Cross Section of Neck at the 7th Cervical Vertebra
Modes of approach to the esophagus and the cervical sympathetic ganglion shown by means of a cross section of the neck at the level of the 7th cervical vertebra. A: Approach to esophagus internal to carotid sheath. B : An incision in midline beneath the hyoid bone to the esophagus. C: An approach similar to (A), median to the carotid sheath, and (D), external to the carotid sheath, to expose the cervical sympathetic ganglion and trunk and the inferior, thyroid artery.