What controls the sweat glands?

Answer 1

Your sweat glands are controlled by autonomic nervous system. They get the nervous supply through the sympathetic nerves. But functionally they are parasympathetic nerves, because the acetylcholine is secreted over there at the terminal end.

Answer 2

The autonomic nervous system controls the sweat glands. Specifically, the sympathetic nervous system triggers the release of sweat in response to stimuli such as elevated body temperature or emotional stress. Sweat glands are innervated by sympathetic nerve fibers that release a neurotransmitter called acetylcholine to stimulate sweat secretion.