Rectus Abdominus is the most superficial of the abdominal muscles. It is this muscle which forms the six-pack shape!

Origin

  • Crest of the pubis
  • Pubic symphesis

Insertion

  • Xiphoid process (base of the sternum)
  • 5th,6th and 7th costal cartilages

Actions

  • Flexes lumbar spine

Innervation

  • Ventral rami of thoracic nerves

Daily uses

  • Moving from lying to sitting

How can I stretch it?

How can I strengthen it?

Neck and Back Muscles:

More Human Muscles: