Laryngeal Musculature #1 Functions & Add/Abductor Flashcards
What are the functions of the laryngeal musculature?
- Regulate valve openings and closings
- Epiglottic valve
- Ventricular fold valve
- Vocal fold valve
- Provide movement of laryngeal cartilages for speech
There are two main types of muscles of the larynx. What are they?
- Intrinsic
- Extrinsic
In general, where are the attachment points for the intrinsic muscles of the larynx? What is their overall function?
- Have both origin and insertion within the larynx
- Make fine adjustments to the vocal mechanism
What are the main types of intrinsic muscles?
- Adductors (bring together)
- Abductor (pull apart)
- Tensors (tighten muscles)
- Relaxer (relax muscles)
What are the 3 Adductors called?
- Lateral cricoarytenoid
- Transverse arytenoid
- Oblique arytenoid
Action for both the lateral cricoarytenoid muscles & the transverse arytenoid muscle
- Adducts the vocal folds
What is something unique about the Transverse arytenoid?
- It is the only unpaired intrinsic muscle
Action for oblique arytenoid
- Adducts vocal folds (determines how tightly vocal folds are pressed against each other)
- Rocks arytenoid and vocal folds down and inward
Type and action of the posterior cricoarytenoid
- Abductor
- Abducts vocal folds
These Images are all a depiction of which Intrinsic Adductor laryngeal muscle?
Lateral Cricoarytenoid
Which Intrinsic Adductor laryngeal muscle is shown here?
Oblique Arytenoid
These images are all a depiction of which intrinsic adductor laryngeal muscle?
Transverse Arytenoid
Which intrinsic abductor muscle is this? (the only abductor we have to know)
Posterior Cricoarytenoid Muscles
Just for further understanding and enjoyment
Just for further understanding and enjoyment
