2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
circulatory system …an sab hauv ntawm du endotheliumnpog los ntawm qhov chaw ntawm cov ntaub so ntswg elastic. Lub tunica media, los yog lub tsho nruab nrab, yog tuab hauv cov hlab ntsha, tshwj xeeb tshaj yog nyob rau hauv cov hlab ntsha loj, thiab muaj cov leeg nqaij sib txuas nrog elastic fibers.
endothelium hauv cov hlab ntsha yog dab tsi?
Lub endothelium yogib daim nyias nyias uas kab hauv lub plawv thiab cov hlab ntsha. Cov hlwb endothelial tso tawm cov tshuaj uas tswj cov vascular so thiab contraction nrog rau cov enzymes uas tswj cov ntshav txhaws, tiv thaiv kev ua haujlwm thiab platelet (ib yam khoom tsis muaj xim hauv cov ntshav) adhesion.
Puas yog endothelium folded nyob rau hauv cov hlab ntsha?
Lub tunica intima (Tshiab Latin "lub tsho sab hauv"), lossis intima luv luv, yog tunica sab hauv (txheej) ntawm cov hlab ntsha lossis cov leeg. Nws yog tsim los ntawm ib txheej ntawm endothelial hlwb thiab yog txhawb los ntawm ib tug internal elastic lamina. Cov hlwb endothelial yog nyob rau hauv kev sib cuag nrog cov ntshav ntws.
Cov hlab ntsha puas muaj cov phab ntsa du?
phab ntsa ntawm cov hlab ntsha muaj peb txheej. Cov txheej sab hauv tshaj plaws, tunica intima (tseem hu ua tunica interna), yog qhov yooj yim squamous epithelium ncig los ntawm cov ntaub so ntswg hauv qab daus daim nyias nyias nrog elastic fibers. Cov txheej nruab nrab, cov tunica media, feem ntau yog cov leeg duthiab feem ntau yog txheej tuab tshaj plaws.
Puas yog cov hlab ntsha me me nrog cov endothelium?
Cov kab mob endotheli altsim ib-cell tuab phab ntsa txheej hu ua endothelium uas kab tag nrho peb cov hlab ntsha xws li cov hlab ntsha, arterioles, venules, veins thiab capillaries. … Capillaries nrog ib tug tas mus li endothelium muaj nyob rau hauv lub ntsws, cov leeg nqaij thiab hauv nruab nrab lub paj hlwb.
Pom zoo:
Puas muaj perforation hauv cov hlab ntsha xylem?
Vessel cov ntsiab lus (cov tswvcuab nkoj, ntu ntawm qee tus kws sau ntawv) tuaj yeem txhais tau tias yog xylem hlwb uas ib lossis ntau cov qauv pitlike tsis muaj lub qhov dej ntawm kev loj hlob, yog li tsim perforations. Perforations feem ntau tshwm sim ntawm cov phab ntsa kawg ("
Cov hlab ntsha lymphatic puas muaj li qub?
Feem ntau ntawm cov hlab ntsha lymphatic muaj li qub xws li cov hlab ntshakom cov qog ntshav tuaj yeem txhaws, ntws mus rau ib qho kev taw qhia (mus rau lub plawv). Lymphatic hlab ntsha ntws cov kua dej hu ua lymph los ntawm cov ntaub so ntswg thoob plaws hauv lub cev thiab xa cov kua dej rov qab mus rau hauv cov hlab ntsha los ntawm ob lub ducts.
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 ntsha puas muaj li qub?
Capillaries yog cov hlab ntsha me tshaj plaws hauv lub cev. Cov qauv ntawm capillaries muaj tsuas yog ib txheej ntawm endothelial hlwb. Yog li no, capillaries tsis muaj li qub. Puas capillaries muaj li qub lawm los yog tsis? Capillaries txuas cov hlab ntsha mus rau cov leeg.
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.
