Where is the arrector pili muscle located?

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Multiple Choice

Where is the arrector pili muscle located?

Explanation:
The arrector pili is a tiny smooth muscle that sits in the dermis and attaches to the hair follicle right at the base where the hair emerges from the skin. When it contracts, it pulls the follicle upright, making the hair stand on end and causing goosebumps. This places it at the base of the follicle, not inside the hair shaft, not within the sebaceous gland, and not in the dermal papilla.

The arrector pili is a tiny smooth muscle that sits in the dermis and attaches to the hair follicle right at the base where the hair emerges from the skin. When it contracts, it pulls the follicle upright, making the hair stand on end and causing goosebumps. This places it at the base of the follicle, not inside the hair shaft, not within the sebaceous gland, and not in the dermal papilla.

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