Final answer:
Exocrine glands such as the salivary glands, sweat glands, mammary glands, and the pancreas release their secretions through ducts to the exterior or into the gastrointestinal tract.
Step-by-step explanation:
Some locations of exocrine glands in the human body include A) Salivary glands, sweat glands, and mammary glands. These glands release their secretions through ducts that lead to the epithelial surface. For instance, the salivary glands release saliva into the mouth, sweat glands produce sweat that is carried to the surface of the skin, and mammary glands secrete breast milk. The pancreas is another example of an exocrine gland as it produces digestive enzymes that are carried through ducts into the small intestine.