Textbook Question
The rule of nines is helpful clinically in
a. Diagnosing skin cancer
b. Estimating the extent of a burn
c. Estimating how serious a cancer is
d. Preventing acne
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5. Integumentary System
The Epidermis: Cells
Multiple Choice
In which layer of the epidermis are stem cells located?
A
Stratum basale
B
Stratum granulosum
C
Stratum lucidum
D
Stratum corneum
Verified step by step guidance1
Understand the structure of the epidermis, which is the outermost layer of the skin, composed of multiple sub-layers.
Identify the layers of the epidermis from deepest to most superficial: Stratum basale, Stratum spinosum, Stratum granulosum, Stratum lucidum (only in thick skin), and Stratum corneum.
Recognize that the Stratum basale is the deepest layer of the epidermis and is directly above the dermis.
Learn that the Stratum basale contains stem cells, which are responsible for the continuous regeneration of the epidermis.
Note that the stem cells in the Stratum basale divide to produce new keratinocytes, which migrate upwards through the layers of the epidermis, undergoing differentiation as they move.
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