Question

each of the following is a function of the integumentary system except
detection of sensations.
excretion of salts and wastes.
synthesis of vitamin c.
protection of underlying tissue.
maintenance of body temperature.

Explanation:

The integumentary system (skin, hair, nails etc.) can detect sensations, excrete salts and wastes, protect underlying tissue, and maintain body temperature. However, the human body cannot synthesize vitamin C, and the integumentary system is not involved in vitamin C synthesis.

Answer:

synthesis of vitamin C.