Anatomy of Shoulder and Elbow Flashcards
What does the shoulder girdle consist of?
Scapula, clavicle and associated musculature
What are the short scapular (posterior) muscles and what are their functions?
Supraspinatus, infraspinatus, Teres minor and major
Abduction and external rotation of shoulder
What are the short scapular muscles (anterior) and what are their functions?
Subscapularis
Internal rotation of shoulder
What is the muscle that spans posterior surface of humerus and what are its functions?
Triceps brachii
Extends arm and forearm
What is the antagonist to triceps? And where does it attach to and from
Biceps brachii - from scapula to radius this allows flexion and supination of forearm
What are the pronator atagnosist to biceps brachii?
Pronator teres and pronator quadratus
What muscles attach to the clavicle?
Trapezius, Strenohyoid, Pec major, deltoid, subclavian and sternocleidomastoid
What are the other functions of clavicle?
Protect shoulder
Protect brachial plexus
What muscles attach to the greater tuberosity of humerus?
Supraspinatus
Infraspinatus
Teres minor
What muscles attach to the lesser tuberosity of humerus?
Subscapularis
What are the ligaments of the clavicle?
Coraco-acromial
Acromio-clavicular
Coraco-clavicular
What type of joint is the glenohumeral joint?
Synovial ball and socket
What is the labrum and what is its function>
Fibrocartilaginous
Elevates glenoid edge resulting in doubled glenoid depth and increased SA
What are the intrinsic muscles of shoulder (rotator cuff)
Subscapularis
Supraspinatus
Infraspinatus
Teres minor
What muscle cause flexion of shoulder?
Pec major
Coracobrachialis
Biceps
Deltoid (anterior)
