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Gross Anatomy
Muscles of the Arm
20
Anatomy
Graduate
11/27/2009

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Cards

Term
Biceps Brachii Origin
Definition
Long Head-supraglenoid tubercle of humerus

Short Head-coracoid process
Term
Biceps Brachii Insertion
Definition
Radial tuberosity and bicipital aponeurosis
Term
Biceps Brachii Innervation
Definition
Musculocutaneous Nerve
Term
Biceps Brachii Action
Definition
Supinates forearm and, when it is supine flexes forearm.
Term
Brachialis Origin
Definition
Distal 1/2 of anterior surface of humerus
Term
Brachialis Insertion
Definition
Coronoid process and tuberosity of ulna
Term
Brachialis Innervation
Definition
Musculocutaneous nerve
Term
Brachialis Action
Definition
Flexes forearm
Term
Coracobrachialis Origin
Definition
Coracoid process of scapula
Term
Coracobrachialis Insertion
Definition
Medial 1/3 of humerus
Term
Coracobrachialis Innervation
Definition
Musculocutaneous nerve
Term
Coracobrachialis Action
Definition
Flexes and adducts arm
Term
Triceps Brachii Origin
Definition
Long head-infraglenoid tubercle of humerus
Medial head- posterior humerus, inferior to radial groove
Lateral Head-posterior humerus, superior to radial groove
Term
Triceps Brachii Insertion
Definition
Proximal end of olecranon, ulna, and fascia of forearm
Term
Triceps Brachii Innervation
Definition
Radial Nerve
Term
Triceps Brachii Action
Definition
Extends forearm and the long head steadies head of abducted humerus
Term
Anconeus Origin
Definition
lateral epicondyle of humerus
Term
Anconeus Insertion
Definition
Lateral surface of olecranon and posterior ulna
Term
Anconeus Innervation
Definition
Radial Nerve
Term
Anconeus Action
Definition
Assists triceps in extending forearm, stabilizes elbow joint, abducts ulna during pronation
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