What area lined with epidermal tissue is where cell mitosis occurs?

The area where cell mitosis occurs, specifically in relation to hair growth, is the hair bulb. The hair bulb is the expanded base of the hair follicle, and it is rich in living cells that are actively dividing. This is where the keratinocytes undergo mitosis and contribute to the growth of the hair shaft above the skin’s surface.

The hair shaft, on the other hand, is composed of dead, keratinized cells that have already completed the mitosis process. The hair follicle itself surrounds the hair strand but doesn’t specifically indicate where cell division occurs. As for the follicular canal, it is simply the passage through which the hair shaft emerges, rather than a site of mitosis.

Thus, the correct answer identifies the specific area where active cell division is happening in the body, which is essential for the continuous growth of hair.