Question

What layer of skin contains the stem cells that cause fingernail growth

Answer 1

nail matrix

Step-by-step explanation:

it is found at the proximal end, and it contains stem cells, which form keratinocytes( which make up the nail)

Answer 2

A nail grows from a deep layer of living epidermal tissues, called the nail matrix, at the proximal end of the nail. Stem cells in the nail matrix keep dividing to allow nail growth, forming first the nail root and then the nail plate as the nail continues to grow longer and emerges from the epidermis

Hope this helps