2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ntshav tau muab nkag rau lub hlwb, ntsej muag, thiab tawv taub hau ntawm ob lub nkoj loj: sab xis thiab sab laug ntau carotid cov hlab ntsha thiab txoj cai thiab sab laug vertebral hlab ntsha. Cov ntau carotid cov hlab ntsha muaj ob txoj kev sib faib. Cov sab nrauv carotid cov hlab ntsha muab lub ntsej muag thiab tawv taub hau nrog ntshav.
Thiaj li, cov hlab ntsha twg muab cov ntshav rau lub hlwb quizlet?
Lub plawv tso pa oxygen ntshav rau hauv aorta, thiab ntshav tau faib los ntawm aorta mus rau ob lub hlab ntshav subclavian (ib qho ntawm txhua sab). txuas ntxiv tawm mus rau sab hauv cov hlab ntsha carotid thaum lawv nkag mus rau hauv lub hlwb dhau ntawm lub hauv paus ntawm pob txha taub hau. tshwm sim los ntawm ob txoj hlab ntshav subclavian uas nthuav tawm los ntawm lub plawv.
Kuj Paub, dab tsi yog cov hlab ntsha tseem ceeb hauv lub hlwb? Cov hlab ntsha loj ntawm lub paj hlwb suav nrog cov hlab ntshav zoo tshaj thiab qis dua, cov hlab ntshav nruab nrab sab saud, cov hlab ntshav zoo (ntawm Galen), cov hlab ntshav sab hauv, nrog rau cov leeg zoo thiab qis dua. Lawv ntws mus rau hauv dural venous qhov ntswg uas yog: Superior sagittal sinus.
Tsis tas li, cov hlab ntsha twg muab cov ntshav oxygenated rau lub hlwb?
Cov hlab ntsha loj muab koj lub paj hlwb suav nrog sab hauv carotid leeg , uas yog ib ceg ntawm nquag carotid leeg uas muab koj lub hlwb nrog cov ntshav oxygenated; cov anterior cerebral hlab ntsha , uas yog ib ceg ntawm sab hauv carotid leeg muab lub paj hlwb ua ntej nrog cov ntshav oxygenated; thiab cov
Cov hlab ntsha twg nkag mus rau hauv lub hlwb los ntawm cov kwj dej carotid?
Sab hauv Carotid Artery
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