Brown kitse a cikin mutane: bayanin irin ayyuka da kuma siffofin

Mene ne ruwan kasa mai? Mene ne ayyuka shi aikin? A wadannan da sauran tambayoyi za mu amsa a wannan labarin. A cikin jikin mutum akwai iri biyu m abubuwa: da launin ruwan kasa (Bat - saboda kona kitsen samar thermogenesis da halitta zafi) da fari (na Wat - tsara don samar da makamashi ajiya). Mutanen da suka kasance obese ayan ruwan kasa mai ne kasa, da kuma fari - more.

aiki

Brown kitsen damar jiki don kula da akai zazzabi. Wannan dabarar da aka kira thermogenesis. Akwai iri biyu thermogenesis: da contractile (rawan jiki), a cikin abin da kadan ne tsara saboda da akan rage kwarangwal tsoka (musamman sabon abu - sanyi tsoka tremor), da kuma rawan jiki (na ayyuka na ruwan kasa mai).

Don yadda ya kamata magance wasu cututtuka jikin mutum zazzabi ƙaruwa kadai. Idan wani shan wahala daga zazzabi, ya sauri sake tsarafa da thermoregulatory tsarin da aka kunna, kuma ya fara aiki a wani sabon matsayi. Wannan shi ne dalilin da ya sa yanayin jiki ne, ba wajibi ka saukar da 38.5 digiri.

haltta

Da farko ruwan kasa mai samu a dabbobi. Wadanda dabbobi cewa fada cikin rashin himma a cikin hunturu, wannan abu ne mafi kyau ci gaba, kamar yadda a cikin wannan lokacin da metabolism slows saukar. A ra'ayi na wannan ba shi yiwuwa a tsare jiki zafin jiki tsoka contractions.

Har ila yau muhimmanci shi ne ruwan kasa mai da falke spring dabbobi: ta hanyar su generated jiki zafin rana zafin jiki ne muhimmanci ƙãra, saboda abin da dabba tana farkawa.

masu

Quite kwanan nan da ya zama sananne cewa ruwan kasa mai samuwa ne kawai a yara. Yana taimaka musu samun amfani da sabon yanayi, bayan haihuwa. A jarirai wannan abu ne dake cikin yankin na koda, wuyansa tare da babba da baya, kafadu, da kuma game da 5% na jiki nauyi.

Har ila yau a cikin jiki wani lokacin jariran ruwan kasa mai ake gauraya ta da fari. Ga yara ruwan kasa abu ne na bayar da muhimmanci, kamar yadda ya kare su daga hypothermia, saboda wanda bai kai ba jarirai sau da yawa mutu. Godiya ga wannan bangaren na jarirai kasa kula sanyi fiye da mazan mutane.

Kwayoyin na ruwan kasa mai yana da wani musamman ingancin - akwai wata babbar lamba na mitochondria (wasu gabbansa da suke taimakawa wajen samar da makamashi ajiya). Godiya a gare su, su, a ainihi, suna da nasu launi. Mitochondria dauke da takamaiman gina jiki UCP1, wanda, bypassing da mataki na ATP kira nan take sabobin tuba m acid a cikin zãfi.

Triglycerides (lipids) ba a cikin kitsen abun da ke ciki ne da hotuna daga wanda za a iya kerarre da zafi (ATP). Lokacin da jariri yana bukatar makamashi mai yawa (misali, don ci gaba da dumi), fats sha lipolysis. A sakamakon haka, akwai m acid cewa UCP1 a sel ruwan kasa mai canza zuwa zafi. A sakamakon haka, da rage a jiki mai reserves. Da farko ciyar triglycerides a ruwan kasa abu, da kuma lokacin da sia reserves fara ya narke, da kuma m fari.

A sakamakon haka, jiki na rage nauyi. Duk da haka, domin ya dace da tsari na baby, haife, ya kamata ku ci kyau (don kunna lipolysis bukatar makamashi) da kuma numfashi kullum (ga hanyar mayar da m acid bukatar oxygen).

Abin baƙin ciki, adult, wannan inji hankali raunana. Bayan mako biyu bayan haihuwar yi rawa (a kan hypothermia dauki) ya sauya mataki na wani ruwan kasa abu, musamman a lokacin da yara dress warmly da kuma kiyaye su a cikin wani zafi dakin.

adult mutane

Yau, shi gano cewa ruwan kasa mai a manya ne akwai. Na dogon lokaci an yi tunanin cewa wannan abu hasarar da darajar da karshen shekarar farko ta rayuwa. Duk da haka, a shekarar 2008, masana sun ƙaddara cewa ruwan kasa adipose nama yana ba kawai zaune a cikin jikin manya (ya zama sananne a 1908), amma da aka kunna ta sanyi.

