12 Questions
What is the main function of the outer layer of dead cells produced during keratinization?
to resist abrasion and form a permeability barrier
What is the process by which new keratinocytes are produced in the stratum basale?
mitosis
What type of epithelium makes up the epidermis?
stratified squamous
What is the function of melanocytes in the stratum basale?
to produce and contribute melanin
How do keratinocytes in the epidermis receive nutrients and excrete waste products?
by diffusion
What is the characteristic of the cells in the stratum spinosum?
spine-like appearance
What is the main function of melanin in the skin?
To absorb harmful UV radiation
What is the role of tyrosinase in melanin production?
To convert tyrosine to DOPA
What is the name of the layer of the epidermis where cells die and lose their nuclei and cellular contents?
Stratum Granulosum
What determines the size and distribution of melanosomes?
Genetic factors
What is the function of lipids in the Stratum Corneum?
To prevent water loss from the skin
What is the name of the process by which the most superficial cells of the Stratum Corneum are removed?
Sloughing
Test your knowledge of the epidermis, the outermost layer of the skin, including its composition, cell types, and functions. Learn about keratinocytes, melanocytes, and other cells that make up the epidermis.
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