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Dec 30, 2023
The muscles of the abdominal wall are a group of muscles that surround and protect the organs in the abdominal cavity. They play a crucial role in maintaining posture, supporting the spine, and assisting in movements such as bending, twisting, and lifting.
The main muscles of the abdominal wall include:
1. Rectus abdominis: This is a long, flat muscle that runs vertically along the front of the abdomen. It is commonly referred to as the "six-pack" muscle and is responsible for flexing the trunk and compressing the abdominal contents.
2. External oblique: These muscles are located on the sides of the abdomen and run diagonally from the lower ribs to the pelvis. They help with trunk rotation and bending sideways.
3. Internal oblique: These muscles lie underneath the external obliques and run in the opposite direction. They assist in trunk rotation and bending sideways, as well as compressing the abdominal contents.
4. Transversus abdominis: This is the deepest muscle of the abdominal wall and runs horizontally across the abdomen. It acts as a corset, providing stability to the spine and compressing the abdominal contents.
These muscles are interconnected by a network of connective tissue called the linea alba, which runs vertically down the midline of the abdomen. The abdominal muscles are also supported by other muscles such as the diaphragm, which separates the abdominal cavity from the chest cavity, and the pelvic floor muscles, which provide support to the organs in the pelvis.
Overall, the muscles of the abdominal wall work together to provide stability, protect the organs, and assist in various movements and functions of the trunk.
The main muscles of the abdominal wall include:
1. Rectus abdominis: This is a long, flat muscle that runs vertically along the front of the abdomen. It is commonly referred to as the "six-pack" muscle and is responsible for flexing the trunk and compressing the abdominal contents.
2. External oblique: These muscles are located on the sides of the abdomen and run diagonally from the lower ribs to the pelvis. They help with trunk rotation and bending sideways.
3. Internal oblique: These muscles lie underneath the external obliques and run in the opposite direction. They assist in trunk rotation and bending sideways, as well as compressing the abdominal contents.
4. Transversus abdominis: This is the deepest muscle of the abdominal wall and runs horizontally across the abdomen. It acts as a corset, providing stability to the spine and compressing the abdominal contents.
These muscles are interconnected by a network of connective tissue called the linea alba, which runs vertically down the midline of the abdomen. The abdominal muscles are also supported by other muscles such as the diaphragm, which separates the abdominal cavity from the chest cavity, and the pelvic floor muscles, which provide support to the organs in the pelvis.
Overall, the muscles of the abdominal wall work together to provide stability, protect the organs, and assist in various movements and functions of the trunk.
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