Anatomy and Physiology
Anatomy is the study of the structure of body parts. For example, the stomach is a J-shaped, pouchlike organ. The stomach wall has thick folds, which disappear as the stomach expands to increase its capacity. Physiology is the study of the function of body parts. For example, the stomach temporarily stores food, secretes digestive juices, and passes on partially digested food to the small intestine.
Anatomy and physiology are closely connected in that the structure of an organ suits its function. For example, the stomach's pouchlike shape and ability to expand are suitable to its function of storing food. In addition, the microscopic structure of the stomach wall is suitable to its secretion of digestive juices, as we shall see later in the text.
Anatomy is the study of the structure of body parts, and physiology is the study of the function of these parts. Structure is suited to the function of a part.
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