Question

strata granulosum is abundant with which cell?
○ keratinocytes
○ melanocytes
○ dendrocytes
question 12 1.75 pts
which of the following correctly identifies the layers of the epidermis from the outermost layer to the innermost layer?
○ stratum corneum, stratum granulosum, stratum spinosum, stratum basale
○ stratum granulosum, stratum spinosum, stratum basale, stratum corneum
○ stratum basale, stratum spinosum, stratum granulosum, stratum corneum
○ stratum spinosum, stratum basale, stratum corneum, stratum granulosum

Explanation:

For the first question, the stratum granulosum is rich in keratinocytes. Melanocytes are mainly in the stratum basale and are responsible for skin - color. Dendrocytes are antigen - presenting cells in the skin but not abundant in the stratum granulosum. For the second question, the correct order of epidermal layers from outermost to innermost is stratum corneum, stratum granulosum, stratum spinosum, stratum basale. The stratum corneum is the most superficial layer made of dead, keratinized cells, followed by the stratum granulosum with cells containing keratohyalin granules, then the stratum spinosum with desmosomes giving a spiny appearance, and finally the stratum basale which is the mitotically active layer.

Answer:

Question 1: Keratinocytes
Question 2: Stratum corneum, stratum granulosum, stratum spinosum, stratum basale