Question

The second layer of epidermis in rat integument is

• A. Stratum lucidum
• B. Stratum germinations
• C. Stratum corneum
• D. Stratum granulosum
• E. Dermis

Answer 1

The correct option is A Stratum lucidum

The skin is the largest organ of the body and has two main layers as epidermis (outer layer) and dermis (inner layer). The epidermis has several layers or strata. The deepest stratum is stratum basale, which is a single layer of cuboidal or columnar cells. Above, it is the stratum spinosum, which has a total of 8 - 10 layers of many-sided cells. Then, above it is the stratum granulosum, which is two to five layers of flattened diamond shaped cells. Then the second layer is the stratum lucidum, which is three to five layers of dead cells and appears transparent. It is present in thick skin and absent in most thin skin. Its function is to disperse keratohyalin around keratin fibers. Stratum corneum is the most superficial stratum of epidermis.
Thus, the correct answer is (A) Stratum lucidum.