Qhov Tseem Ceeb Qhov txawv - Elastic vs Cov leeg nqaij
Cov hlab ntsha yog ib hom hlab ntsha uas xa cov ntshav ntawm lub plawv mus rau tag nrho cov ntaub so ntswg hauv peb lub cev. Yog li ntawd, lawv nqa thiab xa cov ntshav uas muaj oxygen rau txhua qhov ntawm lub cev. Cov hlab ntsha yog cov leeg nqaij uas nyob ib puag ncig los ntawm cov ntaub so ntswg du. Phab ntsa ntawm cov hlab ntsha yog tsim los ntawm peb txheej; xws li tunica intima, tunica media thiab tunica externa (adventitia). Lub tunica intima yog txheej txheej sab hauv uas nyob ib puag ncig los ntawm cov ntaub so ntswg du hu ua endothelium. Tunica media yog cov leeg nqaij uas ua haujlwm rau lub siab. Tunica externa yog cov ntaub so ntswg uas txuas cov hlab ntsha mus rau cov ntaub so ntswg nyob ze. Muaj ob hom hlab ntsha uas yog elastic thiab muscular. Cov hlab ntsha elastic yog cov hlab ntsha ua haujlwm hauv lub cev uas muaj ntau dua ntawm elastin thiab collagen fibers hauv tunica media ntawm phab ntsa hlab ntsha thiab lawv yog cov hlab ntsha ze tshaj plaws rau lub plawv. Cov hlab ntsha yog cov hlab ntsha tawg hauv lub cev uas muaj ntau txheej ntawm cov leeg nqaij du hauv tunica media ntawm phab ntsa hlab ntsha thiab lawv nyob ze rau cov ntaub so ntswg tshwj xeeb kom xa ntshav. Raws li, qhov sib txawv tseem ceeb ntawm Elastic thiab Muscular Arteries yog tias cov hlab ntsha elastic muaj cov elastin ntau dua hauv cov xov xwm tunica thaum cov leeg nqaij leeg muaj cov elastin tsawg dua thiab cov leeg nqaij du hauv tunica media.
Elastic Arteries yog dab tsi?
Elastic hlab ntsha yog cov hlab ntsha ua haujlwm hauv lub cev uas muaj cov elastin thiab collagen fibers ntau hauv tunica media ntawm phab ntsa. Lawv ncaj qha txais cov ntshav oxygenated los ntawm lub plawv. Aorta thiab pulmonary artery yog cov piv txwv zoo tshaj plaws ntawm cov hlab ntsha elastic hauv peb lub cev. Aorta yog cov hlab ntsha loj tshaj plaws hauv cov hlab ntsha. Nws ceg mus rau hauv cov hlab ntsha me me hu ua arterioles thiab capillaries. Cov hlab ntsha pulmonary yog qhov tshwj xeeb thiab txawv vim nws nqa cov ntshav oxygen tsawg ntawm lub plawv mus rau lub ntsws.
Raws li lub npe qhia, cov hlab ntsha elastic yog elastic hauv qhov xwm txheej. Cov phab ntsa ntawm cov hlab ntsha no muaj ntau elastin txhawm rau tswj cov ntshav siab uas ncaj qha tawm ntawm lub plawv. Thaum lub plawv dhia, cov ntshav tawm mus rau hauv cov hlab ntsha uas ncab kom haum rau cov ntshav surge.
Daim duab 01: Cov Elastic thiab Muscular Arteries
Cov hlab ntsha hydrostatic siab uas tshwm sim los ntawm lub ventricular contraction yog hu ua systolic siab. Lub phab ntsa elastic recoils thiaj li tswj cov ntshav siab ntawm lub plawv contractions. Thiab nws tseem txav mus rau cov ntshav txawm tias thaum ventricles so. Cov hlab ntsha hydrostatic siab ntawm cov contractions yog hu ua diastolic ntshav siab. Arterial tunica adventitia muaj me me "vasa vasorum" (cov hlab ntsha me uas muab ntshav rau cov hlab ntsha loj). Lub tunica media yog dav uas muaj concentric fenestrated nplooj ntawv ntawm elastin. Thiab nws kuj muaj collagen thiab tsawg dua ntawm cov leeg nqaij fibers. Lub tunica intima yog tsim los ntawm ib txheej ntawm flattened epithelial hlwb ua ke nrog cov txheej txheem ntawm elastin-nplua nuj collagen. Cov txheej no tseem muaj cov cell fibroblasts thiab myointimal hlwb. Nrog kev laus, nws khaws cov lipids thiab thicken. Thiab nws yog ib qho ntawm thawj tus yam ntxwv ntawm atherosclerosis.
Cov leeg nqaij leeg yog dab tsi?
Cov hlab ntsha yog cov hlab ntsha tawg hauv lub cev uas muaj ntau txheej txheej ntawm cov leeg nqaij hauv tunica media ntawm phab ntsa. Cov hlab ntsha cov hlab ntsha faib cov ntshav mus rau ntau qhov ntawm lub cev. Cov no muaj xws li coronary thiab femoral hlab ntsha. Lub tunica media ntawm phab ntsa ntawm cov hlab ntsha no muaj ntau dua ntawm cov leeg nqaij leeg uas ua rau lawv cog lus thiab so (dilating). Nws hloov cov ntshav kom xa raws li lawv xav tau.
