What is the main difference between exocrine and endocrine glands?

Question

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The main difference between exocrine and endocrine glands is that exocrine glands secrete substances into ducts, which then carry the substances to specific locations (such as the skin, digestive tract, or respiratory tract), while endocrine glands secrete substances (hormones) directly into the bloodstream, which carries them throughout the body to their target cells. Examples of exocrine glands include sweat glands, salivary glands, and digestive glands, while examples of endocrine glands include the pituitary gland, thyroid gland, and adrenal gland.

What Is the Main Difference Between Exocrine and Endocrine Glands