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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Parafollicular cell . Parafollicular hlwb , tseem hu ua C. hlwb , yog neuroendocrine hlwb hauv cov thyroid . Lub luag haujlwm tseem ceeb ntawm cov no cell yog rau zais calcitonin hmoov. Lawv yog nyob ib sab rau ntawm cov thyroid cov hauv paus hniav thiab nyob hauv cov ntaub so ntswg sib txuas.
Hauv qhov no, dab tsi yog cov cell ntawm cov thyroid caj pas?
Cov thyroid cov ntaub so ntswg yog tsim los ntawm ob hom cell: follicular hlwb thiab parafollicular cell . Feem ntau ntawm cov thyroid cov ntaub so ntswg muaj follicular hlwb , uas zais cov iodine-muaj cov thyroid hormones. Lawv suav nrog thyroxine (T4) thiab triiodothyronine (T3).
Ib yam li ntawd, yog cov thyroid caj pas ua los ntawm cov ntaub so ntswg epithelial? Thyroid lobes yog tsim ntawm cov hauv paus plaub hau. Txhua lub hauv paus muaj cov lumen acellular puag ncig los ntawm cov kab lus yooj yim/cuboidal epithelium cov ntaub so ntswg . Qhov yooj yim columnar/cuboidal epithelium cov ntaub so ntswg yog tsim los ntawm follicular hlwb, uas synthesize thiab tso tawm Ob yam tshuaj hormones: triiodothyronine (T3) thiab thyroxine (T4).
Kuj nug, dab tsi yog C cells hauv cov thyroid caj pas?
14 Tus Qauv thiab Kev Ua Haujlwm. C hlwb los yog parafollicular hlwb ntawm cov thyroid , npe tom qab lawv cov khoom zais cia loj (calcitonin), nyob hauv cov thyroid follicles ntawm lub basal yam ntawm lub follicular hlwb thiab hauv qab daus membrane ntawm lub hauv paus lossis tam sim no nyob rau hauv txoj haujlwm parafollicular.
C cells hauv lub cev yog dab tsi?
thyroid caj pas tsim cov calcitonin, uas yog hu ua C hlwb los yog parafollicular hlwb tshwm sim, cais los ntawm cov thyroid thiab tsiv mus nyob rau hauv nws thaum lub sij hawm kev loj hlob ntawm lub embryo.
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