Testicule - yintoni na? Ulwakhiwo kunye nokusebenza kwamathambo omzimba

Iingqungquthela zidla ngokuba zii-testes zamadoda - inxalenye ebalulekileyo yombutho wesilisa kunye nenkqubo yokuzala ngokukodwa.

Kwixesha la mandulo, xa umntu efunga ukuba uya kuthetha kuphela inyaniso, wathintela amanqina akhe. Ukuba indoda yayineendwangu zomabini zombini, ke le nto yayisayine into ebalulekileyo yobuninzi bayo. Abantu abaninzi banomdla kulo mbuzo: "Testicule - yintoni na?". Makhe sijonge kweli nqaku.

Amaqabunga ahlala ehlukeneyo kunye nomhlaba kwaye ahlala kwisigxina se-scrotum. Ngamnye wabo uhlanganiswe ngeebhokhwe ezikhethekileyo. Zizo izakhiwo ezizodwa kunye nezidumbu zemisipha. Kukho kuzo inkqubo yokwenziwa kwe-spermatogenesis. I-Spermatozoa evuthiweyo, iya kwiifowuni, ize ixelwe ngexesha lokunyuka.

Inqaku elithandekayo

Ezinye i-asymmetry yamathambo emadodeni ngumgangatho oqhelekileyo. Okokuqhelekileyo, akukho nto inokukhathazeka ngayo. Ayikho nhlobo into echaphazelayo ukuzala komntu. Iingcali zenzululwazi zikholelwa ukuba le-asymmetry ingaba yindlela yokukhusela, eyanciphisa umngcipheko weentlungu zamathambo zombini. Nangona abameli abaninzi besigxina esinamandla sabantu banoxhala, banakho konke okulungileyo kwaye yonke into isebenza ngokuchanekileyo.

Ngokuqhelekileyo kukho amadoda anamava ngenxa yokuba enye itekisi inokuba yinto enkulu kunomnye. Kodwa amava afana nawo. Ukuhluke ngobukhulu bee-testicles - into eqhelekileyo. Isisindo sawo sinokuhluka ukusuka kuma-25 ukuya kuma-50 amagremu.

Ngoko, itekisi - yintoni na? Unempembelelo enjani kwinkqubo ye-spermatogenesis kumzimba wesilisa? Ngale nto.

Amathambo ayigonads yamadoda, eyenza i-testosterone kunye nesidoda.

Iqondo lokushisa elona lifanelekileyo kwaye liyimfuneko kwinkqubo ye-spermatogenesis iyaqinisekiswa ngokubekwa kwetekisi kwiprotum yindoda. Ukugqoka iimpahla zangaphantsi ezinqinileyo kunye ezinamaqabunga, kunye nokusetyenziswa kakubi kweendawo zokuhlambela kwiibhati kunye ne-saunas kunokubangela ukungabikho. Ukongezelela, izixhobo ezikhoyo zanamhlanje, ezifana nezihlalo zemoto ezishushu, zinokuchaphazela impilo yindoda. Kungcono ukuba ungasebenzisi kakubi le ntuthuzelo.

Ekufezeni izifundo zemisebenzi ebalulekileyo yee testes zendoda, unokuqokelela ulwazi oluxabisekileyo olunxulumene nokunyangwa kwengqondo. Ukuba uhlalutya ukwakhiwa kwesidoda, unokufumana izizathu ezahlukahlukeneyo zokungabikho kwindoda. Ukuxilongwa ngokukhawuleza, kwakhona kukuvumela ukuba uthathe amanyathelo afanelekileyo kunyango.

Ulwakhiwo, i-anatomy kunye nobukhulu

Amathambo amancinci anzima kunzima. Oku kubangelwe injongo yabo ebalulekileyo. Bahlukanisa umgca ophantsi, ophezulu, ophezulu emva kwendawo kunye nendawo ephakathi. Emuva, epididymis adjoins.

Amaqabunga amanyathelo adibeneyo, anesimo se-oval esinezantsi. Ngaphambi kokuba uhlalutyo lomzimba olupheleleyo lube khona, ii-appendages kunye nee-testes zikhula ngokukhawuleza, kodwa ke uphuhliso lwabo lukhawuleza kakhulu.

Ikhutshwe ngegobolondo, apho izahlulo zihamba khona. Bahlula iqela kwiilayilethi - nganye iqulethe iziqwenga ezingama-270.

Ulwakhiwo kunye nomsebenzi wee testes

• Ngamanye amabhola angama-270 aqulethwe kumgama omnye ukuya kumathathu weendlela zokuzikhusela kunye nobude obungama-cmentimitha angama-75 (yinkqubo ye-spermatogenesis eyenzeka kuzo). Ubude obude bee-tubules zifikelele kumitha engama-500. Ubume be-canal buqondiswe yi-mediastinum, kwaye amadada aya kudlula kwinethiwekhi yeesenteleli, ekhoyo kwi-plexus ye-testicular.

• Iziteshi ze-plexus zineendlela ezili-15 zokunyamezela, zifaka iifowendages zamathambo (epididymis), ngaloo ndlela zenza intloko. Ikhono lokuchumisa livela kwi-spermatozoa kuphela emva kokuba badlule epididymis.

• Izithuba eziqhelekileyo zihamba ngokukhawuleza kwi-duct, ebonisa imbewu. I-def deferens yodwa yenza inxalenye yentambo. Le duct iya kwi-bladder ngokusebenzisa amathanga amakhulu amaninzi. Kusemgangathweni wesigcawu sokuthi ezi zimbini zibhekiselele kwizinga eliphezulu.

