Qhov Tseem Ceeb Qhov txawv - Sinusoids vs Capillaries
ntshav ncig ua lub luag haujlwm tseem ceeb hauv kev ciaj sia ntawm cov kab mob nyob. Nws muaj cov khoom sib txawv xws li lub plawv raws li lub twj tso kua mis, cov ntshav raws li cov hlab ntsha nruab nrab nrog cov hlab ntsha, cov hlab ntsha, capillaries thiab lwm yam. Lub circulatory system ua haujlwm hauv kev thauj mus los ntawm cov khoom sib txawv uas yog qhov tseem ceeb rau peb txoj kev ciaj sia. Nws tsuas yog thauj cov pa oxygen thiab cov as-ham kom cov hlwb tuaj yeem nqus tau thiab thauj cov khoom pov tseg los ntawm cov hlwb mus rau hauv lub cev excretory. Capillaries yog cov hlab ntsha me me uas koom nrog kev sib pauv ntawm cov khoom sib txawv. Sinusoids muaj kev ua haujlwm zoo ib yam li cov capillaries. Lawv tsuas yog txawv ntawm cov qauv. Capillaries muaj qhov txuas ntxiv thiab ua tiav basal membrane thaum lub sinusoids tsuas muaj tsis tiav basal membrane. Qhov no yog qhov sib txawv tseem ceeb ntawm capillaries thiab sinusoids.
Dab tsi yog Sinusoids?
A sinusoid yog ib hom hlab ntsha uas zoo ib yam li fenestrated endothelium. Lub basal membrane yog discontinuous, tsis zoo li cov capillaries. Sinusoids tseem hu ua qhib pore capillaries. Lub permeability nce nrog lub xub ntiag ntawm qhib pores. Tsis tas li ntawd, tus naj npawb ntawm cov junctions nruj thiab inter-cellular clefts nce permeability. Qhov permeability no tso cai rau cov protein me me nkag mus thiab tawm ntawm cov hlab ntsha. Lub sinusoid muaj ib tug lumen uas yog hais txog 30 microns thiab muaj nyias phab ntsa. Lub hauv ob sab phlu ntawm sinusoids muaj endothelial hlwb nrog phagocytic hlwb.
Daim duab 01: Sinusoids
Sinusoids feem ntau muaj nyob rau hauv daim siab, spleen thiab pob txha pob txha. Lub siab sinusoid yog lwm hom sinusoidal cov hlab ntsha uas zoo li ib qho sinusoid. Nws kuj muaj ib qho kev txiav tawm epithelium lossis basal membrane. Lub siab sinusoids muab kev ua haujlwm tshwj xeeb rau lub neej. Nws ua raws li qhov chaw rau kev sib xyaw ntawm cov ntshav uas muaj oxygen nplua nuj uas tau muab los ntawm cov hlab ntsha siab thiab cov ntshav uas muaj cov zaub mov nplua nuj los ntawm cov hlab ntsha portal. Qhov no muab txoj hauv kev rau cov as-ham uas tau txais los ntawm txoj hnyuv me mus rau lub siab kom rov qab los ntawm lub cev hlwb.
Dab tsi yog Capillaries?
Ib cov ntshav capillary yog lub cev zoo li lub raj nrog ib phab ntsa tuab (endothelial). Nws yog hais txog 5 mus rau 10 micrometers inch. Capillaries tuaj yeem txhais tau tias yog cov hlab ntsha me tshaj plaws uas thauj cov ntshav los ntawm cov hlab ntsha thiab cov venules. Muaj ntau yam khoom sib pauv nrog cov kua dej interstitial uas nyob ib puag ncig cov hlab ntsha capillary. Cov dej hauv qhov chaw sib ze, oxygen, thiab qabzib yog cov khoom uas tawm hauv cov hlab ntsha thaum dej hauv qhov chaw, carbon dioxide, uric acid, lactic acid, urea, thiab creatinine nkag mus rau hauv cov hlab ntsha.
