Question

A splinter that penetrates to the third layer of epidermis of the palm is lodged in which layer? (Module 5.2D)

a) stratum corneum
b) stratum granulosum
c) stratum basale
d) stratum lucidum
e) stratum spinosum

Answer 1

A splinter that penetrates to the third layer of the epidermis of the palm is lodged in the stratum granulosum, the third layer counting from the outermost layer. Option a.

Step-by-step explanation:

The epidermis of the palm is composed of five distinct layers: the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and the stratum basale. A splinter that penetrates to the third layer would be lodged in the stratum granulosum, as this is the third layer when counting from the outermost layer inward.

For reference, if an individual is to bleed from a cut, it means the cut has penetrated past the epidermis and into the vascularized dermal layers beneath, specifically the papillary dermis.

The stratum basale is the innermost epidermal layer which attaches the epidermis to the basement membrane, below which lies the dermis, containing blood vessels and where bleeding would occur with deeper cuts. Option a.