some contraction followed by relaxation make food down
https://nursingtutorsnearme.com/wp-content/uploads/2020/10/logo-1-300x75.png00developerhttps://nursingtutorsnearme.com/wp-content/uploads/2020/10/logo-1-300x75.pngdeveloper2021-02-05 08:00:542021-02-05 08:00:54What are contractions that repel food down the gastrointestinal tract known as?
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