Overview
It is enclosed in the rectus sheath, formed by the aponeuroses of the oblique and transverse abdominal muscles. The two recti are separated by the linea alba.
Origin
Sternum and the cartilages of the first ribs.
Insertion
Pecten of the pubis, through the prepubic tendon.
Action
Compresses the abdomen and flexes the vertebral column.
Innervation
Ventral branches of the caudal thoracic and cranial lumbar nerves.
Clinical relevance
Ventral midline laparotomy goes through the linea alba, between the two recti; it is one of the approaches for ovariohysterectomy in the queen, along with the flank approach. The prepubic tendon can rupture after trauma.