Phonatory System: Biological Physiology (EXAM 2)

Question 1

Swallowing

Answer 1

Larynx provides protective role by preventing solids/liquids from entering lungs

Question 2

3 levels of protection for larynx

Answer 2

1. Larynx pulled up and forward
2. Epiglottis pulled down
3. Glottis closed tight

Question 3

Larynx pulled up and forward

Answer 3

Muscles: Geniohyoid, Mylohyoid, Digastric anterior

Results: helps move epiglottis over top of airway
pulls larynx away from pharynx where the food is

Question 4

Pulls epiglottis down

Answer 4

Muscles: Aryepiglottic muscle

Result: Entrance to larynx closed

Question 5

Glottis closed tight

Answer 5

Muscles: Lateral cricoarytenoids, transverse arytenoids, and oblique arytenoids

Question 6

Steps

Answer 6

1.) open airway visible while bolus in oral cavity (oral prep)

2.) as food transported out, epiglottis begins to lower, glottis begins to narrow (oral transport)

3.) As food moved in pharyngeal cavity, epiglottis completely lowered and glottis narrows more (oral transport)

4.) Food passes through pharynx, epiglottis completely and glottis closed (pharyngeal transport)

Question 7

Brief disruption in exhalation during swallowing

Answer 7

Most people swallow in the beginning of exhalation
Resumption of exhaled airflow after swallowing blows away any left behind residue from laryngeal cavity

brief apnea (stopping of breath) while swallowing (since glottis closed)