Anything passing through the sulcus of auditory tube
- The cartilage of pharyngotymanic tube attaches it. Medially it continues above the scaphoid fossa at the base of the pterygoid process of the sphenoid bone. Lateral leads to the musculotubal canal.
- In living body, the inner part of the cartilage of tube opens into the pharynx at the pharyngeal opening of auditory tube, and the outer part passes into the tympanic cavity (middle ear) through the canal for auditory tube of the musculotubal canal.