Voice Disorders exam 1 Flashcards
(20 cards)
What intrinsic laryngeal muscle is the only VF abductor?
The Posterior Cricoarytenoid
What intrinsic laryngeal muscle is most important for VF adduction?
lateraly cricoarytenoid
What can happen if there is a lack of VF adduction?
There will be an increased risk of aspiration
Which intrinsic laryngeal muscle is important for change in pitch?
cricothyroid
What two qualities of the cricothryoid make it different than the other laryngeal intrinsic muscles?
- It is the only intrinsic muscle not innervated by the recurrent laryngeal nerve (RLN)
- It is innervated by the SLN
What are the three levels of laryngeal protection of the lower airway?
- Epiglottis
- False vocal folds
- True vocal folds
If the vocal folds are stiff and lack appropriate tension, how would pitch be affected and why?
Pitch may sound monotone. There will be an inability to increase pitch.
Mr. P has a lesion on the vagus nerve on the right side at a level above the RLN branch but below the SLN. What functions are affected and to what degree?
VF abduction and adduction are affected? There may e some form of VF paralysis or paresis
Movement of which cartilage is essential for VF vibration?
The arytenoid
Which laryngeal joint is responsible for tension of the VF?
The cricothyroid joint
What is the space above the false vocal folds called?
The laryngeal vestibule
What is the space between the true and false vocal folds called?
The laryngeal ventricle
What is ventricle dysphonia?
Closing of the false VF
What is the primary mechanism for increasing loudness?
Increasing subglottal pressure
What are possible causes of a breathy voice?
Incomplete glottal closure
issues in RLN
What are possible causes of a hoarse voice?
Aperiodicity
Mucosal wave abnormalities
(Issues with RLN, cerebellar issues for synchronicity)
What are possible causes of strain?
Supraglottal muscle tension
False vocal fold closure
What can cause vocal fold paralysis?
Unilateral or bilateral lesion to the RLN
can cause focal fold abduction and/or adduction
What can cause monotone pitch?
Lesion on the SLN or damage to the cricothryroid
What causes the inability to increase loudness?
VF abduction and adduction difficulties that control subglottal air pressure
Impairment on the RLN
