Shoulder Muscles and function Flashcards
Serratus Anterior
Joint it crosses:
Actions:
Scapula (Shoulder girdle)
Protraction and Upward Rotation
Pectoralis Minor
Joint it crosses:
Actions:
scapula (shoulder girdle)
depression, downward rotation, protraction, anterior tipping
Upper Trapezius
Joint it crosses:
Actions:
scapula
elevation and upward rotation
Middle Trapezius
Joint it crosses:
Actions:
scapula
retraction
Lower Trapezius
Joint it crosses:
Actions:
scapula
depression and upward rotation
(think pinwheel!)
Levator Scapulae
Joint it crosses:
Actions:
scapula
elevation and downward rotation
(think pinwheel!)
Rhomboids
Joint it crosses:
Actions:
scapula
retraction, downward rotation, elevation
Anterior Deltoid
Joint it crosses:
Actions:
shoulder (glenohumeral joint)
flexion, horizontal adduction, internal rotation
Middle Deltoid
Joint it crosses:
Actions:
shoulder (glenohumeral joint)
abduction
Posterior Deltoid
Joint it crosses:
Actions:
shoulder (glenohumeral joint)
extension, horizontal abduction, external rotation
Supraspinatus
Joint it crosses:
Actions:
shoulder (glenohumeral joint)
abduction
Infraspinatus
Joint it crosses:
Actions:
shoulder (glenohumeral joint)
external rotation
Teres Minor
Joint it crosses:
Actions:
shoulder
external rotation
Subscapularis
Joint it crosses:
Actions:
shoulder (glenohumeral joint)
internal rotation
Pectoralis Major (Sternal head) Joint it crosses: Actions:
Shoulder
Internal rotation, horizontal adduction
sternal = assists with adduction