Cov ntshav uas ntws los ntawm lub plawv los ntawm cov hlab ntsha yog ntws los ntawm cov hlab ntsha uas yog cov ceg nqaim ntawm cov hlab ntsha. Cov hlab ntsha no txuas ntxiv mus rau hauv capillaries. Cov khib nyiab thiab cov as-ham raug pauv ntawm no. Cov venules yog tsim thaum lub capillaries tau nthuav dav thiab koom ua ke. Thaum cov ntaub so ntswg ua haujlwm metabolically, yuav tsum muaj ntau cov capillaries los muab cov as-ham thiab tshem tawm cov khib nyiab. Muaj peb hom capillaries uas yog, nruam, fenestrated thiab discontinuous (sinusoidal).
Daim duab 02: Capillaries
Thaum cov hlab ntsha txuas ntxiv mus qhov twg cov hlwb endothelial tsim ib lub hauv ob sab phlu uas tsis cuam tshuam, nws yog lub npe hu ua capillaries tas li. Cov no tso cai rau cov khoom me me xws li qee cov ions thiab dej txav mus los ntawm cov clefts intercellular. Tab sis, lipid particles uas yog soluble, diffuse los ntawm endothelial hlwb.
Fenestrated capillaries muaj cov pores me me ntawm cov hlwb endothelial uas tso cai rau qee cov proteins thiab cov molecules me me los ntawm. Feem ntau cov ntshav capillaries no muaj nyob rau hauv lub raum glomerulus.
Cov kab mob tsis tu ncua yog nyob rau ntawm endothelium thiab muaj qhov qhib qhov hws loj. Cov no tso cai rau cov qe ntshav liab thiab dawb thiab cov ntshav cov protein kom txav mus los. Discontinuous capillaries feem ntau pom muaj nyob rau hauv cov pob txha thiab cov qog nqaij hlav.
Dab tsi yog qhov zoo sib xws ntawm Sinusoids thiab Capillaries?
Ob leeg koom nrog hauv cov ntshav ncig (piv cov khoom siv) hauv cov hlab ntsha
Qhov txawv ntawm Sinusoids thiab Capillaries yog dab tsi?
Sinusoids vs Capillaries |
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| Sinusoid yog ib hom hlab ntsha uas zoo ib yam li fenestrated endothelium nrog cov basal daim nyias nyias. | Capillary yog hom hlab ntsha me tshaj plaws uas thauj cov ntshav los ntawm cov hlab ntsha thiab cov venules. |
| Basal Membrane | |
| Sinusoid muaj qhov ua tsis tiav basal membrane. | Capillary muaj qhov ua tiav tas mus li basal membrane. |
| Lumen | |
| Larger thiab wider lumen muaj nyob rau hauv sinusoid. | Piv ib me me lumen muaj nyob rau hauv capillary. |
| Cov ntaub so ntswg | |
| Sinusoids muaj nyob rau hauv daim siab, pob txha pob txha, thiab spleen. | Capillaries muaj nyob rau hauv cov leeg, tawv nqaij, ntsws, hauv nruab nrab lub paj hlwb, lub plawv, cov qog ntshav. |
Summary – Sinusoids vs Capillaries
Sinusoids thiab capillaries yog cov qauv hauv kev sib pauv ntawm cov khoom sib txawv. Qhov no suav nrog kev pauv cov pa oxygen thiab cov as-ham los ntawm cov ntshav mus rau cov hlwb thiab cov khoom pov tseg los ntawm cov hlwb mus rau cov ntshav. Sinusoids muaj qhov tsis tiav basal membrane uas zoo li tsis txuas ntxiv. Capillaries muaj tag nrho thiab txuas ntxiv basal membrane. Sinusoids feem ntau muaj nyob rau hauv daim siab thiab tus po thiab kuj nyob rau hauv cov pob txha pob txha. Capillaries muaj nyob rau hauv feem ntau ntawm cov ntaub so ntswg tseem ceeb ntawm lub cev uas suav nrog, lub plawv, cov leeg, lub ntsws thiab lub hauv nruab nrab lub paj hlwb. Qhov no yog qhov txawv ntawm sinusoids thiab capillaries.
Download PDF Version ntawm Sinusoids vs Capillaries
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline lub hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv Ntawm Sinusoids thiab Capillaries
