Intrinsic laryngeal movements
Four principal functional roles of the larynx:
- Phonation = movement of arytenoids
- Sphincteric
- Coughing
- Breath-holding whilst straining (vocal cord adduction)
Innervation - Recurrent laryngeal nerve
- Role of the recurrent laryngeal nerve in supply to the intrinsic muscles
- The clinical effects of partial & complete recurrent laryngeal nerve paralysis
- Details of the supply to the mucous membrane and of laryngeal blood supply are NOT required
Extrinsic muscles
- Appreciation of the need for elevators & depressors to effect swallowing: individual muscle names & actions not required