Anterior arm muscles Flashcards
Biceps brachii origin
Short head: coracoid process of scapula
Long head: Supraglenoid tubercle
Biceps brachii insertion
Radial tuberosity and fascia of forearm via bicipital aponeurosis
Biceps brachii nerve
musculocutaneous
Biceps brachii B.S.
Brachial artery
Biceps brachii action
Flexion of forearm (when supinated), supination of the forearm
Brachialis origin
Distal half of anterior surface of humerus
Brachialis insertion
Coronoid process and ulnar tuberosity
Brachialis nerve
Musculocutaneous
Brachialis b.s.
Radial recurrent artery
Brachialis action
Flexion of forearm
Coracobrachialis origin
Coracoid process
Coracobrachialis insertion
Anteromedial surface of middle of humerus
Coracobrachialis nerve
Musculocutaneous
Coracobrachialis action
Flexion and adduction at g-h joint
Triceps brachii origin
Long head: infraglenoid tubercle
Lateral head: Posterior surface of humerus, superiolateral to radial groove
Medial: Posterior surface of the humerus, inferiolateral to radial groove
Triceps brachii insertion
Proximal end of olecranon
Triceps brachii nerve
Radial
Triceps brachii action
Extension of forearm at elbow
Long - extension and adduction of arm at g-h joint
Anconeus origin
lateral epicondyle
Anconeus insertion
Lateral side of olecranon and adjacent ulna
Anconeus nerve
Radial
Anconeus action
Extension of forearm at forearm at elbow, stabilizes joint against flexion and supination/pronation
