Ake sifunde kabanzi ngalo mthambo obalulekile (i-Superior Mesenteric Vein) ongaphakathi esiswini sakho.

Sawubona! Unjani? Namuhla sizokhuluma ngomthambo wegazi emzimbeni wethu, ikakhulukazi ngaphakathi esiswini sethu, esingakhulumi kakhulu ngawo ekuphileni kwethu kwansuku zonke, kodwa udlala indima ebaluleke kakhulu. Lokhu kubizwa ngokuthi "i-Superior Mesenteric Vein". Ungakhathazeki uma igama lizwakala lingokwesayensi kancane. Ngizokuchazela kalula, ngolimi lwethu. Njengoba nje ubungachazela umngane.

Iyini le vein ye-mesenteric ephakeme (SMV)? Yini ngempela eyenzayo?

Kalula nje, umthambo wakho we-mesenteric ongcono kakhulu uwumthambo wegazi omkhulu othatha igazi emathunjini akho futhi usize ukuwuthwala uye esibindini sakho. Cabanga ngawo njengendlela enkulu emzimbeni wakho. Yilapho izakhamzimba esizimunca ekudleni esikudlayo nesikuphuzayo ziya khona esibindini.

Lo mthambo uyingxenye ebaluleke kakhulu "yeSistimu Yesivikelo Sesibindi" emzimbeni wethu, noma uhlelo lwemithambo oluthwala igazi liye esibindini. Ngoba, lo "Mthambo We-Mesenteric Ophakeme" uqoqa igazi elivela emithanjeni emincane eminingi. Kufana nemifudlana emincane ehlangana nomfula omkhulu. Ngakho-ke, igazi eliningi elivela ezithweni ezisesiswini sakho liya esibindini ngalo mthambo. Lokhu kusiza ekuhambeni kwegazi emzimbeni wethu wonke, okungukuthi, ukujikeleza kwegazi.

Manje ungase uzibuze, kwenzekani uma kwakheka ihlule legazi kulo mthambo, noma uma kukhona ukuphazamiseka kokugeleza kwegazi? Yebo, uma lokho kwenzeka, kungaba nezinkinga ezinkulu . Yingakho kubalulekile ukuqaphela lokhu (SMV) nokukugcina kunempilo.

Ngakho-ke, yimaphi amagatsha ahlinzeka ngegazi ku-SMV? Okusho ukuthi, i-SMV iqoqa igazi kuziphi izitho zomzimba?

Cabanga ngale `(Superior Mesenteric Vein)` njengegatsha elikhulu lomuthi. Lelo gatsha linamagatsha amancane, abizwa ngokuthi imithambo yamagatsha, anamathele kulo. Le mithambo emincane iqoqa igazi ezithweni ezizungezile bese ililetha ku-`(SMV)` enkulu. Ngakho-ke, le `(SMV)`, kanye nemithambo emincane enamathele kuyo, iqoqa igazi ezithweni ezilandelayo:

• Amathumbu akho amancane (indawo eyinhloko lapho ukudla esikudlayo kugaywa khona futhi izakhamzimba zimuncwa emzimbeni)
• Amathumbu akho amakhulu (lapho amanzi amuncwa khona ezinsaleleni zokudla okugayiwe kanye nendle eyenzeka khona)
• Isisu sakho (lapho inqubo yokugaya ukudla iqala khona)
• I-pancreas yakho (yilokhu okukhiqiza ama-hormone afana ne-insulin nama-enzyme asiza ekugayeni ukudla)
• I-appendix yakho (lena yingxenye yamathumbu amancane)

Igazi eliqoqwe kuzo zonke lezi zitho lithwalwa ngqo lisuka ku-Superior Mesenteric Vein liye komunye umthambo omkhulu obizwa ngokuthi i-Portal Vein , umthambo oyinhloko wesibindi sakho .

Khumbula isibonelo segatsha engikhulume ngaso ekuqaleni. Uma i-SMV iyigatsha lomuthi, umthambo oyinhloko wesibindi, i-Portal Vein, ufana nesiqu somuthi. Lesi siqu, i-Portal Vein, singena esibindini ngendawo ebizwa ngokuthi i-Liver Hilum. Bese kuthi, igazi eliku-Portal Vein lingene esibindini, lapho isibindi sihlunga khona igazi, silihlanze, futhi sicubungule izakhamzimba ezidingekayo . Bese kuthi, igazi lithunyelwe emithanjeni eholela enhliziyweni. Ukusuka lapho, liya enhliziyweni, emaphashini, futhi lisakazeke kuwo wonke umzimba. Akuyona yini indlela emangalisayo?

