Intrinsic Laryngeal Muscles
Intrinsic laryngeal muscle
Phonatory Physiology
The vibratory cycle
Phonatory Physiology Lecture 2
100
primarily categorized as:
-abductors -adductors -tensors -relaxers
100
The thyroarytenoid consists of 2 muscles: 1. 2. that do what?
1. thyrovocalis: tenses the VF 2. thyromuscularis: shortens and relaxes
100
5 layers of VF tissue
- Epithelium - Lamina Propria: superficial, intermediate, deep - Vocalis
100
the glottis closes within _ mm and Ps builds up
3
100
3 different types of onset
- simultaneous - breathy - glottal
200
The cricothyroid is not innervated by the RLN, it is innervated by the____________
SLN
200
The intrinsic laryngeal muscles are primarily responsible for what?
sound generation
200
Area between the epithelium and superficial layer of lamina propria
basement membrane zone
200
The Myoelastic Aeorodynamic Theory means that vocal folds:
are elastic and compressible
200
The psychological correlate of fundamental frequency is
Pitch
300
Interarytenoids are adductors and is 2 parts:
- transverse interarytenoid - oblique interarytenoid
300
The categories of the intrinsic laryngeal muscles are based on their effects of the shape of the __________, and on vibratory behavior of the VF.
Glottis
300
TRUE/ FALSE: phonation refers to any type of laryngeal sound production resulting from vibration of the TVFs EX: coughing, laughing, throat clearing
TRUE
300
The VF open _________ to __________ during the vibratory cycle
Inferiorly to superiorly
300
What are the 4 main factors that contribute to changing fundamental frequency
- mass - tension - length - respiratory drive
400
The _________ is the abductor of the larynx that originates at the shallow depression of the posterior aspect of the quadrate lamina of the circoid cartilage
PCA- Posterior Cricoarytenoid
400
____________ refers to approximating the VF
Adduction
400
Where does air pressure build up for VF vibration
Beneath TVF: sub glottal pressure
400
These are 3 vocal qualities
modal, pulse, and falsetto
500
The ________ is split into the pars recta and the pars oblique
Cricothryoid
500
TRUE/ FALSE: all intrinsic muscles are paired
TRUE
500
Males typical fundamental frequency is:
125 Hz
500
The __________Effect is a given constant volume airflow, at a point of construction will be a decrease in pressure perpendicular to the flow and an increase in velocity of the flow
Bernoulli
500
Termination of phonation is caused by
abduction of vocal folds
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