Question

describe the structure and growth of nails by correctly completing the following sentences: 1. nails grow from special epithelial cells at the ____ of the nail in the region called the nail __. 2. the specialized epithelial cells become __ as they grow out over the nail __. 3. the visible portion of the nail is called the nail __. 4. the __ is a fold of skin that hides the nail root. 5. ordinarily, nails grow only about 1 ____ per week.

Explanation:

Nails grow from epithelial cells at the root in the base region. These cells keratinize as they grow over the bed. The visible part is the body, and the cuticle hides the root. Nails grow about 1 millimeter per week.

Answer:

1. root, base
2. keratinized, bed
3. body
4. cuticle
5. millimeter