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Module 13-Advanced Biology

Across
The hole in the center of a tube
The acidic secretion of the stomach
The nutrients the body needs in large amounts: carbohydrates, fats, and proteins
The act of swallowing
A thin layer of loose connective tissue that binds an organ to surrounding tissues or organs
The process of contraction and relaxation of smooth muscle that pushes food through the alimentary canal.
Down
The nutrients the body needs in small amounts, such as vitamins and minerals
The process of chewing
The breakdown of food molecules into their individual components