Origin/Insertion of Muscles - Core Muscles (Transverse Abdominis and Rectus Abdominis)

Your Core Muscles are used to stabilise the pelvis during dynamic movement and stabilising and movement of the spine and pelvis. By stabilising the spine you are decreasing the risk of back injury.
Major Muscle include:

• Transverse Abdominis
• Rectus Abdominis
• Internal and External Obliques

Muscles of the Core

 

Transverse Abdominis
Origin: Anterior iliac crest; lateral half of inguinal ligament, throacolumber fascia and cartilages of ribs 6-1
Insertion: Abdominal aponeurosis to linea alba, xyphoid process and pubic symphysis
Action: Compression of Abdomen



Transverse Abdominis

Iliac Crest and Pubic Symphysis

Xiphoid Process

Rectus Abdominis
Origin: Pubic crest and symphysis pubis
Insertion: Costal cartilages of ribs 5-7; xyphoid process of sternum
Action: Flexes vertebral column (torso); compresses abdomen

Pubic Crest and Symphysis Pubis

Costal cartilages