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duct |
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duct 1. any bodily passage, esp one conveying secretions or excretions 2. a narrow tubular cavity in plants, often containing resin or some other substance 3. a channel or pipe carrying electric cable or wires duct [dəkt] (anatomy) An enclosed tubular channel for conducting a glandular secretion or other body fluid. (communications) An enclosed runway for cables. (geophysics) The space between two air layers, or between an air layer and the earth's surface, in which microwave beams are trapped in ducting. Also known as radio duct; tropospheric duct. (mechanical engineering) A fluid flow passage which may range from a few inches in diameter to many feet in rectangular cross section, usually constructed of galvanized steel, aluminum, or copper, through which air flows in a ventilation system or to a compressor, supercharger, or other equipment at speeds ranging to thousands of feet per minute. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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On the right side, the right lymphatic duct enters at the junction of the right internal jugular and right subclavian veins, but this duct only drains lymph from the right side of the head and neck, the right upper limb, and the right half of the thoracic cavity. The lymph contained within the collectors is transported centrally and finally returned to the main blood circulation via the thoracic duct on the left side of the body, and the right lymphatic duct on the ride side. The right lymphatic duct drains the right side of the head, neck, and chest wall; it also drains the right lung and the lower half of the left lung, the heart, the dome of the liver, and the right diaphragm via the bronchomediastinal trunk. |
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