nat Tools Add-ons Help s saved in Drive Arial 26. In which layer of the epidermi

Question

nat Tools Add-ons Help s saved in Drive Arial 26. In which layer of the epidermis are epidermal stem cells actively undergoing mitosis? IA] stratum corneum B] stratum granulosum C] stratum germinativum D] stratum spinosum El stratum lucidum 27. Melanocytes A] are located in the stratum corneum [B] produce a brown-black pigment which absorbs ultraviolet radiation [C] are cells in the dermis which produce collagen [D] are much more numerous in individuals with dark skin compared to individuals with light skin 28. Epithelial tissue that covers and lines body surfaces and cavities is avascular, that is, it does not have a blood supply of its own. Cells in the epidermis receive water & nutrients from dermal blood vessels by way of which transport mechanism(s)? A] osmosis [B] diffusiorn [C] active transport D] all of the above [E] none of the above

Explanation / Answer

26. Stratum Spinosum

27. aremuch more numerous in individuals with dark skin compared toindividuals with light skin

28. all of the above

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