Video: Dab tsi tshwm sim hauv txheej txheej papillary?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov papillary txheej yog a txheej ntawm lub dermis, ncaj qha hauv qab lub epidermis. Qhov no txheej muaj (qhov xaus ntawm) capillaries, lymph hlab ntsha thiab sensory neurons. Cov capillaries muab cov as-ham rau ntawm daim tawv nqaij. Tsis tas li ntawd, cov hlab ntsha tuaj yeem cog lus thiab so kom txo qis lossis ua kom cov ntshav ntws mus rau ntawm daim tawv nqaij.
Ib yam li ntawd, nws tau nug, qhov ua haujlwm ntawm txheej txheej papillary yog dab tsi?
Lub sab sauv, papillary txheej, muaj ib tug nyias txheej ntawm collagen fibers. Cov khoom siv papillary txheej cov as -ham xaiv cov khaubncaws sab nraud povtseg ntawm epidermis thiab tswj qhov kub thiab txias. Ob qho ntawm cov haujlwm no tau ua tiav nrog lub nyias nyias, cov kab mob vascular uas ua haujlwm zoo ib yam li lwm cov hlab ntsha hauv lub cev.
Tsis tas li, dab tsi yog 2 txheej ntawm daim tawv nqaij? Lub dermis muaj ob txheej:
- Lub papillary txheej yog ib txheej nyias txheej ntawm cov ntaub so ntswg isolar connective nrog ntiv tes zoo li qhov projections hu ua dermal papillae uas protrude mus rau hauv lub epidermis.
- Cov txheej txheem reticular yog ib txheej tuab ntawm cov ntaub so ntswg tsis sib xws.
Ib yam li ntawd, nws tau nug, qhov txawv ntawm papillary txheej thiab txheej reticular yog dab tsi?
papillary txheej yog vascularized heev cov ntaub so ntswg uas muaj cov ntaub so ntswg ntawm collagen thiab elastin fibers; thiab cov txheej reticular , suav txog 80% ntawm cov tuab ntawm daim tawv nqaij, yog tuab tuab cov ntaub so ntswg sib txuas. 8.
4 txheej ntawm daim tawv nqaij yog dab tsi?
Daim tawv nqaij uas muaj plaub txheej ntawm cov hlwb raug xa mus rau "nyias tawv nqaij . " Los ntawm qhov tob mus rau sab nraud, cov no txheej Cov stratum basale, stratum spinosum, stratum granulosum, thiab stratum corneum. Feem ntau ntawm cov tawv nqaij tuaj yeem muab cais ua nyias nyias tawv nqaij . “Thick tawv nqaij ” tsuas yog pom ntawm ob txhais tes thiab ob txhais taw xwb.
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