Essentials of Human Anatomy & Physiology, Global EditionThe stomach is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates. The stomach has a dilated structure and functions as a vital digestive organ. In the digestive system the stomach is involved in the second phase of digestion, following chewing. It performs a chemical breakdown due to enzymes and hydrochloric acid. In humans and many other animals, the stomach is located between the oesophagus and the small intestine. It secretes digestive enzymes and gastric acid to aid in food digestion. The pyloric sphincter controls the passage of partially digested food chyme from the stomach into the duodenum where peristalsis takes over to move this through the rest of the intestines.
Anatomy and Physiology
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Genres: Anatomy. Many people contributed to our efforts in the creation of this twelfth edition. We offer our profound thanks to the following reviewers, whose thoughtful critiques informed and enhanced our development of this edition:.
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