Cov kab mob endocrine muaj cov kab mob pancreatic, uas tso tawm
glucagons thiab insulin . Alpha cells Alpha cells Alpha cells (α-cells) yog endocrine cells 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. https://en.wikipedia.org › wiki › Alpha_cell
Alpha cell - Wikipedia
nyob rau hauv cov kab mob pancreatic zais cov tshuaj hormone glucagons hauv cov lus teb rau qhov qis qis ntawm cov piam thaj hauv cov ntshav.
Yuav ua li cas cov tshuaj hormones secreted los ntawm pancreatic islets?
Cov tshuaj hormones tsim tawm hauv cov islets ntawm Langerhans yog insulin, glucagon, somatostatin, pancreatic polypeptide, thiab ghrelin. Cov tshuaj hormones pancreatic secreted los ntawm alpha, beta, delta, gamma, thiab epsilon cells.
Kev ua haujlwm ntawm pancreatic islets yog dab tsi?
Cov kab mob endocrine yog tsim los ntawm cov kob me me ntawm endocrine (endo=hauv) cov hlwb. Cov Islands tuaj hu ua cov islets ntawm Langerhans. Cov hlwb endocrine no tso cov tshuaj hormones xws li insulin thiab glucagon mus rau hauv cov ntshav, uas tswj cov qib qabzib (glucose) hauv cov ntshav.
Puas pancreatic cells tso cov tshuaj hormones?
Tus pancreas tsim cov tshuaj hormones hauv nws cov 'endocrine' cells. Cov hlwb no tau sib sau ua ke hauv pawg hu ua islets ntawm Langerhans thiab saib xyuasdab tsi tshwm sim hauv cov ntshav. Tom qab ntawd lawv tuaj yeem tso cov tshuaj hormones ncaj qha rau hauv cov ntshav thaum tsim nyog.
Dab tsi yog islets ntawm Langerhans zais cia?
Muaj tsib hom hlwb hauv cov islets ntawm Langerhans: beta hlwb secrete insulin; alpha hlwb secrete glucagon; PP hlwb secrete pancreatic polypeptide; delta hlwb secrete somatostatin; thiab epsilon hlwb secrete ghrelin.
