What are the four main types of exocrine glands?

Exocrine glands release their secretions through ducts onto a surface or into a body cavity. Digestive, mammary, sweat, and sebaceous glands are examples of exocrine glands, so the correct choice is “digestive, mammary, sweat, sebaceous.” Pineal, thyroid, pituitary, and adrenal glands are endocrine glands, which release hormones into the blood.

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