Final answer:
The sweat gland is not an endocrine gland. Endocrine glands produce hormones and release them into the bloodstream, while sweat glands secrete sweat onto the skin surface.
Step-by-step explanation:
The sweat gland is not an endocrine gland. The endocrine glands are responsible for producing hormones that are released directly into the bloodstream to regulate various bodily functions. The sweat glands, on the other hand, are exocrine glands that secrete sweat onto the surface of the skin to help regulate body temperature.