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32 Cards in this Set
- Front
- Back
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What joint in the upper limb is not a true joint? What is it really?
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the scapulothoracic joint -- really just a fascial plane
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What muscles does the retraction of the scapula?
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trapezius, rhomboid minor, rhomboid major
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What muscles does the protraction of the scapula?
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Serratus Anterior
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What muscles does the elevation of the scapula?
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Levator Scapulae, Trapezius
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What does depression of the scapula?
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Pectoralis minor, Trapezius
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What does inferior rotation of the scapula?
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rhomboids, gravity, and arm adductors (latissimis dorsi, teres major, pectorals major)
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What does superior rotation of the scapula?
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trapezius and serratus anterior
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When is rotation of the scapula important?
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when you abduct the arm about the shoulder
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What are the ligaments on the sternoclavicular joint?
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Anterior sternoclaviuclar ligament, posterior sternoclavicuar ligament, interclavicuar igament, costoclavicular ligament
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Between what 2 bones is the only true articulation with the upper limb and the trunk?
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Between the proximal end of the clavical and the manubrium of the sternum (the sternoclavicular joint
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What movements does the sternoclavicular joint limit/
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rotation, elevation, depression, protraction, and retraction
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What is the purpose of the articular disk?
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divides the joint cavity into 2 separate synovial lined cavities due to the bones not really connecting well - increases mobility and acts as shock absorbers
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What joint is commonly dislocated in a "shoulder separation?"
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The AC joint - acromioclavicular joint
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What are the 2 ligaments in the coracoclavicular ligament?
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Trapezoid ligament (lateral)and the conoid ligament (medial)
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What ligament is part of the joint capsule in the acromioclavicular ligament?
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the acromioclavicular ligament
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What movements does the AC joint stabilize?
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stabilizes movement during superior and inferior rotation of the scapula
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What bones are in the acromioclavicular joint?
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the distal diarthrodial articulation of clavical with acromion process of scapula
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Name all the joints in the shoulder
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1. sternoclavicular joint
2. arcromioclavicular 3. glenohumeral joint |
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What is the most movable and least stable joints in the upper limb?
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The glenohumeral joint
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Where are the glenohumeral ligaments located?
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In the joint capsule of the glenohumeral ligaments
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What muscle passes through the joint cavity of the glenohumeral ligament? Why?
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long head of the biceps brachii -- to stabilize the joint by not allowing the head of the humerus to be displaced superiorly
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Name the rotator cuff muscles
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1. Supraspinatus
2. Infraspinatus 3. Teres minor 4. subscapularis |
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What portion of the glendohumeral going lacks a lot of reinforcement and is most likely place for a dislocation to occur?
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The inferior end of the joint capsule
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What are the bursa and why are they associated with the glenohumeral joint?
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bursa- synovial lined sacs
allow movement of the muscles and tendons over the joint |
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What are extensions of the synovial joint called?
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bursa
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What does abduction of the glenohumeral joint?
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Deltoid, supraspinatus(initiation) , trapezius (rototes glenoid fossa superiorly)
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What dose lateral rotation of the glenohumeral joint?
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infraspinatus, teres minor, deltoid
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What does flexion of the glenohumeral joint?
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Deltoid, coracobrachialis, biceps brachii, pectorlis major
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What does extension of of the glenohumeral joint?
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Latissimus dorsi, teres major, deltoid, long head of the tricep brachii
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What is the function of the glenoid labrum?
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its a cartilagenous ring surrounding the glenoid fossa and deepens the fossa -stabilizing the joint
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What does adduction at the glenohumeral joint?
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Latissimus dorsi
Pectoralis Major Teres Major |
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What does Medial roational at the glenohumeral joint?
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Subscapularis
Latissimus dorsi Pectoralis Major Teres Major |