Daim duab 02: Tus qauv ntawm phab ntsa Artery
Cov leeg nqaij leeg muaj tsawg dua ntawm elastin hauv lawv cov xov xwm tunica. Lawv muaj ib txheej ntshiab ntawm sab hauv elastic txheej ntawm tunica intima thiab tunica media. Tab sis lawv muaj ob peb zoo txhais sab nraud elastic txheej ntawm tunica media thiab tunica adventitia. Lub tunica intima muaj cov cell uas flattened endothelial. Lub tunica media muaj ib txheej ntawm cov leeg nqaij, qee cov elastin, thiab collagen. Tunica adventitia yog dav dav thiab nws muaj elastin thiab collagen.
Dab tsi zoo sib xws ntawm Elastic thiab Cov leeg nqaij leeg?
- Ob leeg yog hom hlab ntsha.
- Ob leeg muaj cov leeg nqaij tawv, elastin, thiab collagen hauv lawv phab ntsa.
- Ob leeg muaj cov ntshav uas muaj oxygen.
- Ob leeg cov hlab ntsha no tuaj yeem hloov lawv cov qauv raws li qhov xav tau.
Qhov txawv ntawm Elastic thiab Cov leeg nqaij yog dab tsi?
Elastic vs Muscular Arteries |
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| Elastic arteries yog cov hlab ntsha ua haujlwm hauv lub cev uas muaj cov elastin thiab collagen fibers ntau hauv tunica media ntawm phab ntsa hlab ntsha. | Cov hlab ntsha yog cov hlab ntsha tawg hauv lub cev uas muaj ntau cov leeg nqaij hauv tunica media ntawm phab ntsa hlab ntsha. |
| Elastic arteries yog qhov loj tshaj plaws hauv lub cev xws li aorta thiab pulmonary artery. | Cov leeg nqaij leeg me dua piv rau cov hlab ntsha elastic. Cov piv txwv yog coronary artery thiab femoral artery. |
| kev hloov pauv kev tsim qauv | |
| Cov hlab ntsha elastic tuaj yeem ncab thiab rov ua dua hauv kev teb rau qhov siab. | Cov hlab ntsha tuaj yeem ua rau thiab so kom hloov pauv lawv txoj kab. Qhov no tswj cov ntshav raws li qhov xav tau. |
| Muaj nuj nqi | |
| Elastic arteries yog ua cov hlab ntsha. | Cov hlab ntsha yog faib cov hlab ntsha. |
| YNtau Elastin | |
| Elastic hlab ntsha muaj ntau dua ntawm elastin hauv tunica media hauv phab ntsa. | Cov hlab ntsha nqaij muaj tsawg dua ntawm elastin hauv tunica media hauv phab ntsa. |
| Ntau cov nqaij mos Fibres | |
| Elastic arteries muaj tsawg dua ntawm cov leeg nqaij fibers hauv tunica media hauv phab ntsa. | Cov hlab ntsha muaj ntau cov nqaij ntshiv ntawm cov nqaij mos hauv cov tunica media hauv phab ntsa. |
| Kev dav ntawm Tunica Media | |
| Elastic arteries muaj dav tunica media hauv phab ntsa. | Cov hlab ntsha muaj qhov nqaim tunica tawm ntawm phab ntsa piv rau cov hlab ntsha elastic. |
| Kev dav ntawm Tunica Adventitia | |
| Elastic hlab ntsha muaj nqaim tunica adventitia ntawm phab ntsa piv rau cov leeg nqaij. | Cov hlab ntsha muaj qhov dav dav tunica adventitia hauv phab ntsa. |
Summary – Elastic vs Muscular Arteries
Cov hlab ntsha yog cov leeg nqaij uas nyob ib puag ncig ntawm cov ntaub so ntswg. Cov phab ntsa ntawm cov hlab ntsha muaj peb txheej; tunica intima, tunica media, thiab tunica adventitia. Lub tunica intima yog txheej txheej sab hauv uas muaj cov txheej txheem endothelial. Tunica media yog txheej nruab nrab ntawm cov leeg nqaij uas ua rau lub siab ua haujlwm siab ntawm lub plawv. Tunica media muaj elastin, collagen, thiab cov leeg nqaij du. Tunica externa (adventitia) yog cov ntaub so ntswg uas txuas cov hlab ntsha mus rau cov ntaub so ntswg nyob ze. Tunica externa muaj collagen, elastin thiab vasa vasorum. Cov hlab ntsha yog ob hom, nyob ntawm tus qauv thiab kev ua haujlwm. Lawv yog cov hlab ntsha elastic thiab cov leeg leeg. Cov hlab ntsha elastic nyob ze heev rau lub plawv thiab raug kev kub ntxhov thaum lub sij hawm nqus cov ntshav oxygenated los ntawm lub plawv mus rau cov hlab ntsha. Yog li ntawd, lawv muaj ntau cov elastin thiab collagen nyob rau hauv nruab nrab txheej ntawm cov hlab ntsha phab ntsa ua rau cov hlab ntsha kom nthuav los yog tiv taus lub siab. Cov hlab ntsha xa cov ntshav oxygenated rau cov ntaub so ntswg. Tunica media ntawm cov leeg nqaij leeg muaj cov leeg nqaij du thiab qis qis ntawm elastin thiab collagen piv rau cov hlab ntsha elastic. Qhov no yog qhov txawv ntawm elastic thiab cov leeg leeg.
Download the PDF Version of Elastic vs Muscular Arteries
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 Elastic thiab Muscular Arteries