• I-deferens (i-testicle yamadoda) ivuleka kancane ekugqibeleni, eyenza i-ejaculatory conduit. Ubude bayo buba malunga no-centimitha ezimbini. Iwela iprotrate kwaye ivule ngokuvulwa okuncinci kwi-tubercle ye-canal, ejoliswe ekukhululeni umchamo.

Ngoku kuyacaca ukuba yiyiphi i-testicles. Unesibonelelo esiphezulu segazi, ngokubhekisele kuyo ukuthengisana okwaneleyo kweemetabolites kunye namahomoni. Kwakhona kukuvumela ukuba ulungise utshintshi. Ukushisa kwamathambo kumntu kuncinci kunobungqingili obuqhelekileyo bomzimba wonke, malunga neesigidi esisiqingatha. Kwaye ukushisa kwesikhumba ephakamileyo kwiprotamu kuncinci - ngee-degrees ezintathu kunye nesiqingatha.

Siyabulela kule ndlela elandelayo, kubakho ukugcina ubushushu obuncinane be-scrotum kunye namathambo ngaphakathi kuyo:

1. Ulusu le-scrotum lincinci kakhulu.

2. I-plexus ethile ye-vascular, apho iingqungquthela eziphakathi kwee-loble ze-loble zihambelana nemigodi.

Isakhiwo se-testis yesilisa kwinqanaba leselula

I-14% yevolumu yenani lihlala lihlaselwe ngamanqamzana e-fat interstitial. Yona, iqulethe i-cell cell connection, i-Leydig cell, i-capillaries, izicubu ezinxibelelwano, iziqwenga ze-macrophages.

I-70% yomsindo opheleleyo wee-testes zamadoda uhlala emigodini yemigodi, equlethwe ngeentlobo ezintathu zeeseti ze-somatic: iiseli zeprabhubula, iiseli ze-sertoli, iiseli ze-spermatogenesis.

Umlenze omhlophe. ITestile kunye naye. Itholakala kwii-visceral and parietal sheets. Bonke babumba igobolthi ehambelana nemigangatho yemvelo yemisipha. Ezi zixhobo zibanamathela ngokufanelekileyo ngongxoweni, ngaloo ndlela ziphepha iingcamango.

Umlenze omhlophe usekufutshane nomda we-testicular ophezulu kwaye unesakhiwo esinyanisiweyo esithile. Ukusuka kule nkcenkceshe, i-septa eyenza iifisi ezixhumeneyo ziyahamba. Bahlula i-testicle kwinani elikhulu lama-lobules.

Ubukhulu beetekisi

Amaqanda omntu oqhelekileyo makangabikho ngaphantsi kwequla.

Ubukhulu obuqhelekileyo bubungamamitha amane ubude nobude bamamitha amathathu ububanzi.

Kukho imeko apho amadoda akhathazeka ngabo ngobukhulu kunye nendawo yabo yamathambo. Ukuba ahluke omnye komnye ngokungabi ngaphezu kweyentimitha enye, kwaye akukho zintlungu, ngoko akukho nto ibangela ukukhathazeka. Kodwa ukuba ukuphambuka kungaphezu kweyentimitha enye, kukulungele ukuqhagamshelana neengcali ngokukhawuleza.

Iyintoni umphumo wobungakanani bendidi edibeneyo?

Kukho uluvo lokuba amandla okwenziwa kwamathambo atholakala kubukhulu bawo. Oku kuyingxenye yinyani. Ngokomzekelo, cinga i-chimpanzee. Ubungakanani bamathambo abo bukhulu kunabo bama-gorilla, kwaye ama-chimpanzi anesondo esiningi kakhulu kunezo gorilla. Nangona kunjalo, izazinzulu azizange ziqhube uphando ngqo kule ndawo. Akusiyo imfihlo yokuba amadoda amnyama anamaqhekeza aphindwe kabini njengamathambo aseAsia amadoda. Kodwa ukuba uthelekisa ukukwazi ukutshiza amaAsia kunye nabamnyama, kuyacaca ukuba ukukhulelwa akuxhomeki kubukhulu bamathambo kumadoda.

Umsebenzi oyintloko wamathambo

Umsebenzi owona mkhulu wee testes yinkqubo yokuvelisa i-hormone yesini kunye nezinye izinto ezisebenzayo, kunye nemisebenzi ye-endocrine kunye nemveliso. Ukwenziwa kwe-hormone testosterone yinjongo ephambili yomsebenzi we-endocrine. Egazini lomzimba, livela kumathambo.

Benza umsebenzi obaluleke kakhulu wegqeba le-secretory-banikeza amahomoni aveliswa egazini. Ukongeza, banomsebenzi wokuvalwa kwangaphakathi - ukuvelisa nokususa iseli zesini.

Yintoni inqanaba le testosterone emzimbeni elichaphazelayo?

• Ngaphantsi kwefuthe le-testosterone, umzimba ukhula ngokubhekiselele kumhlobo wesintu oqhelekileyo: isakhiwo esikhethekileyo se-larynx, ukwanda kobunzima beentambo zamagama kubantu, kunye neenwele.

• Ukukhula kunye nophuhliso olufanelekileyo lweefowunethi kunye neprotrate, izibilini zesilisa.

• Ukuphuhliswa kwemisipha yomzimba.

• Ukwakhiwa komntu we-libido.

• Ukukhula kunye nophuhliso olufanelekileyo lwama-genitalia angaphandle.

Sasihlolisisa ngokupheleleyo itekisi. Yintoni eyaziwayo ngoku.