Video: Cov tshuaj twg ua rau cov hlab ntsha puas ntsoog?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ib qho ntxiv, cov pov thawj qhia pom tias cov poj niam rog rog, tswj ntshav qab zib tsis zoo, lossis ua qee yam tshuaj tua kab mob cov tshuaj, xws li phenytoin (Dilantin), carbamazepine (Tegretol), thiab valproic kua qaub (Depakote), lossis antifolate (xws li aminopterin) muaj kev pheej hmoo ntau dua li lwm tus poj niam uas muaj menyuam mos nrog
Ua li no, yam tsis txaus ua rau cov hlab ntsha puas?
folic acid
Ib yam nkaus, dab tsi yog suav tias muaj kev pheej hmoo siab rau cov hlab ntsha puas ntsoog? Cov poj niam muaj kev pheej hmoo ntxiv ntawm kev muaj menyuam hauv plab nrog lub cev tsis zoo yog tias: lawv twb muaj menyuam yaus nrog lub cev tsis zoo lawm. lawv lossis lawv tus khub muaj ib tus txheeb ze ze uas yug los nrog cov hlab ntsha tsis zoo. lawv muaj hom 1 (insulin dependant) mob ntshav qab zib (tsis yog cev xeeb tub mob ntshav qab zib )
Los ntawm qhov ntawd, ntau npaum li cas yog cov hlab ntsha puas ntsoog?
NTDs tshwm sim kwv yees li ntawm 3, 000 cev xeeb tub txhua xyoo hauv Tebchaws Meskas. Cov poj niam Hispanic muaj feem ntau dua li cov poj niam tsis yog neeg Hispanic kom muaj menyuam nrog NTD. Qhov thib ob tshaj plaws ntau NTDs yog spina bifida thiab anencephaly. Spina bifida cuam tshuam txog li 1, 500 tus menyuam yaus ib xyoos hauv Tebchaws Meskas.
Nyob rau theem twg ntawm cev xeeb tub ua rau cov hlab ntsha puas ntsoog tshwm sim?
Nruab nrab ntawm 17th thiab 30th hnub tom qab xeeb menyuam (lossis 4 txog 6 lub lis piam tom qab thawj hnub ntawm tus poj niam = lub cev ntas zaum kawg) lub sij hawm ), ua cev nef cov ntaub ntawv hauv lub embryo (tsim menyuam) thiab tom qab ntawd kaw. Cov cev nef tom qab dhau los ua tus menyuam = s tus txha caj qaum, qaum, lub hlwb , a luj.
Pom zoo:
Cov hlab ntsha qis hauv cov hlab ntsha ntws mus rau qhov twg?
Brachiocephalic leeg
Hom hlab ntshav twg txuas cov hlab ntsha thiab cov hlab ntshav?
Hom hlab ntsha Capillaries yog feeb nyias-walled hlab ntsha uas txuas cov hlab ntsha thiab venules; Nws yog los ntawm cov capillaries uas cov as-ham thiab cov pov tseg tau pauv ntawm cov ntshav thiab cov ntaub so ntswg ntawm lub cev
Cov hlab ntsha thiab cov hlab ntsha nyob qhov twg?
Txawm hais tias txoj hlab ntsha yog ib txwm ntseeg tias taug kev hauv qhov zawj ntawm qhov tsis zoo ntawm tus tav nrog rau cov hlab ntsha thiab cov leeg leeg, cov hlab ntsha kuj tseem tuaj yeem nyob nruab nrab ntawm cov tav. Cov paj hlwb intercostal nyob tob rau hauv cov leeg nqaij intercostal thiab sab nraud rau lub pleura
Cov hlab ntsha hlab ntsha thiab cov hlab ntshav muaj dab tsi?
Cov hlab ntsha nqa ntshav tawm ntawm lub plawv; Lub ntsiab hlab ntsha yog aorta. Capillaries nqa ntshav tawm ntawm lub cev thiab pauv cov as-ham, pov tseg, thiab oxygen nrog cov ntaub so ntswg ntawm qib cellular. Cov leeg ntshav yog cov hlab ntshav uas coj cov ntshav rov qab los rau hauv lub plawv thiab tso ntshav tawm ntawm cov kabmob thiab cov ceg
Puas yog Neuroglia tsim cov hlab ntsha hauv cov hlab ntsha hauv nruab nrab cov hlab ntsha?
Muaj plaub hom neuroglia pom nyob hauv nruab nrab lub paj hlwb: Astrocytes - tswj cov ntshav lub hlwb teeb meem thiab khaws cov tshuaj ib puag ncig los ntawm kev siv cov ions rov qab thiab cov tshuaj xa xov mus rau lub cev. Oligodendrocytes - myelinate axons nyob rau hauv lub hauv nruab nrab lub paj hlwb thiab muab tag nrho cov txheej txheem txheej txheem