Cov txheej txheem:
- Leej twg pom cov islets ntawm Langerhans?
- Yuav ua li cas txhawb kev zais ntawm cov khoom ntawm islet ntawm Langerhans?
- Dab tsi yog 3 lub hlwb loj hauv pancreas?
- Lub cev twg hauv tib neeg lub cev muaj cov islets ntawm Langerhans?
Video: James ua noj puas pom cov islets ntawm langerhans?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
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.
Leej twg pom cov islets ntawm Langerhans?
Lub npe Paul Langerhans yuav, mus ib txhis, cuam tshuam nrog ob qhov kev tshawb pom uas nws tau tsim: cov islets ntawm Langerhans hauv cov txiav thiab cov hlwb uas nws pom hauv daim tawv nqaij. Ua haujlwm hauv chav kuaj ntawm Prof.
Yuav ua li cas txhawb kev zais ntawm cov khoom ntawm islet ntawm Langerhans?
Homeostasis ntawm ntshav qabzib yog tswj hwm los ntawm cov tshuaj hormone secretion los ntawm pancreatic islets ntawm Langerhans. Glucose txhawb nqa insulin secretion los ntawm beta-hlwb tab sis inhibits kev tso tawm ntawm glucagon, ib yam tshuaj uas nce ntshav qabzib, los ntawm alpha-cells.
Dab tsi yog 3 lub hlwb loj hauv pancreas?
Tus tib neeg tus txiav txiav muaj txog 1 lab islets. Cov islets muaj plaub hom cell, ntawm peb ( alpha, beta, thiab delta hlwb) tsim cov tshuaj hormones tseem ceeb; thib plaub (C cells) tsis paub ua haujlwm.
Lub cev twg hauv tib neeg lub cev muaj cov islets ntawm Langerhans?
Islets ntawm Langerhans yog cov kob ntawm cov kab mob endocrine tawg thoob plaws tus txiav txiav.
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.
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 .
Dab tsi yog qhov txawv ntawm kev pom tsis pom thiab pom tsis pom ntau dua?
Kev muaj peev xwm tawm tsam yam tsis muaj qhov kawg ntawm kev sau ntawv vs kev tuaj yeem cuam tshuam rau lwm tus neeg kuj yog qhov sib txawv. Qhov tseem ceeb Invisibility yog "qhov tseeb nrhiav / nkaum / mus ncig tsis pom" qhov twg Qhov Kev Pom Zoo Tshaj Plaws yog ntau ntawm kev sib ntaus sib tua Puas pom qhov tsis pom kev ua haujlwm ntawm kev pom tsis pom ntau dua?
Cov qog endocrine twg muaj cov islets ntawm langerhans?
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?
Cov ntsiab lus ntawm kev tshawb pom cov lus xaus thiab cov lus pom zoo yog dab tsi?
Kev txhais lus los ntawm tus kws tshawb fawb txog qhov tseem ceeb ntawm qhov kev tshawb pom ntawmib txoj haujlwm tshawb fawb rau cov neeg siv khoom lag luam, nrog rau cov lus pom zoo rau kev nqis tes ua . Cov ntsiab lus ntawm kev tshawb pom thiab qhov xaus yog dab tsi?
