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Muscles of the Elbow
Orgins Insertions and Actions of the Elbow Muscles
22
Anatomy
Undergraduate 1
05/13/2010

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Term
Triceps Brachii Origin
Definition
Long Head: infraglenoid tubercle of scapula
Lateral head: proximal 1/2 of posterior humerus
Medial head: distal 2/3 of posterior humerus
Term
Triceps Brachii Insertion
Definition
Olecranon process of ulna
Term
Triceps Brachii Action
Definition
Extension of the forearm
Extend, adduct the arm
Term
Anconeus Origin
Definition
Lateral epicondyle of humerus
Term
Anconeus Insertion
Definition
Olecranon process of ulna; lateral ulnar shaft
Term
Anconeus Action
Definition
Extension of the forearm
Term
Biceps Brachii Origin
Definition
Long Head: Supraglenoid tubercle of scapula
Short Head: Coracoid process of scapula
Term
Biceps Brachii Insertion
Definition
Radial tuberosity; bicipital aponeurosis
Term
Biceps Brachii Action
Definition
Flexion of forearm
Supination of forearm
Flexion of arm (long head)
Term
Brachialis Orgin
Definition
Distal 1/2 of anterior humerus
Term
Brachialis Insertion
Definition
Coronoid process of ulna
Term
Brachialis Action
Definition
Flexion of forearm
Term
Brachioradialis Origin
Definition
Lateral supracondylar ridge of humerus
Term
Supinator Origin
Definition
Lateral eipicondyle of humerus; supinartor crest of ulna; radial collateral and annular ligaments
Term
Supinator Insertion
Definition
Proximal 1/3 of lateral radius
Term
Supinator Action
Definition
Supination of forearm
Term
Pronator Tres Origin
Definition
Medial epicondyle of humerus; coronoid process of ulna
Term
Pronator Tres Insertion
Definition
Middle lateral radius
Term
Pronator Tres Action
Definition
Pronation of forearm
Flexion of forearm
Term
Pronator Quadratus Origin
Definition
Anterior distal ulna
Term
Pronator Quadratus Insertion
Definition
Anterior distal radius
Term
Pronator Quadratus Action
Definition
Pronation of the forearm
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