Question

question 7
psoriasis is a skin condition where theres an excessive shedding of epidermis. under normal conditions, the journey of an epidermal cell from the beginning to end takes about a month. however, in psoriasis, the journey takes between 3 and 5 days. what cell type is being excessively shed?
answer
merkel cells
melanocytes
keratinocytes
basal cells
i dont know yet

Explanation:

In psoriasis, the excessive shedding in the epidermis involves keratinocytes. Keratinocytes are the most abundant cells in the epidermis and are responsible for the production of keratin. They are the cells that are shed in large - numbers in psoriasis. Merkel cells are involved in touch sensation, melanocytes produce melanin, and basal cells are stem - like cells in the epidermis that give rise to keratinocytes but are not the cells that are shed in large numbers in psoriasis.

Answer:

Keratinocytes