Menene narkewa?

Narkar da abinci

Narkewar abinci wani bangare ne na rayuwar ɗan adam. Ta wannan hanyar, mutane na iya maye gurbin abubuwan gina jiki da ke cikin jikin mu da wasu abubuwa masu amfani don kiyaye mu da rai. Amma wannan ba ya faruwa ne kawai a cikin mutane, akwai dabbobi da tsire-tsire masu yawa waɗanda suke yin wannan aikin don su rayu.

Akwai kwayoyin halitta iri biyu wadanda suke amfani da ayyuka daban-daban don ciyar da kansu da samun kuzari. Akwai kwayoyin halittar heterotrophic, wanda zai dogara da wadatar da kansu da kayan aiki don su iya kula da kansu, girma da aiki. Kwayoyin Autotrophic (tsirrai ne da kuma hotuna masu rai) zasu dauki kuzarinsu ta hanyar haske, wanda zai canza shi zuwa makamashin sinadarai.

Menene narkewa a cikin mutane?

Kamar yadda babban ka'idar, narkewa shine canzawar abinci ta hanyar hydrolysis, wanda zai rikide zuwa kananan abubuwa wanda ake kira na gina jiki. Wadannan abubuwa zasu tsallake membrane din plasma ta hanyar wani sinadaran motsa jiki inda enzymes zasu taimaka masa Wannan tsari yafi faruwa a ciki, kodayake akwai wasu gabobin da yawa wadanda suke bangaren tsarin narkewar abinci.

Ginshiƙan asali don wannan narkewar abinci don faruwa sune: bakin, harshe, pharynx, esophagus, ciki, hanta, pancreas, ƙanana da babba hanji, dubura, da dubura.

A cikin wannan canjin abinci zuwa abubuwa, narkewar abinci shine ke da alhakin raba abubuwan gina jiki daga gubobi da sauran abubuwan da suka saura. Sannan kwayoyin zasu kasance masu kula da rarraba wadannan abubuwan gina jiki a duk cikin sauran kwayoyin kuma ta haka za'a canza shi zuwa makamashi, wani abu mai mahimmanci ga rayuwa. Gubobi da ɓarnar da basu da kyau sune zasu kula da fitar su.

abinci

Me yasa narkewar abinci yake da mahimmanci?

Domin yana da mahimmanci ga ci gabanmu da rayuwarmu. Tare da cin abinci muna shan abubuwan gina jiki kamar su sunadarai, bitamin, mai, carbohydrates, ma'adanai da ruwa. Abubuwa ne masu mahimmanci don rayuwa, girma, gyara jikin mu da kuzari.

Mataki-mataki kan narkewa:

Ciwan ciki

Narkewa ya fara a cikin bakin: Muna gabatar da abinci a cikin baki kuma muna yin aikin injiniya wanda ya ƙunshi taunawa da kuma fasa abinci tare da taimakon molar da gland. An samar da abin da ake kira bolus cewa tare da aikin haɗiyewa zai ratsa cikin maƙogwaron kuma daga can zuwa huhun hanji.

A cikin esophagus abincin bolus za a tura cikin ciki godiya ga wasu motsi (kayan aiki), anan ne babban matakin narkewa zai gudana.

Narkar da abinci

Narkar da abinci

A ciki ne wannan aikin yake faruwa. Ta hanyar motsawar jijiyoyin zazzabin ciki za a ɓoye wanda zai yi bolarjin ya faɗi ƙasa kuma wannan shine lokacin da ya canza shi ya zama amshi.


Glandan narkewa suna shiga cikin wannan tsari na ɓoye enzymes: hanta da pancreas, wanda zai dauki nauyin taimakawa wajen fasa abinci.

Tsotsa

A wannan matakin, sinadarin chyme, bile da ruwan narkewa ya isa cikin hanji kuma wannan shine lokacin da ake samar dashi. canzawa zuwa na gina jiki. A wannan lokacin shine lokacin da zamu iya magana game da narkewar sinadarai, kuma shine lokacin da duk waɗannan abubuwan suke yin aikinsu don chyme ya katse dukkan igiyoyin intermolecular.

Saukewa

Shine ɓangaren ƙarshe na narkewa kuma shine inda babban hanji ke shiga. Game da hanyar da za a kawar da gubobi da sharar da jiki ba ya buƙata. Shine komai da ƙananan hanji basu shashi ba kuma aka canza shi zuwa mai gina jiki. Wadannan ɓarnatarwar suna canzawa zuwa najasa, suna tafiya ta dubura kuma ana fitar dasu ta dubura. A wannan lokacin shine lokacin da muke magana game da ƙaura ko bayan gida.


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