Anatomical gap | Structures Passing Through |
Between Skull Base | – Eustachian tube – Levator veli palatini muscle – Ascending palatine artery – Palatine branch of ascending pharyngeal |
Between SC | – Stylopharyngeus muscle (supplied by CN-9) – Glossopharyngeal nerve (CN-9) |
Between MC (Thyrohyoid | – Internal laryngeal nerve (ILN) – Superior laryngeal artery & vein |
Between IC | – Recurrent laryngeal nerve (RLN) – Inferior laryngeal artery & vein |
SC- Superior constrictor
MC- Middle constrictor
IC- Inferior constrictor
