Trapezius function
upward rotation (lower)
Latissium Dorsi function
internal rotation, shoulder extension, some adduction
Levator scapulae function
downward rotation
Rhomboid function
adduction or retration, downward rotation
Anterior Deltoid function
anterior: flexion and some abduction, horizontal abduction, internal rotation
Posterior Deltoid function
posterior: horizontal abduction, extension, external rotation
Middle Deltoid function
middle: major abductor of shoulder joint
Teres Major function
internal rotation, adduction, extension
Supraspinous function:
stabilize, pull head of humerus towards glenoid fossa & allows for some slight abduction
Infraspinatus function:
external rotation, assist with abduction (pulling head of the joint up)
Teres Minor function
external rotation, adduction
Subscapularis function
internal rotation, adduction, horizontal adduction
Pectoralis Major function
downward rotation, protraction; adduction and internal rotation
Pectoralis Minor function
- protraction scapula
- depress scapula
Subclavius function
depression of clavicle
Serratus anterior function
protraction
What are the upward rotators of the scapula?
- serratus anterior
- upper trapezius
What are the downward rotators of the scapula?
- pec minor
- rhomboids
- levator scapulae
What are the elevators of the scapula?
-traps
levator scapulae
What are the depressors of the scapula?
- pec minor
- Lats
What are the protractors of the scapula?
Pec minor
serratus anterior
What are the retractors of the scapula?
middle traps
rhomboids
