Video: Cov ntshav siab hauv cov hlab ntsha yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Venous siab yog vascular siab hauv a leeg los yog lub plawv atria. Nws yog qis dua arterial siab , nrog rau qhov tseem ceeb ntawm 5 mmHg nyob rau sab xis atrium thiab 8 mmHg nyob rau sab laug atrium.
Ntawm no, puas yog ntshav siab hauv cov hlab ntsha?
Cov hlab ntsha muaj cov phab ntsa tuab kom lawv tuaj yeem tswj tau siab siab thiab tshaj tawm uas ntiab tawm koj ntshav tawm ntawm koj lub siab. Cov leeg nqa ntshav rov qab los rau koj lub siab los ntawm tag nrho koj lub cev. Cov siab ntawm ntshav rov qab mus rau lub plawv yog tsawg heev, yog li cov phab ntsa ntawm leeg yog thinner ntau dua cov hlab ntsha.
Ib yam li ntawd, ntshav siab npaum li cas hauv cov hlab ntsha? Hauv ntau thaj tsam ntawm lub cev, tus siab nyob rau hauv lub leeg tuaj yeem nce los ntawm kev cog lus ntawm cov leeg pob txha nyob ib puag ncig. Cov txheej txheem no, hu ua lub cev pob txha cov leeg (daim duab 6), pab qis dua siab leeg counteract lub zog ntawm lub ntiajteb txawj nqus, nce siab txav mus ntshav rov qab rau lub siab.
Ntxiv mus, ntshav siab hauv capillaries yog dab tsi?
Capillary siab Lub cev qub capillary siab , ntsuas ntawm qhov apex ntawm cov hlab ntsha loops nrog cov hlab ntsha ntawm lub plawv theem, nyob ntawm 10.5 txog 22.5 mmHg (Daim duab 4). Nws qis dua hauv cov poj niam premenopausal dua li cov poj niam postmenopausal lossis hauv cov txiv neej thiab tsis cuam tshuam nrog brachial artery ntshav siab.
Dab tsi yog qhov tseem ceeb tshaj systolic lossis diastolic ntshav siab?
Peb tau pom qhov ntawd systolic ntshav siab (tus naj npawb sab saum toj lossis siab tshaj ntshav siab thaum lub plawv nyem thiab thawb lub ntshav puag ncig lub cev) yog tseem ceeb dua tshaj diastolic ntshav siab (tus lej hauv qab lossis qis tshaj ntshav siab nruab nrab ntawm lub plawv dhia) vim nws muab lub tswv yim zoo tshaj plaws ntawm koj txoj kev pheej hmoo ntawm
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
Dab tsi yog peb hom hlab ntsha hauv cov hlab ntsha?
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 no yog cov hlab ntshav me me, uas txuas cov hlab ntsha thiab cov leeg. Cov leeg