Video: Puas yog tag nrho cov hlab ntsha sib xyaw?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Lub cev ntawm lub cev ntawm cov neurons sensory yog nyob rau hauv lub dorsal cag ganglion, tab sis lub cev muaj zog neuron cell lub cev nyob rau hauv cov teeb meem grey. Ob lub hauv paus koom ua ke tsim tus txha caj qaum paj hlwb ua ntej lub paj hlwb tawm ntawm kab vertebral. Vim tag nrho tus txha nqaj qaum paj hlwb muaj ob qho tib si sensory thiab lub cev muaj zog, lawv yog tag nrho cov paj hlwb sib xyaw.
Cov lus nug tseem yog, puas yog txhua lub paj hlwb sib xyaw?
Lub paj hlwb ntawm PNS tau muab cais raws li lawv kev koom nrog hauv lub cev lossis lub siab, somatic lossis visceral pathways. Cov paj hlwb sib xyaw muaj ob qho tib si lub cev muaj zog thiab lub cev hnov qab. Hnov paj hlwb muaj feem ntau cov paj hlwb; lawv tsis tshua muaj tshwm sim thiab suav nrog optic thiab olfactory paj hlwb . Tsav paj hlwb muaj cov motor fibers.
Ib yam li ntawd, cov hlab ntsha cranial twg raug cais raws li cov hlab ntsha sib xyaw? Cranial qab haus huv V , VII , IX , thiab X tau txiav txim siab sib xyaw cranial qab haus huv vim muaj cov khoom muaj txiaj ntsig thiab muaj txiaj ntsig zoo nrog ob qho kev nkag siab thiab lub cev muaj zog.
Kuj Paub, dab tsi yog cov paj hlwb sib xyaw?
A cov paj hlwb sib xyaw yog a paj hlwb uas muaj ob qho tib si afferent thiab efferent paj hlwb . Yog li ntawd, sib xyaw paj hlwb muaj nuj nqi kom xa ob qho tib si hnov thiab lub cev
Muaj pes tsawg cranial qab haus huv yog cov paj hlwb sib xyaw?
Tsib
Pom zoo:
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
Puas yog cov hlab ntsha uas muaj oxygenated ntshav lossis cov hlab ntsha?
Cov hlab ntsha tau pom tias yog nqa cov ntshav oxygenated mus rau cov ntaub so ntswg, thaum cov leeg nqa cov ntshav deoxygenated rov qab mus rau lub plawv. Txawm li cas los xij, hauv txoj hlab ntsws, cov hlab ntsha nqa cov ntshav deoxygenated los ntawm lub plawv mus rau lub ntsws, thiab cov hlab ntshav rov qab ntshav los ntawm lub ntsws mus rau lub plawv
Puas yog tag nrho cov hlab ntsha nqa cov ntshav oxygenated thiab cov leeg nqa cov ntshav deoxygenated?
Cov hlab ntsha ua ib feem ntawm lub circulatory system. Cov hlab ntsha nqa cov ntshav oxygenated tawm ntawm lub plawv mus rau cov ntaub so ntswg, tshwj tsis yog cov hlab ntshav hauv lub ntsws, uas nqa ntshav mus rau lub ntsws rau cov pa oxygen (feem ntau cov leeg ntshav nqa cov ntshav deoxygenated mus rau lub plawv tab sis cov leeg hauv ntsws nqa cov ntshav oxygenated ib yam)
Koj tuaj yeem qhia qhov sib txawv ntawm cov hlab ntsha thiab cov hlab ntsha li cas?
Cov hlab ntshav yog cov hlab ntshav ua lub luag haujlwm nqa cov pa oxygen ntau ntawm lub plawv mus rau lub cev.Cov leeg ntshav yog cov hlab ntshav uas nqa cov ntshav qis inoxygen los ntawm lub cev rov mus rau lub plawv forreoxygenation