Cov txheej txheem:
Video: Dab tsi yog 3 hom paj hlwb pom hauv daim tawv nqaij?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Sau npe peb hom paj fibers pom nyob rau hauv daim tawv nqaij . Tsav cov paj hlwb , hnov cov paj hlwb thiab secretory cov paj hlwb.
Hais txog qhov no, dab tsi yog 3 lub paj hlwb pom hauv daim tawv nqaij?
Hnov paj hlwb sawv cev rau feem ntau ntawm cov cutaneous paj hlwb thiab innervate lub peb txheej ntawm cov tawv nqaij , epidermis, dermis thiab hypodermis. Lub sensory fibers tuaj yeem muab faib ua pawg los ntawm kev tshaj tawm mus rau hauv peb Ntau pawg: myelinated Aβ thiab Ad, thiab unmyelinated C subtypes.
Tom qab ntawd, lo lus nug yog, puas muaj cov leeg nqaij nyob hauv daim tawv nqaij? Cov tawv nqaij Nws muaj ob txheej: Epidermis, txheej epithelial thiab Dermis, qhov sib txuas cov ntaub so ntswg txheej Tab sis epidermis kuj muaj qee yam paj hlwb (dawb paj hlwb xaus). Tawv nqaij yog qhov dav tshaj plaws receptors ntawm lub cev, thiab ob txheej txheej ntawm nws muaj paj hlwb.
Yog li ntawd, peb qhov kev faib loj ntawm tib neeg daim tawv nqaij yog dab tsi?
Cov ntsiab lus hauv txheej no (17)
- epidermis. txheej txheej ntawm daim tawv nqaij, yog tsim los ntawm cov ntaub so ntswg epithelial.
- dermis.
- hypodermis ntawm lub ntsej muag.
- subcutaneous txheej.
- Keratinocytes.
- Melanocytes.
- Langerhans hlwb.
- Merkel hlwb.
Muaj pes tsawg leeg nyob hauv daim tawv nqaij?
Qhov nruab nrab square inch (6.5 cm²) ntawm tawv nqaij tuav 650 hws qog, 20 cov hlab ntsha, 60,000 melanocytes, thiab ntau dua 1,000 paj hlwb qhov kawg. Tus neeg nruab nrab tawv nqaij cell yog hais txog 30 micrometers inch, tab sis muaj ntau yam.
Pom zoo:
Dab tsi yog txheej txheej sab saum toj ntawm daim tawv nqaij nyob ib sab ntawm daim tawv nqaij?
Lub dermis txuas cov epidermis mus rau hypodermis, thiab muab lub zog thiab kev ywj pheej vim muaj cov collagen thiab elastin fibers. Nws tsuas muaj ob txheej: txheej txheej papillary nrog papillae uas nthuav mus rau hauv daim tawv nqaij thiab qis dua, txheej txheej reticular uas muaj cov ntaub so ntswg sib txuas xoob
Dab tsi yog qhov sib txawv tseem ceeb ntawm lub hauv paus paj hlwb thiab lub paj hlwb sab hauv?
1 Teb. Al E. Lub hauv paus paj hlwb muaj lub hlwb thiab tus txha caj qaum. Lub paj hlwb peripheral muaj (feem ntau ntawm) cov hlab ntsha cranial, tshwj tsis yog rau CNII, thiab cov hlab ntsha efferent thiab afferent spinal
Dab tsi yog qhov txawv ntawm daim tawv nqaij thiab daim tawv nqaij daim ntawv xeem?
Qauv: Sib sib zog nqus ntawm daim tawv nqaij; connective ntaub so ntswg muaj li ntawm ob txheej. Muaj nuj nqi: Muaj lub luag haujlwm rau cov txheej txheem muaj zog thiab yoog raws ntawm daim tawv nqaij; lub epidermis pauv cov pa roj, cov khoom noj, thiab cov khoom pov tseg nrog cov hlab ntsha hauv lub dermis
Puas yog lo lus dav dav txhais tau tias yog mob ntawm daim tawv nqaij lossis pob khaus uas tuaj yeem muaj ntau yam ua rau nws yog ib qho cim ntawm ntau hom tawv nqaij tsis xws luag?
Dermatitis yog lo lus dav dav uas piav txog kev ua rau tawv nqaij. Dermatitis yog ib yam mob uas muaj ntau yam ua rau thiab tshwm sim ntau yam. Nws feem ntau yog khaus, tawv nqaij qhuav los yog pob khaus ntawm daim tawv nqaij o, reddened
Hom ntaub so ntswg twg ua rau daim tawv nqaij ntawm daim tawv nqaij?
Lub epidermis yog tsim los ntawm stratified squamous epithelium. Lub dermis muaj cov ntaub so ntswg sib txuas, cov leeg nqaij du, thiab cov paj hlwb