofu. Albuginea spliced ndi thupi. Mbali izo thickens kupanga mediastinum testis. Pa nthawi imeneyi, minofu connective lagawidwa ndi kuchuluka kwa chingwe. Iwo apanga lobules mkati amene ali convoluted tubules. Iwo ankaimira zotsatirazi mayunitsi structural:

1. Sertoli maselo - sustentotsit. Pamodzi ndi zinthu zina zopezeka mu mapangidwe magazi testis chotchinga.
2. Maselo, imene ikuchitika spermatogenesis.
3. Myofibroblasts. dzina lawo ena - maselo peritubular. Ntchito yaikulu ya myofibroblast - ndi kuonetsetsa Kukwezeleza madzimadzi seminal a ngalande crimped.

Komanso, kapangidwe ka dzira ali minofu interstitial. Ndi pafupifupi 15%. Interstitial minofu ukufanizidwa ndi zinthu monga maselo Leydig, macrophages, capillaries ndi zina zotero. D. Ngati njira convoluted ali ndi udindo mapangidwe maselo kugonana, pali mapangidwe ndi kupanga timadzi wamwamuna.

Sertoli maselo: kapangidwe

maselo Sertoli ndi mawonekedwe elongated. kukula wawo uli pafupi 20-40 microns. Izi ndi mwachilungamo lalikulu structural mayunitsi zosiyana amatchedwa akuthandiza maselo. Mu cytoplasm maselo amenewa lili organelles ambiri. Pakati pawo:

1. Kore. Ilinso ndi osasamba, nthawizina - peyala woboola pakati. The chromatin mu phata la ndi anagawira omangidwa.
2. Yosalala ndi akhakula EPS. The choyamba - ndi udindo yopanga mahomoni steroid, wachiwiri - amapereka mapuloteni kaphatikizidwe.
3. Golgi zida. Ndiyamika organelle ichi, pali komaliza kaphatikizidwe, yosungirako ndi kuchotsa katundu.
4. Lysosomes - ali nawo phagocytosis.
5. Microfilaments. organelles izi zimakhudzidwa kusasitsa ya umuna.

Komanso, mukachipinda lili Sertoli mafuta kulolerana. m'munsi Sustentotsitov lili mpanda wa tubules seminiferous, ndi nsonga - nkhope mu lumen awo.

Sertoli maselo: Ntchito

Sertoli selo ndi chimodzi pa kupanga convoluted seminiferous tubules. Ndi zofunika kwambiri monga kumatanthauza ndondomeko spermatogenesis, ndi kaphatikizidwe mahomoni wamwamuna. Pali ntchito zotsatirazi maselo Sertoli:

1. Trophic. Zimenezi zimathandiza kupereka maselo mwana umuna ndi mpweya ndi zakudya.
2. Zozitetezera. Mukachipinda ali cytoplasm lysosomes - organelles nawo phagocytosis. Iwo kuyamwa ndi akonzanso mankhwala kuwonongeka Mwachitsanzo, makombo a spermatids akufa.
3. Kupereka magazi testis chotchinga. nchito imeneyi anaonetsetsa ndi pafupi kukhudzana selo foni. akutilola anafunika nadzawasankhula maselo mwamuna kugonana kwa magazi ndi zinthu uli m'bukuli. Komanso, kumathandiza malowedwe a antigens umuna mu madzi. Izi amachepetsa chiopsezo kukhala autoimmune kutupa.
4. Endocrine ntchito. maselo Sertoli zimakhudzidwa mapangidwe mahomoni kugonana.

Sustentotsity koyenera kuti mapangidwe ndi kusamalira malo apadera umuna kukhala bwino. Amadziwika kuti zikuchokera amaayoni maselo Sertoli amasiyana ndi madzi a m'magazi. ndende ndi sodium n'chozama, ndipo okhutira potassium M'malo mwake, kuchuluka. Komanso, mu Sertoli maselo lithe zinthu zambiri biologically yogwira. Pakati pawo - ndi prostaglandins, cytokines, follistatin, kukula zinthu ndi kugawikana, opioids, etc ...

Ntchito ndi kapangidwe ka maselo Leydig

maselo Leydig ndi gawo testicular interstitial minofu. kukula wawo uli pafupi 20 microns. The gonads wamwamuna ali oposa 200 * June ¹⁰ Leydig maselo. Mbali structural modzi wa izi ndi lalikulu chowulungika phata ndi foamy cytoplasm. Iwo ali vacuoles munali mapuloteni lipofuscin. Iwo aumbike mwa oipa kunyama mu nthawi kaphatikizidwe mahomoni steroid. Komanso, cytoplasm ali 1 kapena 2 nucleolus munali RNA ndi mapuloteni. Ntchito yaikulu ya maselo Leydig - ndi testosterone. Komanso, iwo ali nawo kaphatikizidwe activin. mankhwala kumapangitsa yopanga FSH mu ubongo.

Kodi Sertoli selo syndrome?

Amodzi mwa matenda osowa cha ziwalo zoberekera za mwamuna ndi Sertoli syndrome selo. Chiwonetsero chachikulu cha matenda ankaona kuti osabereka. matenda ndi wachibale anomalies kobadwa nako, chifukwa anati aplasia (a kuchepetsa kwambiri kapena kusapezeka) ya embryonic testicular minofu. Chifukwa cha wakuswa uyu wa tubules seminiferous kukhala. Amafotokozera yekha kuti si kuonongeka - ndi Sertoli selo. dzina lina la matenda - ndi matenda del CASTILLO. Part maselo Sertoli akadali amaloŵamo alibe, ambiri a iwo - n'zabwinobwino. Ngakhale zili chomwechi, epithelium wa tubules ndi atrophied. Spermatozoa mu kudwala izi si anapanga.

Kuwonongeka kwa ntchito ya maselo Leydig

Ngati kuwononga maselo Leydig akusokoneza ntchito yawo yaikulu - testosterone kaphatikizidwe. Chifukwa, zizindikiro monga:

1. Yafupika minofu misa.
2. Pakalibe makhalidwe sekondale kugonana (kukula kwa thupi tsitsi la mtundu wamwamuna, mawu).
3. Kulakwila libido.
4. Utachepa mafupa.