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a tubular passage in the body through which liquid, such as tears or bile, can pass
What is a "duct"?
A duct is a tubular structure that transports various substances within the body. Ducts can be found in different organs and systems, such as the respiratory system, digestive system, and excretory system. They serve as pathways for the movement of fluids, gases, and secretions, including saliva, tears, sweat, bile, and digestive enzymes. Ducts can vary in size and complexity, ranging from small, intricate ducts within glands to larger ducts that connect organs. These structures play a vital role in maintaining the proper functioning and regulation of bodily processes, ensuring the transport and distribution of necessary substances for physiological functions.
a hollow conduit or passage that is used for the distribution, circulation, or ventilation of air, gases, or other substances within a building or system
a continuous tube formed by a row of elongated cells lacking intervening end walls
