truncus (trun'kus)

Gen. and pi. trunci. See trunk, t. brachial is primarius inferior. The cord formed by the union of the anterior branches of the eighth cervical and first thoracic nerve, t. brachial is primarius medius. The anterior branch of the seventh cervical nerve, t. brachial is primarius superior. The cord formed by the union of the anterior branches of the fifth and sixth cervical nerves, t. facial is efferens. A loop of communication between the adducens nucleus and the roots of the facial nerve near their exit from the medulla, t. in no min at us. See innominate artery, in table of arteries, under artery, t. lymphatic us abdominal is. A large abdominal branch of the thoracic duct. t. lymphatic us (communis) dexter. See right lymphatic duct, under duct. t. lymphatic us communis sinister. See thoracic duct. t. lymphatic us jugular is dexter. A lymphatic receiving the vasa efferent i a of the right side of the head and neck, and emptying into the right lymphatic duct. t. lymphatic us jugular is sinister. A lymphatic receiving the vasa efferent i a of the left side of the head and neck, and emptying into the thoracic duct.