Ijwabu

**Ijwabu liyisigaxa** esiphindwe kabili sezicubu zemisipha ebushelelezi, imithambo yegazi, ama-neuron, isikhumba, nolwelwesi lwamafinyila okuyingxenye yomthondo ehlanganisa futhi ivikele i- glans penis nenyama yomchamo .Lujwabu ephathekayo, sasivumela stretchable, futhi uba yemvelo igrisi .Ijwabu liphinde lichazwe njenge- **prepuce**, igama elibanzi ngokwezobuchwepheshe futhi elihlanganisa ne- clitoral hood kwabesifazane, lapho ijwabu lithanda kakhulu embhedeni.

Ijwabu labantu abadala livame  ngaphezulu kwe-glans. Ukumbozwa kwama-glans endaweni e-flaccid nokuma kuyehluka kuye ngobude bejwabu.Ijwabu linanyathiselwa ku-glans lapho lizalwa futhi imvamisa alibuyiseki kusebuntwaneni.Ukwehluleka ukuhoxisa ijwabu ebuntwaneni akufanele kuthathwe njengenkinga ngaphandle kokuthi kube nezinye izimpawu.I innervated kakhulu zone mucocutaneous we umthondo kwenzeka eduze ichopho ijwabu.

Ijwabu lingaba ngaphansi kwezimo eziningi zokugula.Izimo eziningi azivamile futhi zelashwa kalula. Kwezinye izimo, ikakhulukazi ngezimo ezingalapheki, ukwelashwa kungafaka ukusoka, inqubo lapho ijwabu lisuswa khona kancane noma ngokuphelele.

## Isakhiwo

Ingaphandle lejwabu liwukuqhubeka kwesikhumba emgodini wendoda, kepha ijwabu langaphakathi ulwelwesi lwamafinyila njengaphakathi kwejwabu leso noma umlomo. Indawo enocucutaneous yenzeka lapho kuhlangana khona ijwabu langaphandle nelangaphakathi.Njengejwabu leso, ijwabu likhululekile ukuhamba ngemuva kokuthi lihlukane ne- glans, okuvame ukwenzeka ngaphambi noma ngesikhathi sokuthomba.Ijwabu linamathiselwe kwi-glans yi- frenulum, isicubu semithambo esinemithambo yegazi kakhulu.I-World Health Organisation ithi "[f] he frenulum yakha ukuxhumana phakathi kwezingqimba zejwabu langaphandle nangaphakathi, kuthi lapho ipipi lingamile, liqinise ukunciphisa imbobo yejwabu. 

Ngokwalokho okutholwe ngumlando yiBritish Association of Urological Surgeons ngokususelwa ocwaningweni olwenziwe ekuhlolweni kwesidumbu samajwabu angama-22, "i-prepuce inikeza ipulatifomu enkulu futhi ebalulekile yezinzwa eziningana nokuphela kwemizwa",  The College of Physicians and Surgeons waseBritish Columbia ubhale ukuthi ijwabu "lakhiwa isikhumba sangaphandle kanye ne- mucosa yangaphakathi ecebile ngeziphetho zezinzwa zemizwa ezikhethekile nezicubu ezine-erogenous." 

Amaseli e-Langerhans amangqamuzana e-dendritic angavuthiwe atholakala kuzo zonke izindawo ze-penile epithelium,  kepha angaphezulu kakhulu ebusweni bengaphakathi lejwabu. 

## Umsebenzi

Ngo-2007 i- World Health Organisation (2007) yathi kukhona "impikiswano mayelana neqhaza lejwabu, ngemisebenzi engaba khona kubandakanya ukugcina i-glans imanzi, ukuvikela ipipi elikhulayo esibelethweni, noma ukukhulisa injabulo yezocansi ngenxa yobukhona bezinzwa zemizwa" . Ijwabu lisiza ukuhlinzeka ngesikhumba esanele ngesikhathi sokumiswa. 

Ijwabu livikela izingilazi.Ijwabu livikela ubukhazikhazi bezinsana kusuka ku-ammonia kanye nendle kumanabukeni, okunciphisa izehlakalo zokuqina kwenyama, futhi kuyaqhubeka nokuvikela izingcwecwe ekulimaleni nasekuhlukumezekeni impilo yonke. Ukugoqwa kwesilondolozi kugcina ubumanzi obuncane obungabekwa ngaphambili, obungadala i-smegma lapho inhlanzeko efanele ingenziwa. 

