Actions
What is the action of the Levator Scapula?
elevation of the shoulder girdle
On what bone is found the coracoid process?
Scapula
What is the name of the large, triangular, wing-like bone in the upper posterior portion of the trunk?
Scapula
What is the movement of the scapula during abduction?
upward rotation and lateral tilt
What is the action of the Subscapularis?
internal rotation and flexion
The biceps brachii muscle inserts where?
tuberosity of the radius or radial tuberosity
What is the action of the supraspinatus?
Shoulder joint abduction
What is the action of the Latissimus Dorsi?
internal rotation, extension and adduction of the shoulder joint
Where is the deltoid tuberosity located?
halfway down the shaft of the humerus on the lateral surface
At what point (in degrees) does the scapula begin to rotate to facilitate full abduction of the shoulder?
180
List the muscles of the Rotator Cuff
Subscapularis, supraspinatus, infraspinatus, teres minor
Subscapularis, supraspinatus, infraspinatus, teres minor are all muscles part of what?
rotator cuff
What is the action of the pectoralis major?
flexion, adduction, and internal rotation of the shoulder joint
Where is the glenoid fossa located on the scapula?
on the lateral angle of the scapula
Which muscle initiates abduction?
supraspinatus
The intertubercular groove is located between what of the humerus?
greater tuberosity and lesser tuberosity
What are the actions of the three portions of the deltoid? (Anterior, middle, posterior)
anterior- adduction, flexion, internal roation
middle- abduction
posterior- adduction, extension, external rotation
Where is the Acromion process of the scapula?
the superior lateral portion of the scapula
What structure lies between the greater tuberosity and the lesser tuberosity of the humerus?
intertubercular groove
What is the primary action of the rhomboids?
elevation and adduction of the shoulder girdle
What is located halfway down the shaft of the humerus on its lateral surface?
deltoid tuberosity