- Rhomboids Major (Medial Border of the Scapula between the Spine of the Scapula and the inferior angle)
- Rhomboids Minor ( Superior Border of the Scapula)
- Both Major and Minor are Synergists (work with another muscle) to the Trapezius when retracting the Scapula (pulling the shoulder blade closer to mid-line of body).
- Both Major and Minor are Synergists with Pec Minor and Levator Scapula in downward rotation of the Scapula.
- Both muscles lie underneath the Trapezius muscle and is difficult to develop and grow