Unit 2 - Muscles Of Shoulder And Arm Flashcards
Retraction of scapula
Medial borders toward each other (shoulders pulled back)
Protraction
Shoulders are pulled away from each other (bad posture)
Elevation of scapula
Shoulders move up
Depression of scapula
Shoulders move down
Lateral Rotation of scapula
After abduct 90 degrees before full abduction
Downward rotation of scapula
Go from fully abducted down to 90 degrees
Which muscles produce actions on the scapula?
Trapezius, levator scapulae, rhomboid major, rhomboid minor
Trapezius actions
Elevates, retracts, and depresses scapula
Innervation of scapula
Accessory nerve (CN XI)
Is levator scapula deep or superficial to trapezius
Deep
Actions of levator scapula
Elevates scapula
Innervation of levator scapula
Dorsal scapular nerve
Is rhomboid minor above or below spine of scapula
Above
Action of rhomboid minor
Retracts scapula
Innervation of rhomboid minor
Dorsal scapular n.