The linea alba is a fibrous structure that runs vertically down the middle of the abdomen, connecting the left and right abdominal muscles. It is made up of collagen fibers and serves as an attachment point for these muscles.
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Rectus abdominis: A major abdominal muscle that extends along the front of the abdomen, from the sternum down to the pubic bone, contributing to spinal stability and movement.
Transverse abdominis: The deepest layer of abdominal muscles that wraps around the torso from front to back, acting like a corset to enhance core stability.
Tendinous intersections: Horizontal bands of tissue that segmentally cross the rectus abdominis muscle, giving it a segmented appearance often referred to as a "six-pack.