Swallowing

Question 1

What are the stages of swallowing?

Answer 1

Ingestion
Stage 1 transport
Mechanical processing
Stage 2 transport
Swallowing

Question 2

What is ingestion?

Answer 2

Food enters into the mouth from external to internal environment. Anterior oral seal with lips

Question 3

What is stage 1 transport?

Answer 3

Food controlled by the tongue tip and moved onto occlusal surfaces of posterior teeth

Question 4

What is mechanical processing?

Answer 4

Solid foods broken and mixed with saliva before swallowing
Bolus of food is squashed against palate and tongue
Food is chewed with premolars and molars

Question 5

What is stage 2 transport?

Answer 5

Bolus moves anterior to posterior by squeezeback
Solid foods moved through fauces to pharyngeal surfaces of the tongue
Seal holds liquids at pillars of fauces

Question 6

What is swallowing?

Answer 6

Involuntary movements push bolus through pharynx to oesophagus
Epiglottis closes to prevent backflow
Peristalsis occurs to move bolus toward stomach