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.
