Origin
Pubic crest.
Insertion
Sternum – xiphoid cartilage, costal cartilages of ribs 5, 6,7.
Blood supply
Inferior epigastric artery.
Nerve supply
Thoracoabdominal nerves.
Action
The rectus abdominis extends all over the abdomen and helps the internal vital organs such as the liver and intestines from getting injured. The intra-abdominal pressure which is essential for emptying the bowel and during childbirth is produced by the rectus abdominis. It is also necessary for respiration.
Disease/Injury
The rectus abdominis muscle can be injured as a result of direct trauma, dehydration, or by abuse of alcohol or drugs.
Muscle Exercise
Abdominal crunches, bent knee hip raise, leg raise, front plank and twisting motions help to strengthen your rectus abdominis.
Interesting facts
The much sought after ‘six-pack’ is actually the rectus abdominis muscle.
