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How are endocrine glands different from exocrine glands?

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The primary difference between endocrine and exocrine glands lies in their structure and the method by which they release their secretions.

Endocrine Glands: These are ductless glands that secrete their products, known as hormones, directly into the bloodstream. Because they lack ducts, they rely on the circulatory system to transport their secretions to target tissues throughout the body. Examples include the pituitary gland, thyroid gland, and adrenal glands.123
Exocrine Glands: These glands possess ducts or tubes through which they secrete their products onto an internal or external body surface. Common examples include sweat glands, salivary glands, and sebaceous glands.14

It is important to note that some organs, such as the pancreas, function as both endocrine and exocrine glands, performing distinct roles in digestion and hormonal regulation simultaneously.2