Cov qog endocrine twg muaj cov islets ntawm langerhans?

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Cov qog endocrine twg muaj cov islets ntawm langerhans?
Cov qog endocrine twg muaj cov islets ntawm langerhans?

Video: Cov qog endocrine twg muaj cov islets ntawm langerhans?

Video: Cov qog endocrine twg muaj cov islets ntawm langerhans?
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Cov islets ntawm Langerhans, qhov endocrine ntawm pancreas, nyob ~ 4.5% ntawm qhov ntim ntawm tib neeg tus txiav, thiab lawv muaj peb qhov loj (α-, β. -, thiab δ-cells) thiab ob tug me (PP- thiab ε-cells) secretory cell hom.

Cov qog twg hauv qab no muaj cov islets ntawm Langerhans?

Pancreas-Islets ntawm Langerhans.

Puas yog cov islets ntawm Langerhans lub qog endocrine?

Islets ntawm Langerhans yog Islands ntawm endocrine cells tawg thoob plaws hauv lub txiav. Ib tug xov tooj ntawm cov kev tshawb fawb tshiab tau taw qhia rau lub peev xwm rau kev hloov pauv ntawm cov hlwb uas tsis yog-β islet mus rau insulin-tsim β-hlwb kom ntxiv β-cell loj raws li kev kho mob ntshav qab zib.

Cov islets ntawm Langerhans caj pas nyob qhov twg?

Islets ntawm Langerhans, tseem hu ua cov Islands tuaj ntawm Langerhans, tsis xwm yeem zoo li thaj tsam ntawm cov ntaub so ntswg endocrine nyob nyob rau hauv lub txiav ntawm feem ntau vertebrates. Lawv tau muab npe rau tus kws kho mob German Paul Langerhans, uas tau piav qhia thawj zaug hauv xyoo 1869. Cov tib neeg lub cev ib txwm muaj txog 1 lab islets.

Cov hlwb ua li cas los ntawm cov islets ntawm Langerhans?

Cov islets ntawm Langerhans muaj plaub hom cell uas txhua tus zais peptide sib txawv: alpha cells secreteglucagon, beta cells secrete insulin, delta cells secrete somatostatin, thiab P (F) Cov cell secrete pancreatic polypeptide.

Pom zoo:

Vim li cas cov qog endocrine hu ua qog tsis muaj qog?

Vim li cas cov qog endocrine hu ua qog tsis muaj qog?

Cov qog endocrine tsis muaj ducts nqa lawv cov khoom mus rau qhov chaw. Lawv hu ua ductless qog. Lo lus endocrine yog muab los ntawm Greek lo lus "endo," lub ntsiab lus nyob rau hauv, thiab "krine," txhais tau tias cais los yog secrete .

James ua noj puas pom cov islets ntawm langerhans?

James ua noj puas pom cov islets ntawm langerhans?

Cov islets ntawm Langerhans tsis tau pom los ntawm James Cook, vim lawv tsis yog thaj chaw thaj chaw - lawv yog ib feem ntawm peb lub cev. Cov islets ntawm pancreatic lossis islets ntawm Langerhans yog pancreatic hlwb uas tsim cov tshuaj insulin .

Cov qes twg hauv cov islets ntawm langerhans zais cov tshuaj insulin?

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.

Puas yog islets ntawm langerhans ib caj pas?

Puas yog islets ntawm langerhans ib caj pas?

Islets ntawm Langerhans ua ua lub qog endocrine, thiab yog cov ntsiab lus ntawm tshooj no. Cov molecules sib txawv yog tsim los ntawm ntau hom cell ntawm cov islets ntawm Langerhans. Qhov tseem ceeb β-hlwb ntawm cov islets ntawm Langerhans tsim cov tshuaj insulin polypeptide .

Qhov twg ntawm cov no tsim los ntawm cov qog ntshav qog ntshav?

Qhov twg ntawm cov no tsim los ntawm cov qog ntshav qog ntshav?

2. Lymphocytes tsim los ntawm cov qog ntshav qog ntshav. Hematopoietic stem cells-cov qia hlwb uas muaj ntau lub zog uas ua rau tag nrho cov qe ntshav sib txawv rau hauv myeloid thiab lymphoid progenitor cells. Cov qe ntshav liab, platelets, thiab cov qe ntshav dawb myeloid (granular thiab agranular) yog los ntawm myeloid progenitor cells .