The rhomboid lies beneath the middle of the trapezius. It has 2 sections, the rhomboid major (lower) and the rhomboid minor (upper). It has two major actions: scapula adduction and downward rotation. The direction that the fibers run in the rhomboid makes the muscle ideally suited for downward rotation.

Origin

The rhomboid originates on the spinous processes of the upper thoracic vertebrae.

Insertion

It inserts on the medial border of the scapula.

Function

Scapula adduction and downward rotation.

Lat Pulldown

Lateral Prone Raise

Pullover

Shoulder Shrug

Bar Dips