Video: Cov collagen fibers ua dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Collagen yog ib hom protein fiber ntau pom ntau thoob plaws peb lub cev. Nws muab lub zog thiab kev tiv thaiv rau ntau qhov sib txawv ntawm lub cev, suav nrog daim tawv nqaij. Tshwj xeeb tshaj yog, collagen muaj nyob rau hauv peb ntau hom kev sib txuas cov ntaub so ntswg xws li pob txha mos, tendons, pob txha, thiab ligaments.
Kuj paub, dab tsi yog qhov tseem ceeb ntawm collagen?
Collagen yog cov protein ntau tshaj plaws hauv koj lub cev. Nws yog qhov tseem ceeb ntawm cov ntaub so ntswg sib txuas uas ua rau ntau qhov ntawm lub cev, suav nrog cov leeg, cov leeg, tawv nqaij , thiab cov leeg (1). Collagen muaj ntau txoj haujlwm tseem ceeb, suav nrog muab koj li tawv nqaij nrog cov qauv thiab ntxiv dag zog rau koj cov pob txha (1).
Ib yam nkaus, ua cov collagen fibers nthuav tau yooj yim? Muaj cov protein zoo li roj hmab hu ua elastin, uas tso cai rau lawv stretch thiab recoil. Tsis tshua muaj zog, muaj zog tshaj hlau fibers . Elastic fibers tso cai rau collagen fibers rau stretch . cov collagen fibers ua tsis stretch , ywj fibers tau xwb stretch mus ua collagen fibers rub kom nruj.
Yog li ntawd, collagen fibers tuaj qhov twg?
( Collagen cov fibrils yog feem ntau pom muaj nyob hauv cov pob txha mos hyaline thiab cov nucleus pulposus.) Collagen fibers tshwm sim, piv txwv li, thaum cov fibrils muab kauv ncig ib leeg hauv hom I thiab III collagen thiab ob peb lwm hom collagen . Hauv cov leeg thiab ligaments, lub fibers twist ib ncig ib leeg dua thiab tsim cov pob fibrillar.
Dab tsi yog collagen thiab elastin fibers?
Collagen , cov protein, txhawb nqa thiab koj lub cev cov ntaub so ntswg thiab, cia, ua rau koj lub cev tsis txhob poob sib nrug. Collagen yog lub hauv paus tseem ceeb ntawm lub cev cov ntaub so ntswg. Collagen thiab elastin yog fibers uas ua rau cov qauv txhawb nqa ntawm daim tawv nqaij. Collagen muab cov tawv nqaij nws firmness thaum elastin ua kom tawv nqaij nruj.
Pom zoo:
Cov collagen fibers tau npaj li cas?
Collagen fibers tuaj yeem npaj tau meej, xws li hauv cov leeg lossis pob txha (saib daim duab 29.3), lossis tsawg dua, xws li hauv phab ntsa ntawm txoj hnyuv lossis daim tawv nqaij. Lub cornea uas tsim cov pob tshab pem hauv ntej ntawm lub qhov muag kuj zoo tsim rau hauv orthogonal txheej ntawm collagen fibrils. Cov ntaub so ntswg sib txuas kuj tuaj yeem ua ywj
Dab tsi yog qhov txawv ntawm somatic afferent fibers thiab visceral afferent fibers?
Somatic efferent neurons yog lub cev muaj zog neurons uas ua rau muaj kev cuam tshuam los ntawm tus txha caj qaum mus rau cov leeg pob txha. Visceral afferent neurons yog cov neurons hnov qab uas ua rau impulses pib hauv receptors hauv cov leeg nqaij & cov leeg mob
Dab tsi cranial qab haus huv muaj kev hnov cov fibers?
General Visceral Afferent (GVA) Hom fiber ntau no feem ntau pom muaj nyob hauv cov hlab ntsha ntawm lub cev thiab cov ntaub so ntswg uas muaj feem xyuam nrog cov tshuaj. Cov no suav nrog cov fibers pom hauv cov hlab ntsha glossopharyngeal (cranial nerve IX) thiab cov hlab ntsha vagus (paj hlwb cranial X)
Dab tsi ntawm cov ntaub so ntswg sib txuas muaj cov fibers ywj?
Cov ntaub so ntswg tuab
Dab tsi ntawm cov fibers ua rau cov hlab ntsha vagus nqa?
Cov hlab ntsha vagus yog cov hlab ntsha ntev tshaj plaws. Nws muaj lub cev muaj zog thiab kev hnov mob fibers thiab, vim tias nws dhau los ntawm caj dab thiab lub plab mus rau lub plab, muaj qhov dav tshaj plaws hauv lub cev. Nws muaj somatic thiab visceral afferent fibers, nrog rau cov dav thiab tshwj xeeb visceral efferent fibers