Question

The mammalian epidermis in sequence from exterior to interior is
(i) Stratum corneum
(ii) Stratum lucidum
(iii) Stratum spinosum
(iv) Stratum granulosum

• A. (i), (ii), (iii), (iv)
• B. (iii), (ii), (i), (iv)
• C. (iii), (i), (ii), (iv)
• D. (i), (ii), (iv), (iii)

Answer 1

Answer: (D)

(i), (ii), (iv), (iii)

Stratum corneum - is the most superficial layer of epidermis and consists of 15 - 30 layers of flattened and dead cells with large amounts of keratin.
Stratum spinosum - second layer of epidermis, which is produced by division of stem cells in stratum germinativum.
Stratum granulosum is the third layer, that consists of cells displaced from stratum spinosum.
Stratum lucidum - is the fourth layer, which is found only in thick skin of palms and soles.
Thus, the correct answer is option (D), '(i), (ii), (iv), (iii)'.