Zone 1 | Zone 2 | Zone 3 | |
Anatomic landmarks | Clavicle/sternum to cricoid cartilage | Cricoid cartilage to the mandible | Superior angle of the mandible |
Anatomic structures in zone | Proximal common carotid artery | Carotid artery | Vertebral artery |
Subclavian artery | Vertebral artery | Distal carotid artery | |
Vertebral artery | Jugular vein | Distal jugular vein | |
Lung apices | Pharynx | Salivary and parotid glands | |
Trachea | Trachea | Cranial nerves IX to XIII | |
Thyroid | Esophagus | Spinal cord | |
Esophagus | Larynx | ||
Thoracic duct | Vagus nerve | ||
Spinal cord | Recurrent laryngeal nerve | ||
Spinal cord |
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