Bones
Joints
Muscles
Other Structures
Motions
100
Shoulder blade
Scapula
100
Breastbone and collarbone, near center of chest
Sternoclavicular joint
100
Muscle on anterior upper arm, has 2 heads, helps with elbow flexion (curls) and shoulder flexion
Biceps
100
Thick rubbery tissue on the ends of the bones
Articular cartilage
100
Raising the arm up in front of the body
Flexion (Biceps muscle group)
200
Upper arm bone
Humerus
200
Collarbone and shoulder blade, lateral shoulder area
Acromioclavicular joint
200
Group of 4 muscles that provide dynamic stability to glenohumeral joint
Rotator Cuff Muscles
200
Fluid-filled sac that cushions and lubricates the joint
Bursa
200
Raising the arm out to the side, away from the midline
Abduction (Deltoid muscle)
300
"Socket" of the shoulder joint
Glenoid
300
Upper arm bone and scapula, most important articulation in shoulder region
Glenohumeral joint
300
Rotator cuff muscle: "Superior to the Spine of the scapula"
Supraspinatus
300
Rim of cartilage around edge of glenoid, deepens cup to hold humeral head in place
Glenoid Labrum
300
Rotating the humerus laterally
External Rotation (Supraspinatus, Infraspinatus, Teres Minor)
400
Narrow ridge on the back of the shoulder blade
Spine of the Scapula
400
Shoulder blade sits on ribcage and is held in place by:
Muscles
400
Rotator cuff muscle: "Inferior to the Spine of the Scapula"
Infraspinatus
400
Sports related analogy for structure of glenohumeral joint: humeral head : glenoid :: ____ ball : _____ ___
Golf ball:golf tee
400
Rotating the humerus medially
Internal Rotation (Subscapularis)
500
Top of the shoulder region, part of the scapula
Acromion
500
The more MOBILITY a joint has, the less ___________
STABILITY (glenohumeral joint is very mobile, and very unstable)
500
Rotator cuff muscle: "Under the Scapula"
Subscapularis
500
The efficient movement of the shoulder blade during humeral abduction is called:
Scapulohumeral Rhythm
500
Pulling the arm backwards
Extension (Triceps muscle group)
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