Internal jugular veins. Carotid neurovascular bundle. Pharynx with its inferior constrictor muscle. Oesophagus with muscle layer and trachea with thyroid gland laterally. Common carotid arteries.
Internal jugular veins.
Oesophagus, smaller than in C4. Small dark masses near posterolateral borders of thyroid gland are the parathyroid glands from the caudal part of 3rd pharyngeal pouch. Common carotid artery. L brachiocephalic vein. Apex of R lung in pleural cavity.