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thoracic duct

tho·rac·ic duct (plural tho·rac·ic ducts)


noun 
Definition:
 
main lymphatic vessel: the main duct of the lymphatic system, which drains lymph from smaller lymph vessels in the trunk and returns it to the bloodstream by emptying into a major vein. In human beings, it ascends in front of the spinal column and discharges into the left subclavian vein at the base of the neck.

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