Ukuqonda Umsebenzi Walo Ukusuka ku-Arousal ukuya kwi-Childbrith
Ubundlobongela be-muscular tube eyenza ukuhamba ukusuka ngaphandle komzimba kwisisu (isizalo). Ibhinqa linako ukutshintsha ubukhulu bokulala ngesondo kunye nokubonelela "isalathiso sokuzalwa" apho umntwana angakhululwa khona.
Ulwakhiwo lweVagina
Ibhinqa yenziwe ngamathambo, iifiber, imisipha, kunye neentsholongwane. Izicubu ze-mucosal zangaphandle zixhaswa ngoluhlu lweetekisi ezixhumeneyo ezisebenzisanayo ukuvelisa i-mucus ye-lubrication yamanzi.
Ngaphantsi kwezi zizinto eziluhlaza, ezinokuthi zenze isivumelwano kunye nokwandisa, zilandelwe olunye uluhlu lwamaqhina axhumeneyo awaziwa yi-adventitia.
Ubundlobongela bubekwe phakathi kwe-vulva (i-genitalia yangaphandle) kunye nomlomo wesibeleko (umhlathi omncinci, onjengezintamo ohlukanisa isisu kwisisu).
Isakhiwo esiqhelekileyo sesisini sisisilandela:
- Ukuvulwa kwesondo kulala phakathi kwe-anus kunye nokuvulwa kwe-urethra (apho umchamo uphuma umzimba). Izivulo zesisu kunye neengqumbo zikhuselwe libia.
- Ngaphantsi kwe-urethra uxoxwa yi-introitus, ebizwa ngokuba yi-vestibule okanye ukuvulwa kwesini.
- Umgudu wamanzi wesondo uhamba ukuya phezulu ukuya ngasemva, phakathi kwe-urethra ngaphambili kunye ne-rectum ngasemva.
- Njengoko siphelo esiphezulu segama lesini , i- ectocervix (inxalenye yangaphandle yomlomo wesibeleko) ixhamla ngokugqithiseleyo kumgca wesondo.
Ubude besini buyakwazi ukuhluka kwabesetyhini obudala abantwana abaphakathi kwama-2.5 intshi ukuya kuma-intshi ama-3.5 ngokuqhelekileyo.
Ngokwe-lubrication, izifihla zesisu zingakhula ngexesha lokuvuswa kwezesondo, ukukhulelwa, kunye nezigaba ezahlukeneyo zesisini. Ngexesha lomjikelezo wokuya esikhathini, i-membrane ye-mucous iya kutyhila kwaye ukubunjwa kwe-mucus kuya kutshintshwa ukuze kube lula ukulungiselela ukuchumisa.
I-Vagina kunye nobulili
Ngexesha lovuko lwezesondo, iimbumba ze-mucosal zesisu ziza kuqala ukuvelisa i-lubrification xa ibhinqa likhula ngokubanzi nobubanzi.
Oku kunciphisa ukungqubana kunye nomngcipheko wokulimala ngexesha lokungena kwamanzi.
Ibhinqa inokuqhubeka nokunyuka njengoko ibhinqa ivuselwa ngokugcwele njengoko umlomo wesibeleko uthatha ulwahlulo oluthe ngqo kwaye uqala ukuphinda uhlaziye. Oku kunokubangela ukuba isibeletho sikhuphuke kwi-pelvis kwaye yenze into ebizwa ngokuthi "i-ballooning effect" apho iindonga zesisu ziyakwelula kwaye zenze isivumelwano kwi-penis ukukhuthaza nokukhuthaza ukunyuka .
Ibhinqa ngokwayo ayinaso iziphelo ezininzi zezizathu ke kutheni abaninzi abafazi abakwazi ukuphumeza ngokwesondo ngokusuka kwangasese. Ngakolunye uhlangothi, i- clitoris ityebile kwiiswini kwaye inokusebenza kwisigxina kunye nesiswini ukuze kuphumelele i-orgasm ngexesha lokwabelana ngesondo.
IVagina ekubelekeni
Ngethuba lokubeletha, ibhinqa inika indlela yokuhambisa umntwana. Xa uqala ukuqala, umfazi oqhelekileyo ahlaselwe ngumzimba, ulwaphulo lwabasebenzi, ukugqithwa kweembrane, kunye ne-flow or amniotic fluid kwi-vagina.
Njengoko ukuhanjiswa kweendlela, umlomo wesibeleko uza kuqala ukuthoba kunye nokunciphisa, ukuvumela umntwana ukuba angene kwi-pelvis. Ulutsha luya kuqala ukulahlekelwa inkxaso yomsana wesibeleko njengoko kuqala ukuphambana kunye ne-os boss (ukuvulwa) iqala ukuhlaziya.
Xa ukunyuka komlomo kukhulu kunamasentimitha ama-10 (10 cm), umntwana uya kudlula kwisibeleko ukuya kumfazi. Isakhiwo sobhinqa sinjalo ukuba sikwazi ukunweba ngamaxesha amaninzi ububanzi obuqhelekileyo ukulungiselela ukuhanjiswa.
Ukulandela ukukhulelwa kunye nokubuya kwe- esrogen ejikelezayo , ubufazi buya kubuya kwi-approximate pre-pregnancy state kwiinyanga ezintandathu ukuya kwezi-ezisibhozo.
> Umthombo:
> Ukukhutshwa, K. kunye no-Likis, F. (2016) Impilo yabantwana bakwaGynecological (Okwesithathu Ed.) Burlington, eMassachusetts: Jones noBartlett Learning. I-ISBN-13: 978-1284076028.