Oral Physiology

Question 1

prevents bolus from entering pharynx

Answer 1

glossopalatal sphincter

temporary

Question 2

when does glossopalatal spincter form?

Answer 2

when pharyngeal part of tongue rises and touches soft palate which pushes down

Question 3

4 phases of swallowing

Answer 3

1. preparatory phase
2. oral phase
3. pharyngeal phase
4. esophageal phase

Question 4

muscles in preparatory and oral phases of swallowing

Answer 4

mandibular - masseter, medial pterygoid, temporalis

facial - labial, buccinator

Question 5

muscles involved in first two stages of swallowing are also known as

Answer 5

facultative muscles

Question 6

contraction of these muscles forms oral seal and stabilizes mandible

Answer 6

labial and buccinator

Question 7

prevent aspiration during swallowing

Answer 7

respiration inhibited
glottis moves vocal cords together
bolus moves thru sinuses in pharynx
larynx & upper esophageal sphincter elevate

Question 8

known as the “swallowing center”

Answer 8

brainstem

Question 9

3 components of swallowing center of brainstem

Answer 9

sensory nuclei
motor nuclei
interneuronal network

Question 10

afferent information during swallowing

Answer 10

starts in larynx, pharynx, esophagus
sends to NTS
results in modulation of swallowing based on consistency

Question 11

_______ functions autonomously in control of mastication

Answer 11

brainstem