Question

which structure is highlighted?
sudoriferous gland
arrector pili muscle
hair root
hair bulb

Explanation:

The arrector pili muscle is a small muscle attached to hair follicles. When it contracts, it causes the hair to stand up. Sudoriferous glands are sweat - producing glands. The hair root is the part of the hair within the follicle, and the hair bulb is the enlarged base of the hair root. Based on the general knowledge of skin and hair - related structures and lacking the actual highlight in the image, but considering the options, we need to identify the correct structure.

Answer:

Without seeing the highlighted part, we can't give a definite answer. But if we were to explain the options:

• Sudoriferous gland: Gland that produces sweat.
• Arrector pili muscle: Muscle that causes hair to stand up.
• Hair root: Part of hair inside follicle.
• Hair bulb: Enlarged base of hair root.