Muscles of abdomen from "summary" of Bd Chaurasia's Human Anatomy, Volume 1 by B. D. Chaurasia
The muscles of the abdomen play a crucial role in providing support and movement to the trunk. These muscles are arranged in multiple layers, each with its specific functions and attachments. The main muscles of the abdomen include the rectus abdominis, external oblique, internal oblique, and transversus abdominis. The rectus abdominis is a long, flat muscle that extends vertically along the front of the abdomen. It is commonly known as the "six-pack" muscle due to its segmented appearance. This muscle is responsible for flexing the trunk, such as during sit-ups or crunches. The external oblique muscles are located on the sides of the abdomen and run diagonally. These muscles help with trunk rotation and bending to the side. They also play a role in compressing the abdomen, such as during activities like coughing or childbirth. The internal oblique muscles lie underneath the external obliques and run in the opposite direction. They aid in trunk rotation and bending to the side, working in conjunction with the external obliques to provide stability and support to the trunk. The transversus abdominis is the deepest layer of abdominal muscles and runs horizontally across the abdomen. This muscle acts as a natural weight belt, providing core stability and support to the spine. It also helps with forced expiration and maintaining intra-abdominal pressure.- Support the spine, and assist in various movements of the trunk. Strengthening and conditioning the muscles of the abdomen is important for overall core stability, preventing back pain, and improving athletic performance. Understanding the anatomy and function of these muscles is essential for healthcare professionals, athletes, and individuals looking to improve their physical fitness and well-being.
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