Linea Alba: Attachments, Relations And Function - Kenhub

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Linea alba

Linea alba (Latin ‘white line’) is a tendinous, fibrous raphe that runs vertically down the midline of the abdomen. It extends between the inferior limit of the sternum and the pubis, separating the rectus abdominis muscles. In leaner, more muscular individuals, it is visible externally as a longitudinal, shallow groove. 

Even though the linea alba is not a muscle, Terminologia Anatomica lists it under abdominal muscles. Why would that be? It’s because the linea alba is formed by the interlacing aponeuroses of three vertical abdominal muscles: external oblique, internal oblique and transversus abdominis muscles.

Read on if you would like to learn more about the anatomy, relations and function of the linea alba.

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