NEET PG DENTAL EXAM

HISTOLOGY

INTEGUMENTARY SYSTEM SKIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The clear layer only present in certain areas of the body is called:
A
Stratum granulosum
B
Stratum spinosum
C
Stratum corneum
D
Stratum lucidum
Explanation: 

Detailed explanation-1: -Stratum lucidum, 2-3 cell layers, present in thicker skin found in the palms and soles, is a thin clear layer consisting of eleidin which is a transformation product of keratohyalin.

Detailed explanation-2: -The stratum lucidum is a thin, transparent layer of keratinocytes that are becoming less round and have a flatter shape. The top layer of the epidermis. This is the layer of the epidermis that you see.

Detailed explanation-3: -The keratinocytes that compose the stratum lucidum are dead and flattened (see Figure 5.1. 4). These cells are densely packed with eleiden, a clear protein rich in lipids, derived from keratohyalin, which gives these cells their transparent (i.e., lucid) appearance and provides a barrier to water.

Detailed explanation-4: -Only thick skin contains the stratum lucidum layer. The stratum lucidum is a thin, transparent layer consisting of two to three layers of cells. It contains a protein called eleidin.

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