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Anatomy/Physiology of the Larynx
Intrinsic and Extrinsic Muscles of the Larynx
18
Anatomy
Undergraduate 2
10/05/2010

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Term
Sternohyoid
Definition
Depressor
Term
Omohyoid
Definition
Depressor
Term
Sternothyroid
Definition
Depressor
Term
Thyrohyoid
Definition
Depressor
Term
Anterior and Posterior Digastricus
Definition
Elevator
Term
Stylohyoid
Definition
Elevator
Term
Mylohyoid
Definition
Elevator
Term
Geniohyoid
Definition
Elevator
Term
Genioglossus
Definition
Elevator
Term
Hyoglossus
Definition
Elevator
Term

Thyropharyngeus

Cricopharyngeus Muscle

Inferior Constrictor

Definition
Elevator
Term
Cricothyroid Muscle
Definition
Lengthens & Increases Tension of Vocal Ligaments
Term
Lateral Cricoarytenoids
Definition
Adduction of Vocal Ligaments
Term
Posterior Cricoarytenoids
Definition
Abduction of Vocal Ligaments
Term
Transverse/Oblique Interarytenoids
Definition

Draw arytenoids together; adduct vocal folds.

Oblique is superficial to Transverse

Term

Thyroarytenoids:

Muscularis (Lateral)

Vocalis (Medial)

Definition
Shortening/Relaxation of vocal folds
Term
Cricoarytenoid joint
Definition
Rocking motion produces up and out motion of vocal process during ABduction, and in and down motion during ADduction.
Term
Cricothyroid Joint
Definition
Pivot joint increases tension of vocal folds which causes increases in pitch
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