Question

which part of the hair makes new keratinocytes that make up the hair? a.) hair papilla b.) hair bulb c.) hair matrix d.) hair shaft

Explanation:

• Hair Papilla: Supplies nutrients to the hair bulb but doesn't produce keratinocytes.
• Hair Bulb: Houses the hair matrix.
• Hair Matrix: Composed of rapidly dividing cells that generate new keratinocytes (the main cells of hair).
• Hair Shaft: The visible part of the hair, made of dead keratinized cells, not a site of new keratinocyte production.

Answer:

C. Hair Matrix