17. MUSCLES OF THE SECOND LAYER MUSCLE ORIGIN INSERTION NERVE SUPPLY ACTION Levator scapulae Rhomboid minor Transverse process of upper cervical vertebrae . Lower part of ligamentum nuchae . Medial border of the scapulae . Medial border of scapula opposite to the spine. Third and fourth cervical nerves. C5 Raises the scapulae upwards and braces the shoulder backwards. Pulls the scapula medially
18. MUSCLE ORIGIN INSERTION NERVE SUPPLY ACTION Rhomboid Major Second to fifth thoracic spines Medial border of scapula opposite to the infraspinous fossa C5 Pulls the scapula medially
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