2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Tus nqi, lossis nrawm, ntawm cov ntshav ntws sib txawv nrog rau tag nrho cov ntu ntu ntawm cov hlab ntsha. Raws li tag nrho cov ntu ntu ntu ntawm cov hlab ntsha nce, qhov nrawm ntawm kev ntws qis. ntshav ntws qeeb tshaj hauv cov hlab ntsha, uas tso cai rau lub sijhawm pauv cov pa roj thiab cov khoom noj.
Vim li cas cov ntshav ntws qeeb hauv cov hlab ntsha hauv cov hlab ntsha?
Vim li cas cov ntshav khiav qeeb qeeb hauv cov hlab ntsha hauv cov hlab ntsha? Tag nrho cov ntu ntu ntawm cov hlab ntsha ntau tshaj cov hlab ntsha. Kev nrawm ntawm cov ntshav ntws yog thim rov qab mus rau tag nrho cov ntu ntu ntawm cov hlab ntsha. Raws li tag nrho cov ntu ntu ntu nce ntxiv, qhov nrawm ntawm ntws qis.
Vim li cas capillary ntws qeeb?
Txawm tias cov hlab ntsha yog cov hlab ntsha me tshaj plaws hauv txoj kab uas hla, cov ntshav ntws los ntawm lub txaj capillary qeeb. Qhov no yog vim cov capillaries muaj ntau dua li lwm cov hlab ntsha li no lawv tag nrho cov seem hlais loj.
Cov ntshav ntws sai npaum li cas los ntawm cov hlab ntsha?
Raws li cov ntshav txav mus rau hauv cov hlab ntsha, cov hlab ntsha, thiab thaum kawg mus rau lub txaj capillary, tus nqi ntawm kev txav qeeb qeeb mus rau kwv yees 0.026 cm / sec, ib txhiab zaus qeeb dua. tus nqi ntawm kev txav ntawm lub aorta.
Koj ua li cas kom ntshav ntws hauv capillaries?
Nplooj Ntsuab. Nplooj ntsuab zoo li spinach thiab collard zaub yogsiab hauv nitrates, uas koj lub cev hloov mus ua nitric oxide, muaj zog vasodilator. Kev noj zaub mov nplua nuj nitrate tuaj yeem pab txhim kho kev ncig los ntawm kev nthuav cov hlab ntsha, ua rau koj cov ntshav ntws yooj yim dua.
Pom zoo:
Puas antegrade ntws hauv cov hlab ntsha vertebral li qub?
Postoperatively ib tug tshiab Directional Doppler ultrasound kuaj ces pom bilateral li qub (=antegrade) vertebral artery ntshav ntws. Cov txheej txheem uas tsis yog siv tau raug pom tias muaj kev ntseeg siab thiab yuav raug siv los tshuaj xyuas cov neeg mob uas xav tias muaj subclavian steal subclavian steal Tus subclavian steal syndrome (SSS) yog hais txogvascular disorder uas occlusion lossis stenosis ntawm lub subclavian artery proximal to the vertebral artery origin (uas
Cov hlab ntsha twg yog siv los sau ntshav?
The median cubital and cephalic vein cephalic vein Nyob rau hauv tib neeg lub cev, lub cephalic leeg yog ib tug superficial vein nyob rau hauv caj npab. Nws sib txuas lus nrog cov hlab ntsha basilic ntawm qhov nruab nrab cubital leeg ntawm lub luj tshib thiab nyob rau hauv lub fascia superficial raws anterolateral nto ntawm lub biceps.
Cov hlab ntsha puas muaj cov ntshav muaj oxygen?
Cov hlab ntsha (liab) nqa oxygen thiab cov as-ham tawm ntawm koj lub siab, mus rau koj lub cev cov ntaub so ntswg. Cov hlab ntsha (xiav) coj cov ntshav tsis muaj oxygen rov qab mus rau lub plawv. Cov hlab ntsha pib nrog lub aorta, cov hlab ntsha loj tawm hauv plawv.
Puas yog cov hlab ntshav thiab cov hlab plawv zoo ib yam?
Cov kab mob plawv yog qee zaum hu ua ntshav-vascular, lossis tsuas yog cov hlab ntshav, system. Nws muaj lub plawv, uas yog cov khoom siv lub cev, thiab lub kaw lus kaw ntawm cov hlab ntsha hu ua cov hlab ntsha, cov hlab ntsha, thiab cov hlab ntsha.
Puas yog cov hlab ntsha loj dua cov hlab ntsha?
Arterioles nqa ntshav thiab oxygen mus rau hauv cov hlab ntsha me tshaj plaws, cov hlab ntsha. Capillaries yog li ntawd small lawv tsuas pom tau nyob hauv lub tshuab tsom. Cov phab ntsa ntawm capillaries yog permeable rau oxygen thiab carbon dioxide.
