MEDRADSC 2H03 Lecture 11: 2RA3 Neck Anatomy

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 2H03
• Professor: Alana Trainor

Document Summary

Nasopharynx: posterior boundary: clivus and upper cervical spine. In the roof/posterior wall is the pharyngeal tonsils (adenoids) Inferior boundary: soft palate and extends down to the level of the uvula. In the lateral wall: eustachian tube (auditory tube opening, connecting middle ear to nasopharynx) Laryngopharynx: hyoid bone entrance to larynx/esophagus, continues as the esophagus at the level of cricoid cartilage, piriform sinuses: 2 depressions in the anterior walls, divert food away from the entrance of the larynx and into the esophagus. Clivus: density is the same as cervical spine, it is bone, created by the basilar portion of occipital sphenoid bones to create the slope. 9 cartilages, running from c3-c6 linked by ligaments, Laryngopharyx trachea moved by muscles: 3 cartilages are unpaired: Epiglottis: attaches to posterior to thyroid, leaf shaped, folds over the larynx to close out food from respiratory tract. Arytenoid: shaped like pyramids, posterior part of larynx, on top of cricoid.