Answer
Contractions rectus abdominis muscle of the abdominal wall have many effects. By itself this muscle can contract to flex the spine at the lumbar region. Rectus abdominis contractions also aid in the rotation of the vertebral column..
Work Step by Step
Contractions of the rectus abdominis muscles have many effects:
1. These contractions can by themselves flex the spine at the lumbar region
Other potential effects of rectus abdominis contractions :
2a. They stabilize the pelvis
2b. They support abdominal viscera
2c. They help in the rotation of the spine at the lumbar region
2d. Fix and depress the ribs
