Video: Qhov twg ntawm cov txheej txheej txheej hauv qab no ua haujlwm hauv kev faib cell?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
19 Daim npav hauv Cov Teeb no
| Txheej ntawm daim tawv nqaij qhov twg muaj kev faib cell sai tshaj plaws. | Stratum basale |
|---|---|
| Epidermal txheej uas muaj cov qia hlwb | Stratum basale |
| Dermal txheej nrog cov hauv paus plaub hau thiab qog | Superficial dermis |
| Tiv thaiv tawv nqaij tiv thaiv kab mob | Langerhans hlwb |
| Ua keratin. | Keratinocytes |
Ua kom pom qhov no, txheej txheej txheej txheej puas ua haujlwm hauv kev faib cell?
Stratum basale
Ib qho ntxiv, cov xov tooj ntawm tes nyob hauv daim tawv nqaij tuaj yeem faib los ntawm mitosis? Cov stratum hauv qab ( stratum germinativum ) muaj ib txheej txheej ntawm cov cell columnar nquag faib los ntawm mitosis los tsim cov cell uas txav mus rau txheej txheej txheej sab sauv thiab thaum kawg mus rau saum npoo ntawm tawv nqaij.
Nyob rau hauv dab tsi epidermal txheej yog tyrosinase ua hauj lwm?
3. Ib qho ua rau tib neeg albinism yog qhov tsis xws luag hauv cov protein tyrosinase, ib qho enzyme uas pab tswj kev tsim cov melanin. Hauv txheej txheej txheej txheej twg yog tyrosinase ua haujlwm? (Tyrosinase yog ib qho enzyme uas tsim melanin ntawm melanocytes pom ntawm cov hlwb ntawm stratum hauv qab .)
Hypodermis yog dab tsi?
Hauv arthropods, cov hypodermis ntawm lub ntsej muag yog txheej txheej ntawm cov cell uas zais cov chitinous cuticle. Cov hypodermis ntawm lub ntsej muag yog hauv qab dermis uas nyob hauv qab daim tawv nqaij. Nws yog siv feem ntau rau kev khaws cov rog. Ib txheej ntawm cov ntaub so ntswg nyob tam sim ntawd hauv qab dermis ntawm daim tawv nqaij vertebrate.
Pom zoo:
Vim li cas qhov taub ntawm cov hauv paus dos yog qhov zoo ntawm kev faib cov cell?
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