Amathumbu yomuntu umkhathi

Ithumbu Human kuyingxenye ipheshana wokugaya ukudla bese iqala eduze pylorus futhi liphethe ngamazwi ukuvulwa labaqaphi elingemuva. Ngo unomzimba onjalo, kukhona ukugaya olunzulu ukudla ukumuncwa zonke izakhi zawo. Kufanele kuphawulwe ukuthi isitho emathunjini kudlala indima enkulu ohlelweni somzimba sokuzivikela.

Likuphi emathunjini kubantu? isitho Kwethulwa etholakala endaweni besisu (ezansi), alithathe kakhulu. Njengoba yaziwa, ubude emathunjini womuntu imayelana amane amamitha (ngempilo) futhi mayelana 500-800 amasentimitha ngemva kokufa. Ngo izinsana, ubude umzimba kuhluka 340 ngamasentimitha 360 ekupheleni onyakeni wokuqala wokuphila, it kwandisa cishe 50% bese idlula ukukhula kwengane izikhathi 6-7.

Anatomy emathunjini womuntu

Isikhundla, ukuma nokwakheka ushintsho emzimbeni ngesikhatsi nokuvuthwa. Amandla okukhulu waphawula esikhathini kusuka onyakeni wokuqala kuze kube iminyaka engu-3. Lokhu kungenxa yokuthi umntwana uba ukudla okuxubile jikelele.

Anatomically, amathumbu womuntu uhlukaniswe izigaba ezilandelayo:

• mncane;
• obukhulu.

ingxenye Okokuqala kuyingxenye isimiso sokugaya ukudla bungene okuyinto ngokufanele phakathi ikholoni nasesiswini. Kulesi umzimba uze zonke izinqubo eyinhloko ukugaya. Igama layo emathunjini amancane ubophekile ukuthi izindonga zalo mancane eyizingqabavu kuka ezinkulu amathumbu udonga. Ngaphezu kwalokho, igebe futhi ingaphakathi yomzimba, futhi, lincane kakhulu.

Ngakwelinye ihlangothi, amathumbu womuntu nomzimba omncane luhlukaniswe amasegimenti ezilandelayo:

• 12 tiperstnoj emathunjini;
• Skinny;
• ileum.

Ithumbu elikhulu iyona ephansi ekupheleni ingxenye ipheshana wokugaya ukudla. It is ukusivumela uketshezi angenayo kumiswa chyme fecal. Leli gama wathola emathunjini ngenxa yokuthi izindonga zawo makhula kakhulu ukwedlula ezindongeni ikhadi odlule. Kuyaphawuleka ukuthi ezifana amandla, ukuthi igunya kwakubangelwa muscle zezinzwa izicubu ungqimba. I ububanzi we-colon futhi inesikhala zayo zangaphakathi (ingaphakathi) kubuye kunangendlela emathunjini amancane.

Ithumbu elikhulu yomuntu zingahlukaniswa zibe kumasegmenti ezilandelayo:

• Blind nge isithasiselo vermiform (esithasiselweni);
• ikholoni amathumbu nge Yegatsha ahlukene;
• ikholoni inyuka ikholoni;
• transverse ikholoni emathunjini;
• ikholoni ukwehla ikholoni;
• sigmoid;
• ngokuqondile kusukela ingxenye okubanzi, ampoules, futhi ekupheleni tapered - canal anal, okuyinto iphela ingquza.

Ubukhulu emathunjini main

Ubude emathunjini amancane luyehluka in the ububanzi 160-430 cm. Njengomthetho, umzimba female kungacishe emifushane. I ububanzi somzimba 30-50 mm. Ubude emathunjini esikhulu emhlabeni 1.4-1.6 metres. Ubukhulu bayo uyalingana kwesigaba sokuqala 7-10 amasentimitha futhi caudally - 4-6.

I mucosa zomzimba kuyinto villi amaningi-amaqhubu yimuphi umsebenzi emathunjini ingaphakathi. Per milimitha skwele ebusweni emathunjini villi-akhawunti cishe 20-40.