Wannan samu aka yi da wani sabon Dabarar fasahar aiki metabolism a kyallen takarda. Mun yi amfani da positron watsi-lissafta tomography, wanda ya nuna cewa a cikin jiki na ya fara tasawa mutum ne game da 20-30 grams (as kadan) aikin ruwan kasa mai, yafi a cikin supraclavicular yankin.

An sani cewa Pet-CT detects rayuwa aiki na gangar jiki. Physiologist Wouter van Marken Lihtenbelt ya ruwaito cewa wani rukuni na matasa (24 mutane) da aka ba a daidai kashi na rediyoaktif glucose. Wannan ya yi domin ya sami damar gane more aiki ruwan kasa mai zuwa a musamman na'urar.

Bayan haka, mahalarta a cikin binciken sun kai ga dakin inda zafin jiki ba wuce 16 digiri. CT scan ya nuna cewa, a karkashin fata na kirji, wuyansa, kuma ciki mai ne mutane 23 "amfani" masana'anta da cewa aiki, Warming mutane a wani sanyi dakin.

Physiologist, ya ce cewa masana yi mamakin ganin cewa shi ne sosai kuma haka mutane da yawa. Lokacin da nazari a dakin da zazzabi uku mahalarta, ruwan kasa abu da aka iske ba. Masana sun yi imani da cewa masana'anta ba bace, amma kawai ta daina ta aiki.

tasiri

Saboda haka ka san inda mutum ne da launin ruwan kasa mai. Yana ba fiye da 1-2% na jiki nauyi. Kuma duk da haka, a lokacin da ta m juyayi tsarin stimulates nama a cika da qarfin dabbobi masu shayarwa wanda aka saba da sanyi, ta ƙãra da zafi samar. A generated da makamashi zai iya haka kai kara daya-uku zafi halitta a cikin jiki. Lokacin da launin ruwan kasa mai da aka kunna, shi ciyarwa har zuwa 300 watts (wasu kira 400 Watts) da kilogram na balagaggun mutum.

An sani cewa mutum na talakawan nauyi a sauran konewa game 1 kW na iko. Kunna ruwan kasa mai, za ka iya karya a cikin gado, kuma ku ciyar ashirin sau fiye da makamashi fiye da da.

mai kona

Menene ruwan kasa mai? Ya taimaka kashe mai. Idan aka kunna, m acid daga fari adipose nama suna canjawa wuri zuwa kasa-kasa. The farin abu ne ajiyar a cikin kwantena da kuma gland na ciki gabobin, karkashin fata. Brown, maimakon samar da makamashi ajiya, kona shi a cikin manyan yawa. A sakamakon haka, zafi ne saki. Wannan tsari shine ake kira thermogenesis, wanda zai fara ta aikin saboda wuce haddi da abinci amfani.

binciken

Farin da kuma ruwan kasa mai - su ne biyu daban-daban abubuwa. Oxidative damar ruwan kasa abu ne 20 sau fi da cewa da fari. A kasa-kasa nama thermogenesis abubuwa Thermogenin gina jiki wanda inganta uncoupling numfasawa da oxidative phosphorylation.

Saboda haka, za mu gano cewa, wannan ruwan kasa mai. Yadda za a kara yawan a cikin jikin mutum ya} ar kiba? Don warware wannan matsala, masu bincike amfani ba kawai da kwayoyi, amma kuma m nufin: yin amfani da liposuction ake al'ada fari mai tsantsa, canza shi cikin ruwan kasa, da kuma shukakkun mutumin sake.

Rubuce, domin rashin nauyi, dole ne ka ko dai kara da ayyuka na ruwan kasa abu a yanayinsa, ko ƙara da lambar, ko yin duka biyu na farko da na biyu.

Ciwon Kwararru Association of Amurka imani da cewa ruwan kasa mai dauke da muhimmanci sosai arziki ga marasa lafiya da ciwon sukari da kuma kiba. Haka kuma an san cewa na ayyuka na cikakken mutum ruwan kasa mai aka mur, da kuma adadin daga gare an rage. Saboda haka, a nan gaba shi ne yiwu fitowan da sabon magani da kuma sauran hanyoyin da jari da kuma kunnawa da "amfani" abubuwa a manya.