Multiple Choice
Which of the following structures is directly associated with hair in the integumentary system?
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5. Integumentary System
Introduction to the Integumentary System
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Which part of the hair structure is responsible for actively producing new hair cells?
A
Hair shaft
B
Arrector pili muscle
C
Hair matrix
D
Sebaceous gland
Verified step by step guidance1
Understand the structure of the hair: Hair consists of the hair shaft (the visible part above the skin), the hair root (embedded in the skin), and the hair follicle (the structure housing the root).
Learn the function of the hair matrix: The hair matrix is located at the base of the hair follicle, within the bulb. It contains actively dividing cells responsible for producing new hair cells.
Differentiate the roles of other structures: The hair shaft is the non-living, keratinized part of the hair. The arrector pili muscle is responsible for making the hair stand (goosebumps). The sebaceous gland secretes sebum to lubricate the hair and skin.
Focus on the hair matrix: The hair matrix cells divide rapidly, pushing older cells upward. These older cells keratinize and form the hair shaft.
Conclude that the hair matrix is the correct answer because it is the only part of the hair structure actively producing new hair cells.
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