Ikuphi ngempela le vein ye-mesenteric ephakeme (SMV) etholakala emzimbeni wethu?

"Umthambo wakho we-Superior Mesenteric" utholakala ngaphakathi kwesisu sakho. Isisu siyindawo enkulu engaphansi kwesifuba sakho nangaphezulu kwezinqe zakho. Izitho ezibalulekile nezicubu esiswini sethu zitholakala ngaphakathi kwalesi sisu.

Le `(SMV)` iqala eduze kwesisu sakho, ngaphakathi kwe-`(mesentery)` membrane exhumanisa amathumbu akho amancane. (Le `(mesentery)` iyi-membrane esiza ukugcina izitho zakho zesisu zisendaweni eyodwa ngaphandle kokuhambahamba.) Ukusuka lapho, le `(SMV)` inwebeka phezulu, iye ku-`(L1 Vertebra)` vertebra (ithambo emgogodleni wakho) phezulu emgogodleni wakho. Lapho, le mithambo ihlangana ne - `(splenic vein)` ukuze yakhe i-`(portal vein)` okukhulunywe ngayo ngaphambili.

Lunjani uhambo lwe-SMV? Ingabe luhamba lodwa?

Umthambo wakho we-Superior Mesenteric ugijima ngakwesokudla se -Superior Mesenteric Artery, ohamba ngokuhambisana nawo. Lo mthambo uthwala igazi elihlanzekile nelicebile nge-oxygen uye emathunjini akho. Okwamanje, i-SMV ithwala igazi elingena-oxygen (kodwa elicebile ngezakhamzimba) elivela emathunjini akho liye esibindini sakho. Imithambo eminingi nemithambo emizimbeni yethu isebenza eceleni ngale ndlela. Cabanga ngakho njengezimoto ezihamba ngakolunye uhlangothi lomgwaqo, kuyilapho izimoto ezingakolunye uhlangothi lomgwaqo zihamba ngenye indlela.

Kodwa-ke, ngezinye izikhathi, akuvamile, ukuthi i-SMV yomuntu ingahamba iye kwesobunxele se-Superior Mesenteric Artery. Lokhu kuvame ukwenzeka ezinganeni ezizalwa zinokukhubazeka kwamathumbu. Noma, kungenzeka nalapho kwakheka isimila esiswini futhi sicindezela imithambo ezungezile.

Yenziwe ngani i-superior mesenteric vein (SMV)?

Njengeminye imithambo emzimbeni wethu, izindonga ze-SMV yakho zakhiwe ngezendlalelo ezintathu eziyinhloko:

• Ingqimba engaphandle `(Tunica Adventitia)`: Yilokhu okunikeza umthambo ukuma kwawo. Kusebenza njengesivikelo somthambo.
• Ingqimba ephakathi (i-Tunica Media): Lokhu kuqukethe amangqamuzana emisipha abushelelezi. Lawa maseli avumela imithambo ukuba ivuleke futhi inciphe njengoba igazi ligeleza, njengokungathi ivumelana nomfutho wegazi.
• Ingqimba engaphakathi kakhuluI-Tunica Intima: Lokhu kunolwelwesi oluncane olwakhiwe ngamaseli akhethekile abizwa ngokuthi ama-Endothelial Cells. Yilokhu okusiza igazi ukuthi ligeleze kahle futhi ngaphandle kwesithiyo.

Cabanga ngakho njengepayipi lamanzi. Lelo payipi linegobolondo ngaphandle, ingxenye eqinile phakathi, kanye nengqimba ebushelelezi ngaphakathi ukuze amanzi adlule kalula, akunjalo? Yileyo ndlela le mithambo ekhona.

Yiziphi izimo zezokwelapha ezingathinta i-SMV? Kubalulekile yini ukuzazi lezi?

