Position and actions of the anterior trunk muscles.
covers the surface of the upper chest
Adducts and inwardly rotates the arm
Beneath pectoralis major. Runs from the rib to the scapula.
Rotates the scapula downwards
Curved muscle at the side of the ribcage
Pulls the scapula forward
Slants down from the lower ribs to the pelvic girdle
flexes, rotates, and bends the trunk.
Beneath the external obliques
Flexes, rotates, and bends the trunk.
Attaches to the pubic bone and stretches the length of the abdomen to the sternum
Supports the abdominal organs and flexes the vertebral column and trunk.
Attaches to the inner surface of the ribs
Supports the abdominal organs
Dome shaped muscle that separates the abdominal cavity from the thoracic cavity
Assists breathing as contraction expands the volume of the thoracic cavity, allowing inspiration
Between the ribs, on the outside
Elevate the ribcage when breathing in
Between the ribs on the outside
Depresses the ribcage when breathing out.