Muscular movements that mix food in the lumen of the small intestine are referred to as

This is segmentation. This is the process that allows food to be digested by the intestines. Unlike peristalsis, which takes place in the esophagus and is a one-way movement, this is a circular-type mixing action that allows for the continued mixing of the food with the chyme before moving along the gastrointestinal tract.

Hydrosphere is the correct answer

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