Answer :
Final answer:
Exocrine secretions are released onto body surfaces through a structure called a duct. These ducts provide a pathway for various substances such as enzymes and sweat. Understanding the role of ducts highlights the difference between exocrine and endocrine secretions.
Explanation:
Understanding Exocrine Secretions
Exocrine secretions refer to the substances released by glands that are discharged onto external or internal body surfaces. These secretions can include sweat, saliva, enzymes, and many others, and are crucial for various body functions.
These secretions are typically delivered through a duct, which is a specific structure designed to transport these materials from the gland to the desired location. In contrast, hormones, which are also secretions, are transported directly into the bloodstream and do not utilize ducts.
Examples of Exocrine Glands
- The salivary glands, which secrete saliva through ducts into the mouth.
- The sweat glands, which deliver sweat through duct systems to the skin surface.
- The pancreas, which releases digestive enzymes into the small intestine via ducts.
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