GENERAL HISTOLOGY

INTEGUMENTERY SYSTEM

DERMIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What layer of epidermis does mitotic division occur?
A
stratum lucidum
B
stratum basale
C
stratum granulosum
D
stratum corneum
Explanation: 

Detailed explanation-1: -There are more layers of cells in thicker hairless skin with an additional layer, known as the stratum lucidum. Overall, the process of cell division, desquamation, and shedding go as follows: Cell division occurs in stratum basale/germinativum.

Detailed explanation-2: -The stratum basale or stratum germinativum undergoes constant mitosis to replace the cells exfoliated from the skin’s surface. The new cells push up into the intervening or transitional layers toward the surface.

Detailed explanation-3: -Stratum basale, also known as stratum germinativum, is the deepest layer, separated from the dermis by the basement membrane (basal lamina) and attached to the basement membrane by hemidesmosomes.

Detailed explanation-4: -Mitosis occurs in the deepest layer of the epidermis, which is called the stratum basale. Mitosis is the process of cell division, in which cells replicate their genetic material and then divide into two cells. The epidermis is made up of four to five layers of epithelial tissue.

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