function of digestion system 2 Flashcards
1
Q
what is chemical digestion
A
enzymes breakdown food particles into simple chemicals that can be used by the body
2
Q
what happens after chemical digestion
A
food is packaged into small parcels (Bolus)
and swallowed (deglutition)
3
Q
what happens as bolus passes through the pharynx
A
epiglottis closes the tracheal opening so that food doesn’t enter respiratory system so food passes into the esophagus
4
Q
what is peristalsis
A
contraction of muscles
5
Q
what does peristalsis do
A
moves bolus through gastric sphincter to the stomach
6
Q
what prevents reflux of food back into the esophagus
A
esophageal (cardiac) sphincter
