abdomen muscle diagram

August 03, 2026

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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. An abdomen (also belly or stomach[1] in vertebrates, or metasoma in arthropods) is the front part of the torso between the thorax (chest) and pelvis in humans and in other vertebrates. The abdomen is divided into four quadrants, and knowing which organs sit in each one can help you make sense of pain, talk to a doctor more clearly, and catch problems early. The abdomen holds and protects vital organs like the stomach, liver, and intestines. You can drink water and eat more fiber to help prevent constipation and kidney stones. The abdomen contains many of the body’s vital organs and plays a central role in digestion, circulation and immunity. This section examines the layered anatomy of the abdominal wall and the organisation of the internal viscera. For related background details, please refer to our report on chevy truck fuse box diagram. The abdomen and pelvic regions are continuous with each other, making up the distal part of the trunk. Bar the brain, heart and lungs, this region contains virtually all your body organs, including those involved in the digestive, endocrine, lymphatic, urinary and reproductive systems. There are many different organs in your abdomen. So, your healthcare provider may narrow down the pain you’re having by which area you’re feeling it in. Providers often group your abdomen into quadrants, or four parts. The abdomen contains digestive organs including the stomach, intestines, pancreas, liver, and gallbladder. Problems affecting these organs and others can cause abdominal pain.