The Shoulder Girdle Elevators Flashcards
Name The Shoulder Girdle Elevators
Trapezius (Upper), Levator Scapulae
Trapezius (Upper) origin
superior nuchal line and external occipital protuberance
Trapezius (Upper) insertion
lateral third of the clavicle
Trapezius (Upper) nerve supply
Spinal accessory nerve (XI)
Trapezius (Upper) actions
Scapulothoracic joint: elevates the scapula
Atlantooccipital joint: extends the neck (when contracted bilaterally – from both sides) and laterally flexes the neck (when contracted unilaterally – from one side)
Atlantoaxial joint: enables head rotation
Trapezius (Upper) functions
Shrugging shoulders
Levator scapulae origin
Transverse processes C1-4
Levator scapulae insertion
Upper part of medial border of scapula
Levator scapulae nerve supply
Dorsal scapular nerve C5
Levator scapulae action
Elevates, retracts & medially rotates pectoral girdle
Laterally flexes & extends neck
Levator scapulae function
Shrugging shoulders