Qhov sib txawv tseem ceeb ntawm papillary thiab reticular txheej yog cov papillary txheej yog txheej nyias nyias ntawm cov dermis uas muaj cov ntaub so ntswg xoob thaum cov txheej reticular yog cov txheej tuab tuab ntawm cov dermis uas muaj cov ntaub so ntswg tuab.
Lub dermis yog txheej tuab tshaj plaws ntawm daim tawv nqaij, thiab cov qauv fibrous muaj li ntawm collagen, elastic cov ntaub so ntswg, thiab lwm yam extracellular Cheebtsam xws li vasculature, paj hlwb, cov hauv paus plaub hau, thiab qog. Nws yog nyob rau hauv lub epidermis thiab saum toj no subcutaneous txheej. Lub dermis muab lub zog thiab yoog raws rau peb cov tawv nqaij. Sib nrug los ntawm kev txhawb nqa thiab kev tiv thaiv ntawm daim tawv nqaij, nws kuj pab hauv thermoregulation, thiab pab kom hnov qab. Tsis tas li ntawd, lub dermis muaj ob txheej ua papillary txheej thiab txheej reticular. Ntawm ob txheej no, txheej papillary yog txheej sab sauv lossis txheej sab saum toj thaum txheej txheej reticular yog qis lossis tob txheej ntawm dermis.
Papillary Layer yog dab tsi?
Cov papillary txheej yog txheej sab saum toj ntawm lub dermis. Nws yog qhov nyias nyias thiab tsim los ntawm cov ntaub so ntswg xoob. Nws nyob hauv qab lub epidermis, txuas rau nws. Nws muaj cov txheej txheem elastic fibers thiab nyias collagen fibers. Txawm li cas los xij, papillary txheej ntawm dermis yog nplua nuj nyob rau hauv cov hlab ntsha; yog li ntawd nws yog vascularized heev piv rau cov txheej ntxaum.
Daim duab 01: Dermis
Ntxiv mus, txheej papillary muaj ntau lub hlwb, suav nrog ntau cov macrophages, mast cells thiab lwm cov hlwb inflammatory. Papillary txheej tsub kom cov neeg kho tshuab adhesion thiab ua kom yooj yim diffusion ntawm cov as-ham los ntawm dermis mus rau epidermis.
Dab tsi yog Reticular Layer?
Cov txheej txheem reticular yog txheej tob ntawm cov dermis. Nws yog ib txheej tuab uas ua rau feem ntau ntawm cov dermis. Nws yog tsim los ntawm cov ntaub so ntswg tuab. Muaj coarse collagen fibers teem irregularly thiab ib tug me me ntawm elastic fibers. Muab piv rau cov txheej sab saum toj, cov txheej reticular muaj tsawg dua cov hlwb, suav nrog adipocytes, melanocytes thiab mast hlwb. Nws kuj tseem tsawg dua vascularized, muaj cov hlab ntsha tsawg thiab me me.
Daim duab 02: Papillary thiab Reticular Layer
Tsis tas li ntawd, txheej reticular kuj muaj cov hauv paus plaub hau, qog hws, thiab qog sebaceous. Lub luag haujlwm tseem ceeb ntawm txheej reticular yog ntxiv dag zog rau daim tawv nqaij thiab muab elasticity rau peb cov tawv nqaij.
Dab tsi zoo sib xws ntawm Papillary thiab Reticular Layer?
- papillary thiab reticular txheej yog ob txheej ntawm lub dermis.
- Lawv yog cov ntaub so ntswg sib txuas.
- YLawv muaj collagen thiab elastic fibers.
- Ntxiv mus, lawv muaj cov hlab ntsha.
Qhov txawv ntawm Papillary thiab Reticular Layer yog dab tsi?
Cov papillary txheej yog txheej sab saum toj ntawm lub dermis thaum lub reticular txheej yog qhov tob tshaj plaws ntawm lub dermis. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm papillary thiab reticular txheej. Lub papillary txheej yog tsim los ntawm cov xoob connective txheej thaum lub reticular txheej yog tsim los ntawm tuab connective ntaub so ntswg. Tsis tas li ntawd, muaj ntau lub hlwb hauv papillary txheej piv rau cov txheej reticular. Tsis tas li ntawd, txheej papillary yog nyias piv rau txheej reticular.
Ntxiv mus, cov txheej txheem papillary muaj xws li cov khoom noj khoom haus thiab kev tswj xyuas kub ntawm peb cov tawv nqaij. Lub caij no, cov txheej txheem reticular ntxiv dag zog rau daim tawv nqaij thiab muab peb cov tawv nqaij elasticity. Yog li, qhov no yog qhov sib txawv ntawm papillary thiab reticular txheej.
Summary – Papillary vs Reticular Layer
Lub dermis yog txheej txheej ntawm peb cov tawv nqaij nyob nruab nrab ntawm cov epidermis thiab subcutaneous txheej. Nws muaj ob txheej: papillary txheej (superficial txheej) thiab reticular txheej (ntev tob). Cov papillary txheej yog nyias piv rau cov txheej reticular, uas yog tuab thiab ua rau feem ntau ntawm cov dermis. Tsis tas li ntawd, lub papillary txheej yog txuas mus rau lub epidermis. Nws yog tsim los ntawm xoob connective cov ntaub so ntswg ntawm elastic fibers thiab zoo collagen fibers. Meanwhile, txheej reticular nyob hauv qab papillary txheej. Nws yog tsim los ntawm cov ntaub so ntswg ntom ntom ntawm coarse collagen fibers teem irregularly thiab ib tug me me ntawm elastic fibers. Tsis tas li ntawd, papillary txheej yog nplua nuj nyob rau hauv cov hlab ntsha, tsis zoo li lub reticular txheej. Qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm papillary thiab reticular txheej.
