Function: Thick triangular muscle covering the shoulder joint, used to raise the arm from the side.

Function: Larger muscles assist in drawing the shoulder forward and rotate the arm inward; the smaller muscles assist in drawing the shoulder downward and forward.

Function: Assists in extending the forearm away from the body.

Function: Draws the arm backward and downward and rotates the front of the arm toward the body.

Function: Assists in flexing and abducting the hands and fingers.

Function: Straightens and helps stabilize the knee, extends the leg or bends the hip joint.

Function: Helps bend the knee contracting the leg and helps straighten the hip.

Function: Assists in bending the forearm toward the body.

Function: The group of muscles supporting the spine; assists in sitting and standing up straight.

Function: Flexes, rotates and bends the trunk.

Function: Pulls the heel up and thus extends the foot downward; provides the propelling force in running and jumping.

Function: Extends, abducts, and rotates the thigh.

Function: Pulls the chest down and compresses the abdominal cavity. Also assists in rotating and bending the trunk side to side.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.

Identify the muscle.