Muscles of the Vertebral Column, Respiration, and Abdominal Wall

Functions of the Erector Spinae

Keeps you upright, Straightens spine

Erector Spinae

Function of the Intercostal external

helps keep air in by moving ribs up and out

Function of the Intercostal internal 

brings ribs back inward only when forcing a air out 

Intercostals 

Functions of the Diaphragm

Allows you to breathe in, Allows blood to return to heart easier 

Diaphragm

Functions of the rectus Abdominis

Steadies back and trunk, Helps poop, Sit up Muscle

Rectus Abdominis

Functions of the External Oblique

works with internal oblique to do side crunches

Pulls

External Oblique

Functions of internal oblique

works with external Oblique to do side crunches, Steadies 

Internal Oblique 

Functions of transverse Abdominis

Compresses Abdominal Cavity, Helps poop, Stabilizes trunk

Transverse Abdominis