Is the thyroid an endocrine or an exocrine gland?
The thyroid is an endocrine gland. Endocrine glands produce and secrete hormones directly into the bloodstream (no duct). The hormones will have an effect on cells somewhere else in the body.
Exocrine glands are glands that secrete their products by means of a duct. These products are destined do be excreted from the body.