<prompt> Rectus abdominis free flap is supplied by:Intercostals arteryIliolumbar arteryEpigastric arteryThoraco-lumbar artery  <response>: The rectus abdominis muscle flap is supplied by 2 vascular pedicles, the cranial and caudal epigastric vessels .The principal blood supply is the caudal epigastric artery, which perfuses approximately 23 of the length of the muscle, with the remainder of the muscle supplied by the cranial epigastric artery. 