Linea alba

Linea Alba

Linea alba (pronounced: /ˈliːniə ˈælbə/) is a term used in anatomy to refer to a fibrous structure that runs down the midline of the abdomen in humans and other vertebrates.

Etymology

The term "linea alba" is derived from the Latin words "linea" meaning line, and "alba" meaning white. This is in reference to its appearance as a white line running vertically down the middle of the abdomen.

Description

The linea alba is a fibrous structure that extends from the xiphoid process (a small cartilaginous process (extension) of the lower part of the sternum, which is usually ossified in the adult human) to the pubic symphysis (the midline cartilaginous joint uniting the superior rami of the left and right pubic bones). It is formed by the fusion of the aponeuroses of the abdominal muscles, and it represents the median line of fusion of the bilateral structures of the abdominal wall.

Clinical Significance

The linea alba is clinically significant as it is often involved in the development of diastasis recti (a medical condition where the right and left halves of the rectus abdominis muscle spread apart at the linea alba), hernias, and is also the site of incision in certain abdominal surgeries.

Related Terms

• Abdomen
• Xiphoid process
• Pubic symphysis
• Abdominal muscles
• Diastasis recti
• Hernia

External links

• Medical encyclopedia article on Linea alba
• Wikipedia's article - Linea alba

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