Muscle Action Flashcards
What action does upper and lower trap perform?
Upward rotation(both)
Depression (lower trap)
Elevation (upper trap)
What nerve is innervated by Serratus anterior?
Long thoracic nerve
What nerve is associated with upper and lower trap?
CN XI
What action does Serratus anterior perform?
Upward rotation and protraction
What does the rhomboids perform?
Downward rotation and retraction
What action does Levator scapulae perform?
Downward rotation
What action does Pectoralis minor perform?
Downward rotation and scapular tilt
What are the rotator cuff muscles?
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
What action does Supraspinatus perform?
Abduction
What action does Infraspinatus perform?
External rotation
What action does Teres minor perform?
External rotation
What action does Subscapularis perform?
Internal rotation
What muscle does shoulder flexion perform?
Anterior deltoid
What muscle does shoulder extension perform?
Posterior deltoid
Latissimus dorsi
What muscle does shoulder abduction perform?
Middle deltoid
Posterior deltoid
Supraspinatus