Oral Functions 4 - reflexes and speech Flashcards Preview

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Flashcards in Oral Functions 4 - reflexes and speech Deck (72)
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1

what are the 3 stages of swallowing

buccal
pharyngeal
oesophageal

2

what is the buccal phase

it is the voluntary phase
the bolus moves up and down against the hard palate and it is pushed into the oropharynx

3

what is the function of saliva in swallowing

it secretes enzymes
lingual lipase and salivary amylase

4

what does the water content of saliva do

it binds particles together to create a bolus

5

what is deglutition

food passing from mouth to stomach
consists of voluntary and involuntary contractions

6

what is deglutition controlled by

nervous system

7

what is the pharyngeal phase

involuntary
move food from pharynx to oesophagus
signals are sent from the medulla to close off the epiglottis and the uvula closes over

8

what is the esophageal phase

peristalsis
progression of involuntary wave like contractions

9

what are the two functions of swallowing

feeding function
protective function

10

what is swallowing

process by which the accumulated food bolus is transported through the lower pharynx and oesophagus to the stomach (feeding function)

11

how is swallowing preventative

it prevents ingested material from entering the lower airway

12

how is swallowing potentially dangerous

because the foodway crosses the airway

13

describe the process of swallowing liquids

liquids are gather on the tongue anterior to the pillars of the fauces
the liquid is then propelled through the oro- and hypo-pharynx and then into the oesophagus

14

what separates the mouth from the pharynx when swallowing liquids

the POSTERIOR ORAL SEAL
when swallowing liquid there is an oral seal

15

describe the process of swallowing solids

chewed food material accumulated on the pharyngeal part of the tongue and vallecula (-oro pharynx)
the bolus is then propelled through the tongue through the hypo-pharynx and then into the oesophagus

16

is there an oral seal when swallowing solids

NO

17

describe the squeeze back mechanism

the forward movement of the tongue during the occlusal and initial opening phases creates a contact between the tongue and the hard palate

the contact zone moves progressively backwards, squeezing the processed food through the fauces

18

what are the events of swallowing

propulsion of food
preventing of 'reflux'
protecting the airway

19

what does the duration of the masticatory sequence vary with

food consistency

20

what do the masticatory muscles do in humans

stabilize the swallowing process

21

how is reflux prevented

elevation of soft palate
sides of tongue contacts pillar of fauces
dorsum of tongue contacts posterior pharyngeal wall
upper oesophageal sphincter
lower oesophageal sphincter

22

what is erosion

tooth surface loss

23

how can stomach acid erode teeth

by reflux
vomiting
regurgitation
rumination

24

when palatal erosion is seen what is most likely

stomach acid

25

what is attrition

tooth wear occlusally caused by contact between occluding teeth

26

what is attrition usually due to

bruxism/parafunction

27

what is seen in attrition

the teeth inter digitate indicating that attrition is occurring
equal amounts between upper and lower

28

what is recommended for those with bruxism

psychological caused condition
can't 'treat'
can offer relaxation techniques
mouthguard to protect teeth

29

what is abrasion

due to another object

30

what may abrasion be caused of

might be caused by biting or chewing objects between the teeth for example tobacco pipes, nails or pens