2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Dural venous sinuses yog venous channels nyob intracranally ntawm ob txheej ntawm dura mater (endosteal txheej thiab meningeal txheej)thiab tuaj yeem xav tau raws li cov hlab ntsha epidural. Tsis zoo li lwm cov hlab ntsha hauv lub cev, lawv khiav ib leeg thiab tsis sib npaug rau cov hlab ntsha.
Dural sinuses nyob qhov twg?
Lub dural venous sinuses dag nruab nrab ntawm cov txheej txheem periosteal thiab meningeal ntawm dura mater. Lawv yog qhov zoo tshaj plaws xav txog kev sau cov ntshav, uas tso rau hauv nruab nrab paj hlwb, lub ntsej muag, thiab tawv taub hau. Tag nrho cov dural venous sinuses thaum kawg ntws mus rau hauv cov leeg jugular leeg.
Dural sinuses nyob qhov twg?
Dural venous sinuses yog nyob rau hauv lub endothelium ntawm endosteal thiab meningeal txheej ntawm dura mater. Lawv tau txais cov ntshav los ntawm lub hlwb, pob txha taub hau, lub orbit, thiab pob ntseg. Tag nrho cov ntshav ntawm lub hlwb mus rau cov sinuses thiab nws thiaj li muab pov tseg rau hauv cov hlab ntsha hauv jugular.
cerebral venous sinus nyob qhov twg?
Cerebral Venous Sinus Thrombosis (CVST) yog ib hom ntshav khov uas tsis tshua muaj tshwm sim hauv cov hlab ntsha hauv koj lub hlwb. Qhov no yog cov txheej txheem ntawm cov leeg pom nruab nrab ntawm cov txheej ntawm dura mater - tawv txheej txheej ntawm koj lub hlwbuas nyob ncaj qha hauv qab koj pob txha taub hau.
Sagittal dural sinus nyob qhov twg?
Qhov ntau yam dural venous sinus tam sim no tau piav qhia. Tus superiorsagittal sinus pom nyob rau hauv ciam teb sab sauv ntawm falx cerebri thiab pib ntawm crista galli. Lub superior sagittal sinus yog noj los ntawm cov ntshav los ntawm superior cerebrals hlab ntsha thiab xaus ntawm lub confluence ntawm sinuses nyob rau hauv lub occipital protuberance.
Pom zoo:
Qhov khoom nyob rau pem hauv ntej ntawm lub lens diverging nyob qhov twg?
Teb: Dav hlau daim iav Dav Hlau Daim iav Rau lub teeb rays tawm lub dav hlau daim iav, lub lub kaum sab xis ntawm kev xav sib npaug ntawm lub kaum sab xis ntawm qhov xwm txheej. … Daim duab tsim los ntawm daim iav dav hlau yog ib txwm virtual (lub ntsiab lus tias lub teeb rays tsis yog los ntawm daim duab), upright, thiab ntawm tib lub duab thiab loj npaum li cov khoom nws yog reflecting.
Kev tsis ncaj ncees nyob qhov twg yog qhov hem rau kev ncaj ncees nyob txhua qhov chaw?
Martin Luther King tau hais tias: “Kev tsis ncaj ncees nyob txhua qhov chaw yog kev hem thawj rau kev ncaj ncees nyob txhua qhov chaw. Peb raug ntes nyob rau hauv ib tug inescapable network ntawm kev sib nrig sib pab, khi nyob rau hauv ib lub tsoos tsho ntawm txoj hmoo.
Pyriform sinus nyob qhov twg?
Pyriform sinus nyob nyob rau hauv ib txoj hauj lwm posterolateral nyob rau hauv kev sib raug rau lub larynx. Nws yog ib feem ntawm lub pharynx. Anatomically, nws ciam teb yog cov thyroid pob txha mos thiab thyrohyoid membrane tom qab, thiab cov pob txha mos cricoid thiab aryepiglottic fold medially.
Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg?
Yuav muaj ob lub cev tsis zoo nyob rau hauv lub midbrain. Lawv yog symmetrically positioned, ib tug nyob rau ntawm ob sab ntawm lub midline ntawm lub hlwb, thiab lawv tsim ob lub pob nyob rau hauv lub posterior nto ntawm lub paj hlwb nyob rau hauv qab ntawm lub superior colliculi.
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
