Hair Structure and Function Concepts

What are the three main sections of hair?

• Hair follicle, hair bulb, hair shaft

• Hair bulb, hair root, hair shaft

• Epidermal skin, dermal skin layer, hair shaft

• Medulla, cortex, cuticle

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What happens to hair cells during keratinization as they mature?

• They divide rapidly and become melanocytes.

• They fill with keratin protein, lose organelles, and die.

• They extend deeper into the dermal layer.

• They produce melanin to give hair its color.

Which cells are responsible for determining hair color?

• Epithelial cells

• Keratinized cells

• Melanocyte cells

• Germinal matrix cells

What is the primary function of sebum, secreted by the sebaceous gland?

• To produce hair color.

• To cause goosebumps.

• To lubricate and condition hair and skin.

• To stimulate hair growth.