Question

As a student in an esthetic program, Hannah is tasked with building a three-dimensional model of the layers of the skin. Her model must include captions describing each skin layer and connect skin histology and physiology to esthetics. Hannah visits a craft store to purchase supplies from which she will construct her model.

Hannah adds extra clay of a different color to her model of the cells in the stratum _____, to indicate the granular appearance and production of keratin in the cells of this layer.

a) Basale
b) Spinosum
c) Granulosum
d) Corneum

Answer 1

Hannah should use a different color to represent the stratum granulosum, highlighting its grainy texture due to the keratin-filled keratinocytes.

Step-by-step explanation:

Hannah should add extra clay of a different color to her model of the cells in the stratum granulosum, to indicate the granular appearance and production of keratin in the cells of this layer. The stratum granulosum gives the skin's epidermis its grainy appearance due to keratinocytes in this layer becoming loaded with keratin. The cells in this layer flatten, their membrane thickens, and they also start to die off due to being further from blood vessels in the dermis.