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. https://en.wikipedia.org › wiki › Alpha_cell
Alpha cell - Wikipedia
zais glucagon; PP hlwb secrete pancreatic polypeptide; delta hlwb secrete somatostatin; thiab epsilon hlwb secrete ghrelin.
Yuav ua li cas hom cell secrete 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.
Cov hlwb twg tsim Langerhans ntawm pancreas los tsim cov tshuaj peptide insulin?
Insulin yog peptide hormone tsim los ntawm β-hlwb ntawm islets ntawm Langerhans ntawm pancreas.
Lub cell ntawm pancreas zais cov tshuaj insulin?
Insulin tso tawm los ntawm 'beta cells' hauv cov islets ntawm Langerhans teb rau zaub mov. Nws lub luag haujlwm yog txo qis cov piam thaj hauv cov hlab ntsha thiab txhawb kev khaws cov piam thaj hauv cov rog, cov leeg, daim siab thiab lwm yam ntaub so ntswg hauv lub cev. 'Alpha cells' hauv cov islets ntawm Langerhans tsim lwm yam tshuaj hormones tseem ceeb, glucagon.
Puas beta islet cells tsim cov tshuaj insulin?
Lub luag haujlwm ntawm beta hlwb yog dab tsi? Lub luag haujlwm tseem ceeb ntawm beta cell yog tsim thiab tso cov tshuaj insulin- cov tshuaj hormones lub luag haujlwm tswj cov qib qabzib hauv cov ntshav.
