Umsebenzi we-Cerebellum ekuhlanganiseni ukunyakaza I-cerebellum, noma eyaziwa ngokwezokwelapha ngokuthi i-cerebellum, iyingxenye ebalulekile yesimiso sezinzwa somuntu. Nakuba ihlanganisa cishe u-10% womthamo wobuchopho, idlala indima ebalulekile emisebenzini ehlukahlukene, ikakhulukazi leyo ehlobene nokuxhumanisa ukunyakaza. Lesi sihloko sihlose ukuhlola… Funda kabanzi
Indima Ye-Glucagon Emithethweni Yokulawulwa Kwe-Glucose Egazini I-glucose yegazi iyisici esibalulekile se-homeostasis yomzimba womuntu, futhi amazinga afanele e-glucose ayadingeka ekusebenzeni okujwayelekile kwamaseli nezitho zomzimba. I-homeostasis ye-glucose egazini ilawulwa ama-hormone ahlukahlukene, elinye lawo yi-glucagon. I-Glucagon, evame ukuthola ukunakwa okuncane kune-insulin, idlala indima ebalulekile ekugayweni kwe-glucose, ikakhulukazi... Funda kabanzi
Izindlela Zokusebenza Kwama-Cellular Receptors Ama-cell receptors adlala indima ebalulekile ekuxhumaneni phakathi kwamangqamuzana kanye nokulawulwa kwezinqubo ezahlukahlukene zezinto eziphilayo emzimbeni. Lawa ma-receptor asebenza njengabamukeli bezimpawu ezivela ngaphandle kweseli—njengama-hormone, ama-neurotransmitter, namanye ama-molecule—futhi ahumusha lawo masignali abe yizimpendulo zamaseli. Kulesi sihloko, sizohlola izindlela zokusebenza kwama-cell receptors, izinhlobo… Funda kabanzi
Isakhiwo Nomsebenzi Wezinhlayiya Zegazi Ama-platelet, noma ama-platelet egazi, ayizingcezu ezincane zamaseli ezitholakala egazini futhi ezihilelekile enqubweni yokujiya kwegazi (i-hemostasis). Ayingxenye ebalulekile yesistimu yokujikeleza kwegazi yomuntu, edlala indima ebalulekile ekumiseni ukopha nasekuqaliseni ukuphulukiswa kwenxeba. Kulesi sihloko, sizoxoxa ngokujulile… Funda kabanzi
Umehluko Phakathi kwe-Diastole ne-Systole Ukuqonda ukuthi inhliziyo isebenza kanjani ngesigqi kubalulekile ekuqondeni ukusebenza kwenhliziyo yomuntu. Izigaba ezimbili ezibalulekile zomjikelezo wenhliziyo ezivame ukuthola ukunakwa yi-diastole ne-systole. Lezi zigaba ezimbili zimelela izimo ezimbili eziyinhloko zenhliziyo njengoba ipompa igazi emzimbeni wonke. I-Diastole ne-systole ziyizingxenye ezibalulekile zomsebenzi wenhliziyo… Funda kabanzi
Izinzuzo Zokuzivocavoca Kwesistimu Yokuphefumula Ukuzivocavoca kunezinzuzo eziningi zezempilo, kusukela ekuthuthukiseni ukufaneleka komzimba kuya ekuthuthukiseni inhlalakahle yengqondo. Esinye isici sempilo esizuzwa kakhulu ngumsebenzi womzimba uhlelo lokuphefumula. Uhlelo lokuphefumula luyiqoqo lezitho nezakhiwo ezisebenza ekushintshisaneni kwegesi, zithatha umoya-mpilo futhi zikhiphe i-carbon dioxide. Uma sizivocavoca, … Funda kabanzi
Umsebenzi we-Microvilli Emathunjini Amancane — Uhlelo lokugaya ukudla lomuntu lungenye yezinhlelo ezibaluleke kakhulu emzimbeni wethu, olusebenza ukugaya ukudla nokumunca izakhamzimba ezidingekayo empilweni nasempilweni. Esinye sezingxenye ezibaluleke kakhulu zesistimu yokugaya ukudla umathumbu amancane. Ngaphakathi emathunjini amancane, isakhiwo se-microvilli sidlala indima ebalulekile ekuqinisekiseni ukuthi umzimba… Funda kabanzi
Kungani I-Hypoxia Iyingozi Kubantu I-Hypoxia yisimo esibucayi sezokwelapha esenzeka lapho umzimba, noma ingxenye yomzimba, ingatholi umoya-mpilo owanele ukuze isebenze kahle. I-oxygen ibalulekile empilweni, futhi wonke amaseli emzimbeni womuntu ayayidinga ukuze iphile. Umzimba womuntu uguqukele ekusebenziseni umoya-mpilo ezinqubweni ze-metabolic… Funda kabanzi
Umehluko Phakathi Kwemisipha Enezingqimba Nezibushelelezi Imisipha iyizicubu zomzimba ezibangela ukunyakaza kwezingxenye zomzimba ezahlukahlukene ezintweni eziphilayo. Esimisweni semisipha yomuntu, imisipha ingahlukaniswa ngezinhlobo ezintathu eziyinhloko: imisipha yamathambo, imisipha ebushelelezi, kanye nemisipha yenhliziyo. Nakuba zonke lezi zinhlobo zemisipha zidlala indima ebalulekile emsebenzini we… Funda kabanzi
Imiphumela Yokucindezeleka Kwegazi Ekulimaleni Kwezitho Isingeniso Ukucindezeleka kwegazi, noma umfutho wegazi ophakeme, kungenye yezifo ezivame kakhulu emhlabeni jikelele. Ngokusho kwe-World Health Organization (WHO), abantu abangaphezu kwezigidi eziyinkulungwane bahlushwa ukucindezeleka kwegazi, futhi ukusabalala kwayo kuyaqhubeka nokukhula. Ukucindezeleka kwegazi kuvame ukubhekwa "njengombulali othule" ngoba kuvame ukungabonakali izimpawu ezicacile kuze kube yilapho kunezinkinga ezinkulu... Funda kabanzi