sulcus prechiasmaticus [TA] a furrow nyob rau saum npoo ntawm cov pob txha sphenoid, nyob rau sab xub ntiag ntawm tuberculum sellae; nws lodges optic chiasm.
Chiasmatic sulcus yog dab tsi?
Anatomical Parts
Qhov saum npoo ntawm lub cev ntawm cov pob txha sphenoid yog bounded qab los ntawm ib tug ridge, uas tsim cov anterior ciam teb ntawm ib tug nqaim, transverse groove, lub chiasmatic zawj (optic groove, prechiasmatic sulcus), saum toj thiab tom qab uas yog lub optic chiasma ntawm cranial paj 2 (lub paj hlwb).
Chiasmatic yog dab tsi?
1: kev sib tshuam anatomical lossis decussation - saib optic chiasma. 2: tus ntoo khaub lig-shaped configuration ntawm khub chromatids pom nyob rau hauv lub diplotene ntawm meiotic prophase thiab txiav txim siab lub cytological sib npaug ntawm genetic crossing-over. Lwm cov lus los ntawm chiasma. chiasmatic / ˌkī-əz-ˈmat-ik, ˌkē- / adjective.
YOptic sulcus yog dab tsi?
Kev nyuaj siab ntawm txhua sab ntawm qhov kawg ntawm neural ectoderm (los yog neural tube) ntawm lub embryo. Lub qhov tob tob kom tsim tau lub vesicle optic. Syn. optic sulcus.
Tus tub kawm qhov keyhole yog dab tsi?
Keyhole tub kawm; Iris defect. Coloboma ntawm iris yog ib lub qhov lossis qhov tsis xws ntawm iris ntawm qhov muag. Feem ntau cov colobomas tshwm sim txij thaum yug los (congenital). Cat eye yog ib hom kab mob coloboma. Txhua yam tsis xws luag hauv iris uas tso cai rau lub teeb nkag mus rau lub qhov muag, tsis yog los ntawm cov menyuam kawm ntawv, yog hu ua coloboma.