Yebo, kubalulekile impela. Ngoba, ezinye zezimo ezithinta `(SMV)` zingaba zimbi kakhulu. Ake sazi kakhulu ngalezi zimo ezimbili:

1. I-SMV Thrombosis : Lokhu kwenzeka lapho kwakheka ihlule legazi ngaphakathi kwemithambo yakho ye-mesenteric ephezulu. Uma kwenzeka ngokuzumayo, okubizwa ngokuthi i-acute thrombosis, uphawu oluyinhloko ubuhlungu besisu obungazelelwe, obukhulu . Kodwa-ke, kwabanye abantu, bungakhula phakathi nezinsuku noma amasonto. Kubantu abanjalo, ubuhlungu bungase bufike budlule, noma bangase bangabi nazimpawu nhlobo. Uma uthola ukwelashwa ngokushesha kwalesi simo, kulapho amathuba akho okululama eba ngcono khona. Ngakho-ke, uma uzwa ubuhlungu besisu obungazelelwe, obukhulu, kufanele nakanjani ufune iseluleko sezokwelapha.

2. Umfutho wegazi ophezulu we-Portal : Lokhu kuwukwanda komfutho wegazi ohlelweni lwemithambo yegazi ye-portal oluthwala igazi liye esibindini. Izimbangela eziyinhloko zalokhu kungaba izifo ezifana ne-cirrhosis yesibindi kanye namahlule egazi. Umfutho wegazi ophezulu we-Portal ungabangela izinkinga ezisongela ukuphila, njengokuphuma kwegazi ngaphakathi. Ukwelashwa kwalesi simo kuhloselwe ukulawula izinkinga, futhi kwezinye izimo, ngokuguqula ukuhamba kwegazi ukuze kuncishiswe umfutho wegazi emithanjeni.

Nakuba ukufunda ngesakhiwo somzimba wethu, noma `(Anatomy)`, kuyinto ethokozisayo kakhulu, ngezinye izikhathi ungase ukuthole kunzima ukuqonda la magama nemibono. Lokho kuvamile. Ungazizwa sengathi kufanele ufunde konke ngesikhathi esisodwa. Ikakhulukazi uma ubheka lezi zinto ngenxa yesimo sezokwelapha, khumbula ukuthi udokotela wakho ukhona ukuzokusiza. Buza futhi uma ungaqondi lutho, bese ubhala phansi amaphuzu abalulekile. Uma wazi okwengeziwe ngokwenzekayo emzimbeni wakho, kulapho kuzoba lula khona ngawe ukukhuluma nodokotela wakho ngesimo sakho nokuthi yini ongayilindela esikhathini esizayo.

Ngakho-ke, yiziphi izinto ezibaluleke kakhulu okufanele sizikhumbule kulokho esikhulume ngakho namuhla?

Kulungile, ngithemba ukuthi usuyaqonda kahle "i-Superior Mesenteric Vein" esikhulume ngayo. Nazi ezinye izinto okufanele uzikhumbule kafushane:

• I-SMV iwumthambo obaluleke kakhulu: ithwala igazi elicebile ngezakhamzimba lisuka emathunjini akho liye esibindini. Ibalulekile ekusebenzeni kahle kohlelo lwethu lokugaya ukudla kanye nesibindi.
• Izinkinga nge-SMV zingaba zimbi kakhulu:Izinkinga ezinkulu zingabangelwa izimo ezifana nokuqhekeka kwegazi (i-SMV Thrombosis) noma ukucindezela okwenyukayo ohlelweni lwemithambo yegazi okuholela esibindini (i-Portal Hypertension).
• Qaphela izimpawu: Uma unobuhlungu besisu obungazelelwe, obukhulu noma ukungakhululeki kwesisu okuqhubekayo, kufanele nakanjani ufune iseluleko sezokwelapha. Ukwelashwa okusheshayo kungaletha imiphumela emihle kakhulu.
• Khuluma nodokotela wakho: Uma unemibuzo noma ukukhathazeka, ungesabi ukubuza udokotela wakho. Bakhona ukuzokusiza.

Ngiyethemba ukuthi lolu lwazi luwusizo kuwe. Hlala uphilile!

Umthambo we - mesenteric ophakeme, i-SMV, imithambo yegazi yamathumbu, ukuhlinzekwa kwegazi kwesibindi, uhlelo lwe-portal, i-SMV thrombosis, umfutho wegazi ophezulu we-portal