Question

multiple choice question
the exposed parts of nails and hair are composed of ______ keratinocytes.
o sebaceous
o arrestor pill
o dead
o regenerated

Explanation:

The exposed parts of nails and hair are made up of dead keratinocytes. Keratinocytes produce keratin, and as they move outward from the growth - site, they die and become the hard, protective structures we see. Sebaceous refers to oil - producing glands, arrector pili are muscles related to hair movement, and regenerated is not the correct term for these cells in the exposed parts.

Answer:

C. dead