science7/20

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Last updated 1:58 PM on 7/20/26
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4 Terms

1
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Chemical Digestion:

Using chemicals

called enzymes to break substances

into tiny molecules.

2
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Mechanical Digestion

The physical

breaking of food into smaller pieces

(cutting, grinding, chewing).

3
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Epiglottis

A flap of tissue that closes

off the trachea during swallowing to ensure the bolus

enters the oesophagus and not the lungs.

4
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Peristalsis

The oesophagus uses rhythmic, wave-like

muscular contractions to squeeze the bolus

down toward the stomach.