Video: Dab tsi txuas cov hlab ntsha mus rau capillaries?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Capillaries txuas cov cov hlab ntsha rau cov leeg. Cov cov hlab ntsha xa cov ntshav uas muaj cov pa oxygen mus rau cov hlab ntsha , qhov twg qhov sib pauv tiag tiag ntawm cov pa thiab carbon dioxide tshwm sim. Cov cov hlab ntsha tom qab ntawd xa cov ntshav uas nplua nuj mus rau cov hlab ntsha kom thauj rov qab mus rau lub ntsws thiab lub plawv. Cov hlab ntsha nqa cov ntshav rov qab mus rau lub plawv.
Ib yam li ntawd, koj tuaj yeem nug, cov hlab ntsha thiab cov hlab ntsha yog dab tsi?
Cov hlab ntsha nqa ntshav tawm ntawm lub plawv; lub ntsiab cov leeg yog aorta. Capillaries nqa cov ntshav tawm ntawm lub cev thiab pauv cov khoom noj khoom haus, pov tseg, thiab oxygen nrog cov ntaub so ntswg ntawm qib cellular. Cov leeg yog cov hlab ntsha uas coj cov ntshav rov qab mus rau lub plawv thiab tso ntshav los ntawm lub cev thiab cov ceg.
Qhov thib ob, qhov twg pom cov hlab ntsha sinusoidal? Sinusoidal capillaries feem ntau yog pom nyob rau hauv daim siab, nruab nrab ntawm cov hlwb epithelial thiab hepatocytes. Lawv kuj tuaj yeem ua tau pom hauv cov sinusoids ntawm tus po uas lawv koom nrog hauv kev lim ntshav kom tshem cov antigens, cov qe ntshav liab tsis zoo, thiab cov kab mob me me.
Tsis tas li ntawd, vim li cas cov hlab ntsha ua capillaries?
Capillaries , qhov tsawg tshaj plaws thiab feem ntau ntawm cov hlab ntsha, daim ntawv kev sib txuas ntawm cov hlab ntsha uas nqa ntshav tawm ntawm lub plawv ( cov hlab ntsha ) thiab cov hlab ntsha uas rov qab mus rau lub plawv (veins). Lub luag haujlwm tseem ceeb ntawm cov hlab ntsha yog kev pauv cov ntaub ntawv ntawm cov ntshav thiab cov ntaub so ntswg.
Cov hlab ntsha thiab cov hlab ntsha ua haujlwm li cas?
Cov cov hlab ntsha nqa ntshav tawm ntawm lub plawv; cov leeg nqa nws rov mus rau lub plawv. Cov ntshav mus los ntawm lub ntsiab cov leeg kom loj dua thiab me dua cov hlab ntsha thiab nyob rau hauv lub capillary network. Nyob ntawd cov ntshav tso tawm cov pa oxygen, cov as-ham thiab lwm yam tseem ceeb thiab khaws cov pa roj carbon dioxide thiab cov khoom pov tseg.
Pom zoo:
Cov hlab ntsha qis hauv cov hlab ntsha ntws mus rau qhov twg?
Brachiocephalic leeg
Dab tsi yog qhov txawv ntawm cov hlab ntsha thiab cov hlab ntsha capillaries?
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Dab tsi yog cov hlab ntsha thiab cov hlab ntsha capillaries?
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