★ Body Systems Quiz
Peristalsis: a series of wave-like muscle contractions that moves food to different processing stations in the digestive tract.
Is this an example of chemical or physical digestion?
A. Physical
B. Chemical
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Diffusion is…..
A. something that makes the room smell nice.
B. the movement of a substance (liquids and gasses) from an area of high concentration to an area of low concentration.
C. all to do with expelling waste products from our bodies.
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