Ijwabu liqukethe izidumbu zikaMeissner, okuyiziphetho zemizwa ezibandakanyeka ekuzweleni okuhle kokuthinta.Ucwaningo lwamasampuli esikhumba luthole ukuthi, uma kuqhathaniswa nezinye izindawo zesikhumba ezingenaboya emzimbeni, inkomba kaMeissner ibiphezulu kunethiphu yomunwe (0.96) futhi iphansi kunawo onke kujwabu (0.28) kuphakanyiswe ukuthi ijwabu linezicubu ezibucayi ezingenaboya umzimba.  Ucwaningo lwezomlando olwenziwe kuzinzwa zomthondo lithole ukuthi ijwabu "alinandima ekuzweleni ngokocansi". 

### Ukuziphendukela kwemvelo
Kuma-primates, ijwabu likhona ezithweni zobulili zabesilisa nabesifazane futhi kungenzeka ukuthi belikhona izigidi zeminyaka yokuziphendukela kwemvelo.Ukuvela kwama-penile morphologies ayinkimbinkimbi njengejwabu kungenzeka kuthonywe abesifazane. 

## Umphakathi namasiko

### Ukulungiswa

I-Preputioplasty inqubo ejwayelekile yokwakhiwa kabusha kwejwabu, evame ukwenziwa lapho umfana ezalwa nejwabu elincane kakhulu: 177 kwenziwa inqubo efanayo yokunciphisa ijwabu eliqinile ngaphandle kokusebenzisa ukusoka.  : 181 

Ukusoka ukususwa kwejwabu, ngokungaphelele noma ngokuphelele.Ezinganeni ezisanda kuzalwa, kungenzelwa izidingo zenkolo noma okuthandwa ngumuntu okuzungeze inhlanzeko nobuhle. : 257 Ukusoka kungenziwa nasezinganeni noma kubantu abadala ukwelapha i-phimosis, i-balanitis, noma ukuvimbela ukudluliselwa kwezifo ezithathelwana ngocansi.: 166 Ukuziphatha kokusoka ezinganeni kuyimbangela yengxabano . Kusukela ngo-2012, ayikho inqubo ephumelelayo yokwakha kabusha ijwabu elisokiwe ebelishicilelwe.  : 181 Amanye amadoda asebenzise izinsimbi ukwelula isikhumba somthondo ukubuyisa ijwabu; izicubu ezivelayo zimboza izingcwecwe kepha aziphindi izici zejwabu. 

Eminye imikhuba yamasiko noma yobuhle ihlanganisa ukubhoboza izitho zangasese okubandakanya ijwabu nokusika ijwabu . 

### Imikhiqizo esuselwa esikhunjeni

Ama-Foreskins atholakala ezinkambisweni zokusoka avame ukusetshenziswa ngabaphenyi be-biochemical kanye ne-micro-anatomical ukufunda ukwakheka namaprotheni esikhumba somuntu.Ikakhulu, amajwabu atholakala ezinganeni ezisanda kuzalwa atholakale ewusizo ekukhiqizeni isikhumba somuntu esithe xaxa. 

Ama-Foreskins wezingane asetshenziselwa izicubu zokuxhunyelelwa kwesikhumba kanye nezidakamizwa ezisekelwe ku- β-interferon. 

Ama- fibroblast akhiqizwa ngesikhumba asetshenziswe ocwaningweni lwe-biomedical,  nasekusetshenzisweni kwezimonyo. 

### Imikhuba yezocansi
Ijwabu lingabamba iqhaza emikhubeni yezocansi njengokumisa idokodo . Ukudokisa kungumkhuba wobulili obufanayo, obubandakanya ukushaya indlwabu, ngokufaka umthondo we-glans embotsheni yelinye ipipi.

### Umlando
EGrisi lasendulo, amajwabu ayaziswa, ikakhulukazi izibikezelo ezazinde ngobude. Umfanekiso wokuqala owaziwayo wejwabu ubuyela emuva embusweni waseGibhithe.Ijwabu lingabonakala kuvezwe kubuciko obuvela eminyakeni ehlukene.
File:'David'_by_Michelangelo_Fir_JBU002.jpg|Ukuqoshwa kukaDavid Marble, ngo-1504 AD
File:Orestes_Delphi_BM_GR1917.12-10.1.jpg|" Orestes eDelphi". Ukudweba kwabesilisa ababili abanqunu, ca. 330 BC
File:NAMA X15118 Marathon Boy 3.JPG|*Intsha yaseMarathon*, iNational Archaeological Museum, e-Athene, ca. 340-330 BC


## Izinkomba