Answer:
Exocrine glands, because they release their contents into ducts.
Step-by-step explanation:
Exocrine glands:
Exocrine glands are glands whose secretions pass into a system of ducts that lead ultimately to the exterior of the body. So the inner surface of the glands and the ducts that drain them are topologically continuous with the exterior of the body (the skin).
Gastric glands , salivary glands and sweat glands etc are example of Exocrine glands.