Tsawon na hanji

Hanji ne narkewa kamar tsarin a mafi vertabrate. Ya kamata ya zama kai tsaye bayan da ciki. A cikin hanji ne har abada digesting ingested abinci, da sha na gina jiki, kazalika da cire (fitarwa) undigested abubuwa.

A wasu dabbobi, da narkewa kamar fili ne kawai daga wannan sashen. A wannan yanayin, da tsawon hanji dogara a kan jinsin dabbobi, musamman su abinci ci da shekaru.

A mafi m na rufaffiyar tsarin da narkewa kamar sashen auku a flatworms da coelenterates (mulkin mallaka cnidarians). A karshen da guda gastrovascular rami ta hanyar abin da musayar abubuwa tsakanin mutum na da caji ne ke, da kuma sauran mallaka members. A flatworms akwai daya bude ga karbar abinci da kuma kau da sharar gida.

Kwaro (kwari, molluscs) mallaka hanji, kunsha na uku rarrabuwa (agara, na baya kuma tsakiyar hanji). A gaban part hada da bakinka, goiter, pharynx, esophagus, located a raya na dubura da kuma dubura, a tsakiyar - a gaskiya, hanji, Malpighian tasoshin, ciki. Wasu murjãni da Evert hanji. Narkewa haka za'ayi waje.

The larvae na lamprey-peskoroek da Amphioxus da isasshen kai tsaye da kuma kananan hanji. Authority farawa nan da nan bayan da oropharyngeal kogo. adult lampreys tsawon na hanji shi ne kananan (ba fiye da jiki da kanta). Authority farawa nan da nan bayan da esophagus yana da wani bawul a cikin wani nau'i na karkace. Saboda wannan karkace-dimbin yawa a tsaye Musulunci karuwa sha da kuma narkewa yankin. Karkace bawul ne ba kuma sturgeons da kifayen teku.

Mutane da yawa vertebrate hanji tsawon damar raba shi a cikin sassan - a kai tsaye, ƙanana da manyan hanji. A wannan jiki an nuna asĩri a cikin, pancreas da kuma hanta. A farkon hanji fitar kasusuwan jikinsu kifi suna located pyloric appendages (makafi tafiyar matakai). Yawan su zai zama daban-daban. Halittar dabba mai kafafuwa suna da duodenum, da kuma cloaca yana buɗewa dubura.

Land herbivorous dabbobi masu rarrafe sun kyau-ɓullo da cecum. An located a kan iyakar da manyan da kananan Division. A tsawon hanji (bakin ciki) tsuntsãye sau da yawa jiki tsawon. Daga raya division, wanda ya buɗe a cikin cloaca, shi ya raba biyu makafi outgrowths. Dubura da kuma ciwon ba ba.

Herbivorous dabbobi da dogon isa hanji. Makafi, kuma m sassan a lokaci guda sun sun ɓullo da quite da kyau. ciwon tsawon rodent iya isa 53% na jimlar tsawon na hanji. Da yara shi ne ya fi guntu. Alal misali, a tumaki hanji, wanda shi ne fiye da jiki tsawon 29-35 sau da boar - 14, doki - 12, da kuma Wolf - 6. The kitsen rabu a kawaici symbiotic kwayoyin, wanda suna da mafi kyau ci gaba herbivorous.

Hanji a cikin mutane shi ne mafi girma sashin jiki na narkewa kamar tsarin. Yana farawa daga ciki da kuma ƙare da dubura (dubura). Abinci taro motsa da hanji suna (kalaman-kamar contractions). A kan aiwatar da narkewa suna da hannu, shi ne a jikin kwayoyin da dokoki ne a Flora. Wannan rabo Git narkewa yana da za'ayi ba kawai, amma kuma sha na ma'adinai abubuwa daga abinci, da kira na wasu hormones, na rigakafi tafiyar matakai.

Lokacin da yake rayuwa, tsawon hanjinsu a cikin mutane (balagaggu) ne game da hudu mita. A haihuwa, ta kasance game da mita uku, da cewa mafi jariri girma a talakawan sau shida. A tsawon mutum hanjinsu bayan mutuwa ƙaruwa kuma shi ne game da bakwai zuwa takwas mita. Wannan shi ne saboda da shakatawa na tsokoki bayan mutuwa.