CCC CCC ASHA Anatomy & Physiology of Communication

Question 1

Which muscle is the primary muscle of inspiration during quiet breathing?

Accepted Answer

Diaphragm

Answer

The diaphragm is the primary muscle of inspiration, contracting to increase the vertical dimension of the thoracic cavity during quiet breathing.

Question 2

The vocal folds are housed within which structure of the larynx?

Accepted Answer

Thyroid cartilage

Answer

The thyroid cartilage forms the anterior and lateral walls of the larynx and is the structure within which the vocal folds are situated.

Question 3

According to the myoelastic-aerodynamic theory of phonation, what initiates vocal fold opening?

Accepted Answer

Subglottal air pressure overcoming medial compression

Answer

Subglottal air pressure builds beneath the closed vocal folds until it overcomes medial compression, pushing the folds apart to initiate the vibratory cycle.

Question 4

Which cranial nerve provides primary motor innervation to the intrinsic muscles of the larynx?

Accepted Answer

CN X (Vagus) via the recurrent laryngeal branch

Answer

The recurrent laryngeal nerve, a branch of CN X (Vagus), provides motor innervation to all intrinsic laryngeal muscles except the cricothyroid, which is served by the superior laryngeal nerve.

Question 5

The velopharyngeal mechanism primarily functions to separate which two cavities during speech?

Accepted Answer

Oral and nasal cavities

Answer

The velopharyngeal valve separates the oral and nasal cavities, preventing unwanted nasal resonance during non-nasal phonemes.

CCC Practice Test

CCC Practice Test

CCC CCC ASHA Anatomy & Physiology of Communication