Qhov sib txawv tseem ceeb ntawm cov thyroid follicle thiab colloid yog cov thyroid follicle secretes thyroid hormones thaum colloid yog cov kua dej pom hauv cov thyroid follicle.
YCov thyroid caj pas yog cov qog endocrine. Nws nyob rau hauv lub anterior feem ntawm lub caj dab qis thiab hauv qab lub larynx. Cov thyroid caj pas secretes cov tshuaj hormones, thyroxine thiab triiodothyronine, uas yog ib qho tseem ceeb rau kev loj hlob thiab metabolism hauv lub cev. Lub caj pas muaj ob lub lobes uas nyob ntawm ob sab ntawm lub trachea thiab txuas los ntawm cov ntaub so ntswg hu ua isthmus. Cov lobes thiab isthmus muaj cov hnab me me globular hu ua thyroid follicles. Cov follicles no muaj cov kua dej hu ua colloid.
YThyroid Follicle yog dab tsi?
Thyroid follicle yog cov qauv thiab kev ua haujlwm ntawm cov thyroid caj pas. Nws secretes cov thyroid hormones - thyroxine thiab triiodothyronine. Cov lobes ntawm cov thyroid caj pas thiab cov isthmus muaj cov hnab me me globular hu ua thyroid follicles. Lawv yog spherical nyob rau hauv cov duab, thiab phab ntsa muaj cuboidal epithelial hlwb hu ua follicular hlwb. Cov hlwb follicular tsim ib txheej ntawm cov hlwb, uas ua rau cov qauv sab nraud ntawm cov thyroid follicle. Qhov chaw sab hauv nruab nrab ntawm cov hlwb follicular yog lub follicular lumen. Follicular cell membrane muaj thyrotropin receptors uas khi rau cov thyroid-stimulating hormone. Lwm cov tshuaj hormones pom nyob rau hauv qab daus daim nyias nyias ntawm cov thyroid follicle yog calcitonin-producing parafollicular cells.
Daim duab 01: Thyroid Follicular Cells
Cov hlwb follicular rub iodide thiab amino acids los ntawm cov ntshav. Tom qab ntawd nws ua ke thyroglobulin thiab thyroperoxidase thiab zais lawv rau hauv cov thyroid follicles nrog iodide. Txhawm rau kom cov xwm txheej no tshwm sim, cov thyroid follicles muaj cov qauv tshwj xeeb thiab tshwj xeeb thiab suav nrog cov khoom siv ntawm tes tshwj xeeb, uas suav nrog thyroglobulin, thyroid peroxidase, thiab Na + / I- symporter.
Colloid yog dab tsi?
Cov kua dej uas sau cov thyroid follicles hu ua colloid. Colloid muaj prohormone thyroglobulin. Kev tsim cov tshuaj hormones yog nyob ntawm iodide, uas yog qhov tseem ceeb thiab tshwj xeeb rau cov tshuaj hormones. Colloid yog ib qho proteinaceous depot ntawm cov thyroid hormone percussor. Nws yog ib qho tsis muaj zog ua ntej ntawm thyroxine thiab triiodothyronine, uas yog tsim los ntawm glycoprotein thyroglobulin. Iodine khi rau cov seem ntawm tyrosine ntawm thyroglobulin.
Daim duab 02: Colloid Iron Stain
Cov thyroid follicle lumen muaj cov colloid thiab ua raws li kev cia rau cov thyroid hormones. Thaum cov tshuaj hormones xav tau, colloid reabsorbs thyroglobulin los ntawm follicular lumen mus rau hauv lub hlwb. Thyroglobulin splits rau hauv nws cov khoom, uas suav nrog ob lub tshuaj hormones thyroxine thiab triiodothyronine. Qhov no tso cov tshuaj hormones, thiab lawv thauj thoob plaws lub epithelium ntawm follicles thiab tso rau hauv cov ntshav capillaries uas nyob ib sab ntawm lub epithelium. Kev txawv txav xws li colloid nodules tshwm sim thaum ib lossis ntau qhov kev loj hlob tshwm sim hauv cov thyroid cov ntaub so ntswg. Cov no yog benign; txawm li cas los xij, thiab lawv loj tuaj. Cov colloid nodules tsis kis dhau ntawm cov thyroid caj pas.
Dab tsi zoo sib xws ntawm Thyroid Follicle thiab Colloid?
- Thyroid follicle thiab colloid nyob rau hauv cov thyroid caj pas.
- Ob leeg koom nrog kev tsim cov thyroid hormones: thyroxine thiab triiodothyronine.
- Ntxiv mus, qhov txawv txav ntawm ob qho tib si tuaj yeem ua rau metabolic tsis ua haujlwm.
Qhov txawv ntawm Thyroid Follicle thiab Colloid yog dab tsi?
Y Thyroid follicle secretes thyroid hormones, thyroxine thiab triiodothyronine, thaum colloid yog cov kua dej nyob hauv cov thyroid follicle. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov thyroid follicle thiab colloid. Qhov ntawd yog; thyroid follicle tsim thyroglobulin thaum lub colloid khw thyroglobulin. Ntxiv mus, thaum staining, thyroid follicles qhia cov ntshav-xim hlwb thaum lub colloid qhia cov xim liab liab.
Cov ntawv qhia hauv qab no nthuav tawm qhov sib txawv ntawm cov thyroid follicle thiab colloid nyob rau hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Thyroid Follicle vs Colloid
thyroid caj pas yog ib qho qog endocrine. Nws muaj ob lub lobes uas muaj cov hnab me me globular hu ua thyroid follicles. Cov thyroid follicle secretes cov thyroid hormones, thyroxine thiab triiodothyronine, thaum lub colloid yog cov kua dej hauv cov thyroid follicle. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov thyroid follicle thiab colloid. Cov thyroid follicles yog cov kab mob epithelial yooj yim. Colloid, ntawm qhov tod tes, yog cov kua dej glycoprotein-nplua nuj uas nyob hauv follicular lumen thiab muaj cov prohormone thyroglobulin.
