* Exocrine glands: These glands secrete their products into ducts that carry the secretions to a specific location outside the gland. Examples include sweat glands, salivary glands, and mammary glands.
* Endocrine glands: These glands secrete their products directly into the bloodstream, where they are transported to target cells throughout the body. Examples include the thyroid gland, pituitary gland, and adrenal glands.
