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Shoulder / Shoulder Girdle Anatomy
Ligaments and Other Sturctures
Muscles of the Shoulder Joint
Misc. Shoulder
Shoulder Motions
100
The shoulder joint is this type of joint
What is ball and socket.
100
The tendinous band formed by the blending together of the tendinous insertions of the subscapularis, supraspinatus, infraspinatus, and teres minor muscles.
What is the rotator cuff
100
Attaches on the outer third of the clavicle and runs down and out to the deltoid tuberosity, which is located o the lateral aspect of the humerus near the midpoint. It is effictive in abduction, flexion, medial rotation, horizontal adduction
What is anterior deltiod muscle
100
The only way that complete range of shoulder abduction can be achieved is through __________ __________.
What is lateral rotation
100
Anterior deltiod and Pectoralis major contribute to this motion
What is flexion
200
Articulations of the shoulder.
What are sternum, clavicle, humerus, and scapula
200
A thin walled, spacious container that attaches around the rim of the glenoid fossa of the scapula and the anatomical neck of the humerus.
What is the joint capsule.
200
Rotator cuff consists of these.
What are supraspinatus, infraspinatus, teres minor, and subscapularis muscles
200
The articular surface of the ___________ is greater than that of the _____________.
What is humeral head and glenoid fossa.
200
Shoulder extension is the primary function of ________ and ________ muscles.
What is Latissimusdorsi and posterior deltoid
300
Synovial joints of the shoulder.
What are acromioclavicular, sternoclavicular, and glenohumeral
300
A fibrocartilaginous ring attached to the rim of the glenoid fossa, which deepens the articular cavity.
What is the glenoid labrum.
300
Attaches on the lateral side of the acromion process ad runs directly down to the deltiod tuberosity. It is most effective in abducting the shoulder joint.
What is middle deltoid muscle
300
These run under the acromial arch
What are tendons of the rotator cuff muscles
300
Shoulder abduction is the function of ___________ and ________ muscles.
What is Supraspinatus and middle deltiod
400
A shallow, somewhat egg-shaped socket on the superior end, lateral side of scapula; articulates with the humerus.
What is glenoid fossa
400
These reinforce the anterior portion of the capsule in pleated folds.
What are glenohumeral ligaments
400
Attaches to spine of the scapula and runs obliquely down to the deltoid tuberosity. It facilitates abduction, extension, hyperextension, lateral rotation, and horizontal abduction.
What is posterior deltoid
400
After the first 30 degrees of glenohumeral flexion or abduction, the humerus moves 2 degrees for every 1 degree of scapular movement.
What is scupulohumeral rhythm
400
Horizontal adduction is the primary action of _________ and __________ muscles.
What is Pectoralis major and anterior deltoid.
500
Broad, flat area on the superior lateral aspect of scapula, providing attachment for the middle deltoid muscle.
What is Acromion Process.
500
This attaches from the lateral side of the coracoid process and spans the joint anteriorly to the medial side of the greater tubercle. It strengthens the upper part of the joint capsule.
What is coracohumeral ligament
500
These hold the head of humerus against the glenoid fossa.
What are the rotator cuff muscles (supraspinatus, infraspinatus, teres minor, and subscapularis.)
500
With upward rotation of the scapula, the origin of the deltiod muscle moves away from the insertion on the humerus. This motion lengthens the muscle, restoring its contractile potential throughout its entire range of abduction.
What is the inchworm effect
500
Latissimus Dorsi, Teres Major, Subscapularis, Pectoralis Major, and Anterior Deltiod are the primary contributors in this shoulder motion.
What is internal rotation