Cov txheej txheem:
- Puas acinar cells tso cov tshuaj insulin?
- Acinar cells tsim dab tsi?
- Yuav ua li cas cov hlwb tsim cov tshuaj insulin?
- Puas pancreatic acinar cells tso cov tshuaj insulin?
Video: Puas yog acinar cells tsim cov tshuaj insulin?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Tus txiav txiav qhia ob hom parenchymal cov ntaub so ntswg: exocrine acini ducts thiab endocrine islets ntawm Langerhans islets ntawm Langerhans Cov islets ntawm pancreatic lossis islets ntawm Langerhans yog thaj tsam ntawm cov txiav txiav uas muaj nws cov endocrine (Cov tshuaj hormone-producing) hlwb, nrhiav pom nyob rau hauv 1869 los ntawm German pathological anatomist Paul Langerhans. Pancreatic islets yog 1-2% ntawm cov txiav txiav thiab tau txais 10-15% ntawm nws cov ntshav ntws. https://en.wikipedia.org › wiki › Pancreatic_islets
Pancreatic islets - Wikipedia
. Cov tshuaj hormones tsim hauv cov islets ntawm Langerhansyog insulin, glucagon, somatostatin, pancreatic polypeptide, thiab ghrelin.
Puas acinar cells tso cov tshuaj insulin?
Acinar cells muaj nyob rau hauv exocrine pancreas thiab tso cov enzymes digestive rau hauv plab los ntawm lub cev ntawm ducts. Cov kab mob pancreas yog ob lub qog ua haujlwm uas muaj cov yam ntxwv ntawm endocrine thiab exocrine qog. α hlwb secrete glucagon (ua kom qabzib hauv cov ntshav). β cells secrete insulin (txo qis hauv cov ntshav).
Acinar cells tsim dab tsi?
Cov kab mob exocrine (acinar cells) ntawm lub txiav ua rau thiab thauj cov tshuaj uas yuav tawm hauv lub cev los ntawm kev zom zaub movCov tshuaj uas cov hlwb exocrine tsim yog hu ua enzymes. Lawv tau zais hauv duodenum uas lawv pab hauv kev zom zaub mov.
Yuav ua li cas cov hlwb tsim cov tshuaj insulin?
Cov islets ntawm Langerhans yog tsim los ntawm ntau hom hlwb uas tsim cov tshuaj hormones, cov uas nquag tshaj plaws yog beta cells, uas tsim cov tshuaj insulin. Tom qab ntawd cov tshuaj insulin raug tso tawm ntawm lub txiav mus rau hauv cov hlab ntsha kom nws nkag mus rau ntau qhov chaw ntawm lub cev.
Puas pancreatic acinar cells tso cov tshuaj insulin?
Peb tsis ntev los no pom tias cov kab mob pancreatic acinar cais tawm ntawm cov nas laus ib txwm tuaj yeem hloov pauv mus rau hauv cov tshuaj insulin-secreting hlwb hauv vitro.
Pom zoo:
Cov qes twg hauv cov islets ntawm langerhans zais cov tshuaj insulin?
Muaj tsib hom hlwb hauv islets ntawm Langerhans: beta cells zais cov tshuaj insulin; alpha cells alpha cells alpha cells (α-cells) yog endocrine hlwb hauv pancreatic islets ntawm pancreas Lawv tsim txog li 20% ntawm tib neeg islet hlwb synthesizing thiab secreting peptide hormone glucagon, uas elevates cov piam thaj hauv cov ntshav.
Cov kws muag tshuaj puas tsim tshuaj tshiab?
Cov kws muag tshuaj ua haujlwm hauv ntau qhov chaw. Lwm tus ua haujlwm rau cov chaw tsim khoom hauv kev lag luam tshuaj, uas lawv siv lawv cov txuj ci thiab kev paub los pab tsim cov tshuaj tshiab, txhim kho, thiab kho cov tshuaj kho mob . Leej twg tsim tshuaj tshiab?
Puas yog insulin thawb cov poov tshuaj rau hauv cov hlwb?
Insulin hloov cov poov tshuaj rau hauv cov hlwb los ntawm kev txhawb nqa cov haujlwm ntawm Na + -H + antiporter ntawm cell membrane , txhawb kev nkag mus ntawm sodium rau hauv cov hlwb, uas ua rau ua rau Na + -K + ATPase, ua rau muaj hluav taws xob nkag mus.
Puas yog cov macromolecules puas tuaj yeem suav tias yog cov tshuaj organic?
Biological macromolecules tag nrho muaj cov pa roj carbon nyob rau hauv lub nplhaib lossis cov saw hlau, uas txhais tau hais tias lawv raug cais raws li cov organic molecules. Lawv feem ntau kuj muaj hydrogen thiab oxygen, nrog rau nitrogen thiab lwm yam me me .
Cov qog adrenal puas tsim cov tshuaj insulin?
Piv txwv ntawm cov kab mob endocrine suav nrog pancreas, uas tsim cov tshuaj insulin thiab glucagon los tswj cov ntshav-qabzib, cov qog adrenal, uas tsim cov tshuaj hormones xws li epinephrine thiab norepinephrine uas tswj cov lus teb rau kev ntxhov siab, thiab cov thyroid caj pas, uas tsim cov thyroid hormones uas tswj … Lub caj pas twg tsim cov tshuaj insulin?
