Abdominal Muscles Quiz

Which of the following muscles is considered the only true posterior wall muscle?

• Rectus abdominus

• Quadratus lumborum

• Transversus abdominis

• Pyramidalis

What is the primary function of the transversus abdominis muscle?

• To compress the abdominal contents

• To rotate the torso laterally

• To extend the thigh

• To flex the vertebral column

Which muscle is responsible for the 'six-pack' appearance?

• External oblique

• Internal oblique

• Rectus abdominus

• Pyramidalis

What is the role of the psoas major muscle?

• To extend the vertebral column

• To flex the thigh at the hip

• To compress the abdominal contents

• To rotate the torso contralaterally

Which muscle is not always present in all individuals?

• Diaphragm

• Quadratus lumborum

• Iliacus

• Psoas minor