Question

Jane accidentally closed the car door on her finger. The nail on that finger eventually fell off and one year later had not grown back. What nail structure has possibly been permanently damaged?

1) Nail bed
2) Nail matrix
3) Nail plate
4) Nail cuticle

Answer 1

The nail matrix has possibly been permanently damaged.

Step-by-step explanation:

The nail matrix has possibly been permanently damaged. The nail matrix is a layer of proliferating cells from the stratum basale that enables the nail to grow continuously. If this layer has been damaged, it may result in the nail not growing back.