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Abdominal Muscles Anatomy

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Updated March 27, 2014

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Abdominal Muscle Anatomy - The Transversus Abdominis
The Transversus Abdominis Muscle

The Transversus Abdominis Muscle

Gray's Anatomy/Wickimedia Commons
The deepest layer of abdominal muscles is called the "transversus abdominis." The transverse abdominal muscle wraps around the torso from front to back and from the ribs to the pelvis. The muscle fibers of the transversus abdominis run horizontally, similar to a corset or a weight belt.

This muscle doesn't help move the spine or the pelvis, but it does help with respiration and breathing. This muscle helps facilitate forceful expiration of air from the lungs, stabilizes the spine and helps compress the internal organs.

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