Ukhiye Womthondo Ukuphi Futhi Unemisebenzi Miphi?

Ilungu lobulili liyithuluzi elisemzimbeni ngaphandle emzimbeni wesilisa eliyingxenye yohlelo lokuzala kanye nohlelo lomchamo. Indima yelungu lobulili ekuzaleni wukuletha isidoda emzimbeni womuntu wesifazane ngesikhathi socansi [1]. Uma sesingaphakathi, uhambo lwesidoda emzimbeni wesifazane lubandakanya ukudlula emlonyeni wesibeletho, esibelethweni, nasemithanjeni yamaqanda (ama-fallopian tubes) lufuna iqanda. Indima yelungu lobulili emchamweni ihilela ukukhipha umchamo esinyeni siye ngaphandle komzimba [2].

Ilungu lobulili linezingxenye ezahlukene, futhi ingxenye ngayinye inomsebenzi othile ekusebenzeni kwelungu lobulili. Izingxenye zelungu lobulili zifaka i-glans, umphini, nempande. Kule ndatshana, sizokhomba ukuthi umphini, i-glans nempande yelungu lobulili zikuphi nokuthi imiphi imisebenzi yazo ekusebenzeni kwelungu lobulili.

Yini Ilungu Lobulili?

Ilungu lobulili liyithuluzi eliyinkimbinkimbi elisemzimbeni ngaphandle, elitholakala ngaphezulu kwezende (testes). Liyithuluzi elibalulekile ohlelweni lokuzala kanye nohlelo lomchamo. Ukuma kwelungu lobulili lomuntu wesilisa kwakhelwe ngokukhethekile ukuze kuqhutshekwe umsebenzi wokuzalana.

Lapho uthola ukushukunyiswa ngokocansi, izicubu ezithambile ngaphakathi kwelungu lobulili zigcwala igazi, bese ilungu lobulili liyaqina (liqubuke) [3]. Lokhu kuqubuka kwenza kube nokwethulwa kwesidoda somuntu wesilisa emzimbeni womuntu wesifazane.

Indima yelungu lobulili emchamweni ilula uma iqhathaniswa ngoba ihilela nje ukusebenza njengomgudu wokukhipha umchamo.

I-anatomy yepenisi

Izingxenye zelungu lobulili zingahlukaniswa ngokomzimba zibe izigaba ezintathu ezinkulu. Lezi yilezi:

• I-glans (Ikhanda): I-glans, eyaziwa kabanzi njengekhanda, iwuphondo oluyindilinga ekugcineni kwelungu lobulili. Iqukethe imithambo-yemizwa yokuzwa, okuyenze izwe kakhulu futhi ibaluleke ekuthokoziseni ngokocansi [4]. Umgodi we-urethra nawo ukhona ku-glans lapho umchamo uphuma khona emzimbeni.
• Umphini (Umzimba): Ingxenye ende yelungu lobulili phakathi kwe-glans nesisekelo ibizwa ngomphini welungu lobulili noma umzimba welungu lobulili [5]. Lena yingxenye egcwala igazi bese liqubuka, inikeze ukusekelwa kwesakhiwo selungu lobulili ngesikhathi sokuzalana.
• ImpandeImpande iyingxenye engezansi kakhulu yelungu lobulili (ipipi) eqinisa umphini welungu lobulili endaweni ye-pelvis. Isebenza njengokusekela futhi ivumele ukunyakaza kwelungu lobulili.

Isakhiwo sentonga yepenisi

Ingxenye yentonga emzimbeni ngokomumo nangokusebenza iyingxenye ebalulekile yephinisi. Umzimba wepenisi ubamba ipenisi libe sesimeni salo eseluliwe, okwenza libe libalulekile ekuqineneni kwepenisi nasemsebenzini wocansi.

Nazi ezinye izingxenye esakhiweni somzimba wepenisi:

• Izicubu ezisentongeni: Umzimba wepenisi wakhiwe izinhlobo ezimbili zezicubu – i-corpus cavernosum ne-corpus spongiosum [6]. I-corpus cavernosum iyizicubu ezitholakala phezulu kwentonga.

Ngakolunye uhlangothi, i-corpus spongiosum itholakala endaweni engezansi, izungeze i-urethra. Lezi zicubu zisebenza njengendawo yokugcina igazi ngesikhathi sokucasuka kocansi, okubangela ukuvuvukala kwepenisi futhi kwenze ipenisi likwazi ukusebenzisa ucansi [3].

• Imithambo yegazi nezinzwa: Umzimba wepenisi uqukethe imithambo eminingi yegazi kanye nezinzwa ezimsiza ukuba wenze imisebenzi yawo. Imithambo yegazi ivumela ukugeleza kwegazi ezicutshini zentonga ngesikhathi sokuvuvukala. Izinzwa zidlulisela ukucasuka komzimba ebuchosheni, okunikela enjabulweni nasempendulweni yocansi.
• Isikhumba nokuguquguquka: Izicubu ezithambile zentonga zizungezwe isikhumba sangaphandle, esivumela ukucindezeleka nokunwetshwa kwepenisi. Isikhumba esimboza izicubu ezithambile siphinde sibe nemithambo yezinzwa eyandisa injabulo yocansi.

