9. Oral Functions 3 (Feeding)

Question 1

Components of the feeding sequence (3)

Answer 1

Ingestion
Stage I transport
Mechanical processing

Question 2

Description of ingestion (3)

Answer 2

Movement of food from external environment into mouth
Accomplished by biting/using tools
Lips provide anterior oral seal

Question 3

Description of stage I transport (4)

Answer 3

Moving material from front of teeth to level of post. teeth
Food gathered on tongue tip
Tongue retracts, pulling material to post. teeth
Associated with retraction of hyoid bone and narrowing of oropharynx

Question 4

Description of mechanical processing (3)

Answer 4

Some solid foods must be broken down and mixed with saliva before they can be swallowed
Moist solid foods have to have fluid removed before transport and swallowing
Foods chewed against premolars/molars. Some soft foods squashed by tongue against hard palate

Question 5

Function of tongue in feeding sequence

Answer 5

Key role in controlling and transporting food bolus within the mouth

Question 6

Function of intrinsic tongue muscles

Answer 6

Alter shape of tongue

Question 7

Function of extrinsic tongue muscles

Answer 7

Alter shape and position of tongue

Question 8

Description of squeeze-back mechanism (2)

Answer 8

Forward movement of tongue during occlusal/initial opening phases creates contact between tongue and hard palate
Contact zone moves progressively backwards, squeezing processed food through fauces

Question 9

When is a posterior oral seal produced

Answer 9

During ingestion of liquids

Question 10

SDA is the minimum considered acceptable for (3)

Answer 10

Masticatory functions
Aesthetics
Maintenance of OH