Linea alba
The linea alba is a fibrous structure that runs down the midline of the abdomen in humans and other animals.
It is formed by the fusion of the aponeuroses of the abdominal muscles, and it separates the left and right rectus abdominis muscles. It muscular individuals its presence can be seen on the skin, forming the left of right halves of a six pack.
Because it consists of just connective tissue, and contains few important nerves or blood vessels, a median incision through the linea alba is a common surgical approach.
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