Video: Dorsum Sellae yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov qab muag yog txheej txheej xwm txheej ntawm cov pob txha sphenoid. Nws ascends superiorly los ntawm lub posterior ib feem ntawm lub sphenoid lub cev los tsim lub posterior phab ntsa ntawm lub muag turcica.
Ua li no, Sella nyob qhov twg?
Cov muag yog turcica nyob nyob rau hauv cov pob txha sphenoid qab chiasmatic zawj thiab tuberculum sellae. Nws belongs rau nruab nrab cranial fossa. Cov muag turcica qhov tsis zoo tshaj plaws yog hu ua hypophyseal fossa ("lub rooj zaum ntawm lub eeb"), thiab muaj cov qog pituitary (hypophysis).
Tom qab, lo lus nug yog, dab tsi yog lub sella turcica? Cov sella turcica yog midline kev nyuaj siab nyob rau hauv cov pob txha sphenoid uas muaj pituitary caj pas thiab qhov distal ntawm lub pituitary stalk. Cov seb is npog los ntawm kev xav txog lub dural (piv txwv li, diaphragma sellae) saum toj no uas nyob ntawm lub suprasellar cistern.
Hauv qhov no, Tuberculum Sellae nyob qhov twg?
Cov tuberculum muag tsim cov phab ntsa hauv ntej ntawm muag turcica, uas yog lub tsev pituitary caj pas. Nws yog ib qho elongated ridge nyob tam sim tom qab mus rau chiasmatic zawj, yog li muaj feem xyuam rau optic chiasm thiab anterior feem ntawm optic tracts.
Vim li cas lub sella turcica tseem ceeb?
Thaum lub sij hawm embryological kev loj hlob, tus muag turcica cheeb tsam yog lub ntsiab lus tseem ceeb rau kev tsiv teb tsaws ntawm neural crest hlwb mus rau frontonasal thiab maxillary kev loj hlob teb. Cov paj hlwb neural tau koom nrog hauv kev tsim thiab txhim kho muag turcica thiab hniav.
Pom zoo:
Dab tsi yog glycoprotein dab tsi yog ib qho ntawm kev siv glycoproteins?
Glycoproteins yog cov protein uas muaj cov oligosaccharide saw (glycans) covalently txuas nrog cov amino acid sab-saw. Glycoproteins kuj tseem yog ib qho tseem ceeb ua ke ntawm cov protein, uas lawv ua lub luag haujlwm hauv kev sib cuam tshuam ntawm tes -cell
Dab tsi yog cov khoom siv hauv lub cev zom zaub mov thiab lawv lub luag haujlwm yog dab tsi?
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Dab tsi yog qhov kev nkag siab tsis tu ncua thiab dab tsi yog qhov loj me me qhov ntev xim tsis tu ncua zoo li qub)?
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Qhov ntswg dorsum yog dab tsi?
Lub qhov ntswg dorsum tseem hu ua lub qhov ntswg yog ciam teb nruab nrab ntawm lub hauv paus thiab qhov taub ntawm lub qhov ntswg uas nyob hauv qhov profile tuaj yeem muaj ntau yam zoo li tus. Ala ntawm lub qhov ntswg (ala nasi, tis ntawm lub qhov ntswg) yog qhov qis dua ib sab ntawm sab nraud ntawm lub qhov ntswg sab nrauv, zoo li los ntawm cov pob txha alar thiab npog hauv cov ntaub so ntswg sib txuas