The muscle is confined to the floor of the abdomen and extends from the sternum to the pubis. The two muscles are separated except at the pelvis by an interval of about 2 to 4 inches so that the abdominal wall here is entirely fibrous. Consisting the aponeuroses of the oblique and transverse muscles and abdominal tunic. It shows on its superficial face five tendinous inscriptions (linea transverse) near the second of which, is a foramen for the passage of subcutaneous abdominal vein.
Origin: Ventral and lateral parts of the sternum as forwards as the third costal cartilage.
Participants