Keratin yog cov protein ntau hauv cov cellular uas muab cov plaub hau, rau tes, thiab tawv nqaij lawv cov tawv tawv thiab dej-tiv taus. Cov keratinocytes nyob rau hauv lub stratum corneum yog tuag thiab tsis tu ncua slough deb, raug hloov los ntawm cov hlwb los ntawm cov txheej ntxaum. Daim duab 5.5.
Yuav ua li cas cov protein ua kom cov plaub hau thiab tawv nqaij?
Keratinocytes tsim keratin, cov protein uas muab cov tawv nqaij nws lub zog thiab yoog raws thiab ua kom tsis muaj dej ntawm daim tawv nqaij. Melanocytes tsim melanin, cov xim tsaus nti uas muab cov tawv nqaij xim.
Yuav ua li cas protein ua rau koj cov tawv nqaij tsis muaj dej?
- 1 - keratinocytes:
ua rau feem ntau ntawm cov epidermis. Lawv tsim cov protein:keratin uas pab tiv thaiv cov tawv nqaij thiab tiv thaiv daim tawv nqaij thiab cov ntaub so ntswg los ntawm tshav kub, microbes, abrasion thiab tshuaj.
Cov protein twg pab kom cov tawv nqaij tawv thiab tsis muaj dej?
Keratinocytes tsim los ntawm cov qia hlwb ntawm lub hauv paus ntawm epidermis thiab pib tsim thiab khaws cov protein keratin. Keratin ua rau cov keratinocytes tawv heev, scaly thiab dej-resistant. Nyob ntawm kwv yees li 8% ntawm cov hlwb epidermal, melanocytes tsim yog qhov thib ob ntau ntawm cov xovtooj ntawm tes.
Dab tsi ua kom cov plaub hau hloov tau yooj yim thiab tiv thaiv cov tawv nqaij?
YHair follicles nyob rau hauv lub dermis ua plaub hau. Cov nqaij fibers uas txuas nrog cov hauv paus plaub hau tuaj yeem cog lus thiab ua rau cov plaub hau sawv.
Oil glands tso roj uas ua rau cov plaub hau hloov tau yooj yim thiabwaterproofs lub epidermis.
