Answer to Question #211851 in Human Anatomy and Physiology for Yasir

Question

 In a comparative analysis of the structure of the skin of the finger and the scalp, it was noted that the 

skin of the finger has more developed granular,lucida and stratum corneum layers of the epidermis, 

as well as the dermis. Can this be explained by the functional features of the skin of various parts of 

the body and how?

Answer 1

The stratum corneum functions to form a barrier to protect underlying tissue from infection, dehydration, chemicals and mechanical stress.

Keratinocytes in the granular layer also release Odland bodies, lamellar granules, and keratinosomes, which play a role in creating a permeability barrier to water and facilitating cell adhesion in the stratum corneum.