Cov txheej txheem:
Video: Cov hlab ntsha ua dab tsi hauv cov hlab ntshav?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov cov hlab ntsha yog ib feem ntawm circulatory system thiab ua haujlwm thauj ntshav thoob plaws hauv lub cev. Cov hom tseem ceeb tshaj plaws, cov hlab ntsha thiab cov leeg, nqa ntshav deb ntawm los yog mus rau lub plawv, feem. Txhua cov hlab ntsha muaj cov qauv yooj yim tib yam.
Tsuas yog li ntawd, peb hom hlab ntsha hauv cov hlab ntsha yog dab tsi?
Muaj peb yam tseem ceeb ntawm cov hlab ntsha:
- Cov hlab ntsha. Lawv nqa cov ntshav uas muaj oxygen tawm ntawm lub plawv mus rau tag nrho lub cev cov ntaub so ntswg.
- Capillaries. Cov hlab ntshav me no txuas cov hlab ntsha thiab cov leeg.
- Cov leeg. Cov no yog cov hlab ntshav uas coj ntshav rov mus rau lub plawv.
Kuj Paub, yuav ua li cas cov ntshav taug kev los ntawm cov hlab ntshav? Nws muaj lub siab thiab lub ntshav cov nkoj khiav dhau tag nrho lub cev. Cov hlab ntsha nqa ntshav deb ntawm lub plawv; cov leeg nqa nws rov qab mus rau lub siab. Kev nqus pa yog qhov uas cov pa oxygen tshiab peb nqus tau hauv nkag mus rau ntshav . Nyob rau tib lub sijhawm, cov pa roj carbon dioxide raug tso tawm los ntawm ntshav.
Kuj paub yog, dab tsi qhib koj cov hlab ntsha?
A vasodilator yog a cov tshuaj uas ua rau vasodilation, a ua kom dav ( qhib ) ntawm cov hlab ntsha uas tshwm sim los ntawm kev so ntawm cov nqaij du ntawm cov hlab ntsha.
Cov ntshav ua los ntawm dab tsi?
Koj cov ntshav yog ua los ntawm cov kua thiab cov khoom khib nyiab. Cov kua ua kua, hu ua ntshav ntshav , yog tsim los ntawm dej, ntsev, thiab protein. Ntau tshaj ib nrab ntawm koj cov ntshav yog ntshav ntshav . Ib feem ntawm koj cov ntshav muaj cov qe ntshav liab , cov qe ntshav dawb , thiab cov platelets.
Pom zoo:
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 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
Vim li cas peb thiaj sau cov ntshav los ntawm cov hlab ntsha thiab tsis yog los ntawm cov hlab ntsha?
Cov leeg yuav tsum tau li qub kom cov ntshav ntws mus rau lub plawv. Theses li qub yog qhov tshwj xeeb hauv ob txhais ceg thiab caj npab. Lawv tawm tsam lub ntiajteb txawj nqus los tiv thaiv cov ntshav rov qab los. Cov hlab ntsha tsis xav tau li qub vim tias lub siab los ntawm lub plawv ua kom cov ntshav ntws los ntawm lawv mus rau ib qho
Cov hlab ntsha hauv lub ntsws txawv li cas ntawm cov hlab ntsha hauv nruab nrog cev?
Cov hlab ntsha. Cov hlab ntsha hauv lub ntsws nqa cov ntshav oxygen tsawg los ntawm txoj hlab ntshav ntawm lub plawv mus rau lub ntsws. Cov hlab ntsha hauv lub cev thauj cov ntshav oxygenated los ntawm sab laug ventricle ntawm lub plawv mus rau tag nrho lub cev. Cov leeg