Linea alba (abdomen)
Fibrous structure of the abdomen / From Wikipedia, the free encyclopedia
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The linea alba (Latin: white line) is a strong fibrous midline structure[1] of the anterior abdominal wall[2] situated between the two recti abdominis muscles (one on either side). The umbilicus (navel) is a defect in the linea alba through which foetal umbilical vessels pass before birth.[1] The linea alba is formed by the union of aponeuroses (of the muscles of the anterior abdominal wall[2]) that collectively make up the rectus sheath. The linea alba attaches to the xiphoid process superiorly, and to the pubic symphysis inferiorly. It is narrow inferiorly where the two recti abdominis muscles are in contact with each other posterior to it, and broadens superior-ward from just inferior to the umbilicus.[1]
This article needs more reliable medical references for verification or relies too heavily on primary sources. (March 2024) |
Linea alba | |
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Details | |
Identifiers | |
Latin | linea alba |
TA98 | A04.5.01.022 |
TA2 | 2377 |
FMA | 11336 |
Anatomical terminology |
The name means white line as it is composed mostly of collagen connective tissue, which has a white appearance.[citation needed]
In sufficiently muscular individuals, its presence can be seen on the skin, forming the depression between the left and right halves of a "six pack".[citation needed]