chest, abdomen, and back muscles

Pectoralis major: prime mover if arm, rotates medially

Rectus abdominis: flex and rotates lumbar spine region

External oblique:flex vertebral column and compress abdominal wall

Internal oblique:flex vertebral column and compress abdominal wall

Transversus abdominis:compresses abdominal contents

Diaphragm:prime mover for inspiration

Internal intercostals: draws ribs together and depress rib cage

External intercostals: pulls ribs toward each other to elevate rib cage

External oblique: flex vertebral column and compress abdominal wall

Transversus abdominis: compresses abdominal contents

Internal oblique: flex’s vertebral column and compress abdominal wall

Rectus abdominis: flex and rotates vertebral column

Latissimus dorsi: prime mover of arm extension, medially rotates arm and shoulder

Trapezius: stabilizes, raises, retracts, and rotates scapula

Latissimus dorsi: prime mover in arm extension, medially moves arm and shoulder

Erector spinae: prime mover of back extension

Quadratus lumborum: flexes vertebral column laterally