Indima yentonga ekuzaleni

Intonga yepenisi inomsebenzi obalulekile emsebenzini wocansi nasezinhlanganweni zokuzala. Nansi indlela umzimba wepenisi osiza ngayo emsebenzini wepenisi futhi wenze inqubo yokuzalana yenzeke:

1. Ukuqina kwepenisi: Ipenisi liyaqina ngenxa yezicubu ezisemzimbeni wepenisi. Uma uvuswa ocansini, igazi ligcwala ezicutshini zentonga, okubangela ukuthi intonga iqine futhi yande [3]. Lokhu kuvuvukala kwelunga kubalulekile ekungeneni ngesikhathi socansi, okwenza kube nokwethulwa kwesidoda sendoda.
2. Ukulethwa kwezinye: Isakhiwo sentonga siqondisa isidoda sidlule ku-urethra ngesikhathi sokuchama kocansi. I-urethra liyishubhu elihamba phakathi kwentonga futhi elithwala isidoda liphume ngaphandle komzimba lapho indoda ifinyelela ocansini. Ukuqonda umehluko phakathi kwe-isidoda esinokuzala nesingenakuzala kubalulekile, njengoba ikhwalithi yesidoda ingawuthinta kakhulu amathuba okukhulelwa ngempumelelo.
3. Imizwa Yocansi: Ishafu iqukethe imiphetho eminingi yemizwa futhi inikela ekwandiseni injabulo yesikhathi socansi. Le mizwa iyingxenye ebalulekile yomsebenzi wocansi, esiza ukudala ukusondelana ngokomzwelo nangokwenyama.

Okubalulekile Ekugcineni

Ipenisi yisitho esiyinhloko sokuzalana kowesilisa futhi litholakala ngaphezu kwamasende, ngaphandle komzimba. Lihlanganisa izingxenye ezintathu ezinkulu, okungukuthi i-glans, ishafu, nezimpande. Abantu abasanda kujwayelana ne-anatomy yokuzala kowesilisa bangase babuze ukuthi ishafu yepenisi itholakala kuphi nokuthi yini indima yayo ekuzaleni.

Umzimba wepenisi uyindawo ende ephakathi kwekhanda (ithiphu) nempande yepenisi lendoda. Uqukethe izicubu ezigcwala igazi ukuze kubangele ukuvuthwa kwelungu, kanye nemithambo yegazi nemizwa. Ishafu yepenisi isiza ukuhambisa isidoda emzimbeni womuntu wesifazane ngesikhathi socansi futhi ithuthukise ulwazi locansi ngenxa yokuba khona kwemiphetho yemizwa eshafwini.

Imibuzo Evame Ukubuzwa

1. Yiziphi izitho ezisemphakathini wendawo yangasese wesilisa?

Izitho ezisemphakathini wendawo yangasese yesilisa noma ohlelweni lokuzalana lwesilisa zifaka ipenisi, amasende, ama-seminal vesicles, i-vas deferens, kanye ne-prostate gland.

2. Ishafu yepenisi inikela kanjani ekutheni ilungu liqine (ukuvuthwa kwelungu)?

Umzimba wepenisi uqukethe izicubu ezithambile noma izicubu ze-erectile ezigcwala igazi futhi zisize ukugcina ukuvuthwa kwelungu. Lo msebenzi womzimba wepenisi ubalulekile emsebenzini wocansi.

3. Uzizwa kanjani imizwa ngesikhathi somsebenzi wocansi?

Ungazizwa umuzwa wenjabulo ngesikhathi somsebenzi wocansi ngenxa yemizwa ekhona esikhunjeni selungu elimboza i-glans nomzimba.

Imithombo Esebenzisiwe

1. Institute for Quality and Efficiency in Health Care (IQWiG). (2022c, May 18). Ngokufingqiwe: Yini eyenziwa izitho zobulili zesilisa? InformedHealth.org - NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK525757/ 
2. Flores, J. L., Cortes, G. A., & Leslie, S. W. (2023, September 13). I-Physiology, Ukuchama. StatPearls - NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK562181/ 
3. Panchatsharam, P. K., Durland, J., & Zito, P. M. (2023c, May 1). I-Physiology, Ukuqina Kwelungu. StatPearls - NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK513278/ 
4. Sam, P., & LaGrange, C. A. (2023b, July 24). I-Anatomy, Isisu Ne-Pelvis, Ipenisi. StatPearls - NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK482236/ 
5. Wei, L., Zheng, L., Jiang, H., & Jiang, T. (2024). Umehluko phakathi kwe-glans neshafu yelungu lobulili besilisa: ukubuyekeza. Sexual Medicine Reviews. https://doi.org/10.1093/sxmrev/qeae019 
6. I-Anatomy Yelungu Eningiliziwe: Imininingwane Yesithombe - NCI Visuals Online. (n.d.). https://visualsonline.cancer.gov/details.cfm?imageid=11321