Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

1a5a. ENT > The Phonatory Pathway > Flashcards

The Phonatory Pathway Flashcards

1
Q

What are the three functions of the larynx?

A

Respiratory
Protective
Phonation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the name of the area between the vocal cords?

A

Rima Glottidis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What happens to the vocal folds during forced inspiration?

A

They abduct to allow the passage of air

< >

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What muscle can be used to open the rima glottidis?

A

Posterior cricoarytenoid muscle

< >

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the mechanisms of the protective function of the larynx?

A

Glottic closure
Cough reflex
This firmly closes the rima glottidis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What muscle can be used to close the rima glottidis?

A

Lateral cricothyroid muscle
> <
The arytenoid muscle can then further draw the cartilage together

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the function of the pharynx in phonation?

A

Increases vocal resonance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the subglottal pressure threshold?

A

Contraction of the inspiratory muscles helps to build subglottic pressure; once a specific threshold is reached the air crosses the vocal cords causing vibration.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What do the different movements of the vocal cords translate to in sound?

A 
Tension = increased pitch
Relaxation = decreased pitch
Adduction = quieter
Abduction = louder
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What nerve innervates the intrinsic muscle of the larynx?

A

Inferior laryngeal branch of the vagus nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the two groups of laryngeal muscles?

A

Thyroarytenoid muscles - relaxes vocal ligaments

Cricothyroid muscles - tenses vocal ligaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the innervation of the mucosa above the laryngeal folds?

A

Internal laryngeal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the innervation of the mucosa below the laryngeal folds?

A

Inferior laryngeal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What nerve supplies all the intrinsic muscles apart from the cricothyroid?

A

Inferior laryngeal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the course of the vagus nerve?

A

Passes through the jugular foramen
Gives off superior laryngeal nerve
Descends through the neck within the carotid sheath
Gives off recurrent laryngeal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What nerve converys the cough relfex?

A

Vagus nerve –> internal laryngeal nerve

17
Q

What muscles cause glottic closure in the cough reflex?

A

Lateral cricoarytenoid and arytenoid

18
Q

What is the function of the vagus nerve?

A

Sensory and motor supply to the palate, pharynx and larynx

19
Q

How are oral sounds produced?

A

The soft palate tenses (CN V3) and elevates (CN X) to close off the entrance to the nasopharynx
This directs air through the nasal cavity

20
Q

Which nerve allows for tongue movement?

A

CN XII

21
Q

What nerve allows movement of teeth and lips?

A

CN VII

22
Q

How are nasal sounds produced?

A

Soft palate tenses and descends to close off the entrance to the oropharynx

1a5a. ENT (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions