Quiz11

Question 1

Oral Prepatory Main Points

Answer 1

-Begins when substance touches structures of anterior oral vestibule

-Velopharynx is open

-Breathing may continue or stop temporarily (apneic interval)

-Lasts up to 20 seconds

Question 2

Oral Transport phase

Answer 2

-Tongue elevates to move bolus towards pharynx

-Lips may press together and cheeks move slightly inward

-Velum begins to elevate

-UES begins to relax

-1 second long

Question 3

Pharyngeal Phase

Answer 3

-Under automatic control

-Velopharynx closes forcefully

-Hyolaryngeal complex moves upward and forward

-Larynx closes at three levels: vocal folds adduct, ventricular folds adduct, epiglottis folds down over the larynx.

-Tongue pushes bolus into pharynx, pharynx constricts to squeeze bolus towards esophagus

-Bolus divides to pass through left and right valleculae to left and right pyriform sinuses

-UES opens

-1 second or less

Question 4

Esophageal phase

Answer 4

-Bolus enters UES

-Peristaltic actions propel bolus with pressure differentials

-Primary peristalsis may be followed by secondary peristalsis

-8 to 20 seconds