What term describes a chemical signal made in sweat glands

The correct answer is a pheromone.

The small tube-like compositions of the skin that generate sweat, that is, a fluid, which is produced by the body to sustain thermoregulating balance are known as sweat glands. There are two prime kinds of sweat glands: apocrine sweat glands and eccrine sweat glands.

Pheromone is the term that illustrates a chemical signal produced in the sweat glands. The sweat glands usually discharge salts, water, and urea. It also comprises marginal concentrations of 4-methylphenol and 2-methylphenol that are accountable for the majority of the unpleasant smell.

Eccrine sweat glands are innervated by (receive nerve signals from) the sympathetic nervous system via a chemical called acetylcholine, which is a neurotransmitter (a substance that transmits nerve signals from the brain)