The boundary of the abdominal cavity is the abdominal wall in the front and the peritoneal surface at the rear. In vertebrates, the abdomen is a large body cavity enclosed by the abdominal muscles, at the front and to the sides, and by part of the vertebral column at the back. Abdomen, in human anatomy, the body cavity lying between the chest or thorax above and the pelvis below and from the spine in the back to the wall of abdominal muscles in the front. Explore the anatomy of the abdominal cavity, its location, structure, peritoneum, and contained organs. Learn about its physiological roles, functions, and major clinical conditions. abdominal cavity, largest hollow space of the body. Its upper boundary is the diaphragm, a sheet of muscle and connective tissue that separates it from the chest cavity; its lower boundary is the upper plane of the pelvic cavity. Abdominal pain - A discomfort that you feel in your belly area. Learn more about types, causes, symptoms, diagnosis, treatment & home remedies. For related background details, please refer to our report on wiring up trailer lights. What Is Abdominal Pain? Abdominal pain is discomfort anywhere in your belly region — the area between your ribs and pelvis. We often think of abdominal pain as “stomach pain” or a “stomachache.” But pain in your abdomen could be coming from organs other than your stomach. Abdominal pain means pain in the stomach. Usually it doesn't last long and is often due to a gut infection or a small upset - but there are many other possible causes. Pain that is severe or doesn't settle quickly may need attention from a doctor. Your abdominal muscles have many important functions, from holding organs in place to supporting your body during movement. There are five main muscles: pyramidalis, rectus abdominus, external obliques, internal obliques and transversus abdominis.

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