Thoracic cardiac nerve
thoracic cardiac nerve n.
Any of the branches from the second to the fifth segments of the thoracic sympathetic trunk that pass forward to enter the cardiac plexus.
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- Thoracic cavity
thoracic cavity n. The space within the walls of the chest, bounded below by the diaphragm and above by the neck, and containing the heart and the lungs.
- Thoracic-duct
noun, Anatomy. 1. the main trunk of the lymphatic system, passing along the spinal column in the thoracic cavity, and conveying a large amount of lymph and chyle into the venous circulation. thoracic duct noun 1. the major duct of the lymphatic system, beginning below the diaphragm and ascending in front of the spinal column […]
- Thoracic ganglion
thoracic ganglion n. Any of 11 or 12 ganglions at the level of the head of each rib on either side that with the connecting nerve cords constitute the thoracic portion of the sympathetic trunk.
- Thoracic iliocostal muscle
thoracic iliocostal muscle n. A muscle with origin from the medial side of the angles of the lower six ribs, with insertion to the angles of the upper six ribs, with nerve supply from the dorsal branches of the thoracic nerves, and whose action extends, abducts, and rotates the thoracic vertebrae.
- Thoracic limb
thoracic limb n. See upper extremity.