linea alba definition
The linea alba is a fibrous structure that runs down the midline of the abdomen in humans and other vertebrates. In human linea alba runs from xiphoid process to pubic symphysis. The name means white line and the linea alba is indeed white, being composed mostly of collagen connective tissue. It is formed by the fusion of the aponeuroses of the abdominal muscles, and it separates the left and right rectus abdominis muscles.