Florida Barber License Practice Test

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What is the term for glands that secrete sebum to the hair and scalp?

Cuticle
Cortex
Medulla
Sebaceous

The correct answer is: Sebaceous

The correct term for glands that secrete sebum to the hair and scalp is "sebaceous." These glands play a crucial role in maintaining the health of the hair and scalp by producing an oily substance known as sebum. Sebum acts as a natural moisturizer, preventing the hair from becoming dry and brittle, while also providing a protective barrier that helps to keep the scalp healthy by preventing the growth of harmful microorganisms. The other terms listed refer to different components of hair structure. The cuticle is the outermost layer of the hair shaft, the cortex is the middle layer that provides strength and color, and the medulla is the innermost layer, which may be absent in some types of hair. Therefore, the focus on the sebaceous glands specifically highlights their functional importance in hair and scalp health, distinguishing them from these structural components.