NEET PG DENTAL EXAM

HISTOLOGY

INTEGUMENTARY SYSTEM SKIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are the layers of the Epidermis
A
Stratum Lucidus, Stratum Corneam, Stratum Cornell, Stratum Spag, Stratum Basale
B
Stratum Corneum, Stratum Lucidum, Stratum Granulosum, Stratum Spinosum, Stratum Basale
C
Stratum Lucidum, Stratum Corneum, Stratum Bacterium, Stratum Spinosaurus, Stratum Basale
D
Stratum Lucidum, Stratum Cornea, Stratum Corneum, Stratum Spinosum, Stratum Basale
Explanation: 

Detailed explanation-1: -The layers of the epidermis include the stratum basale (the deepest portion of the epidermis), stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum (the most superficial portion of the epidermis).

Detailed explanation-2: -The human stratum corneum comprises 15 or so layers of flattened corneocytes and is divided into two layers: the stratum compactum and the stratum disjunctum. The stratum compactum is the deep, dense, cohesive layer, while the stratum disjunctum is looser and lies superficially to the stratum compactum.

Detailed explanation-3: -The stratum basale is a single row of columnar or cuboidal cells resting on the basement membrane zone that separates the epidermis from the dermis (see Fig. 1-5). Most of these cells are keratinocytes that are constantly reproducing and pushing upward to replenish the epidermal cells above.

Detailed explanation-4: -The stratum spinosum (or spinous layer/prickle cell layer) is a layer of the epidermis found between the stratum granulosum and stratum basale. This layer is composed of polyhedral keratinocytes. These are joined with desmosomes.

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