Muscles producing movement at the elbow

Biceps brachii

O: Long head: Supraglenoid tubercle of scapula
O: Short head: Coracoid process of scapula
I: Tuberosity of the radius and aponeurosis of the biceps brachii
N: Musculocutaneous C5-C6
A: Flex the elbow, supinate the forearm, flex the shoulder

Brachialis

O: Distal half of anterior surface of humerus
I: Tuberosity and coronoid process of ulna
Parallel
N: Musculocutaneous C5-C6
A: Flex the elbow

Brachioradialis

O: Proximal 2/3 of the lateral supracondylar ridge of humerus
I: Styloid process of radius
Fusiform
N: Radial C5-C6
A: Flex the elbow

Triceps brachii

O: Long head: Infraglenoid tubercle of the scapula
O: Lateral head: Posterior surface of proximal half of the humerus
O: Medial head: Posterior surface of distal half of the humerus
I: Olecranon process of the ulna
N: Radial C6-C8
A: All heads extend the elbow
Long head: extend the shoulder, adduct the shoulder

Pronator teres (superficial)

O: Common flexor tendon from the medial epicondyle of the humerus
I: Middle of lateral surface of the radius
N: Median C6-C7
A: Pronate the forearm, assist to flex the elbow

Pronator quadratus (deep)

O: Medial, anterior surface of distal ulna
I: Lateral, anterior surface of distal radius
N: Median C7-C8
A: Pronate the forearm

Extensor digitorum (superficial)

O: Common extensor tendon from the lateral epicondyle of humerus
I: Bases of middle and distal phalanges of 2nd-5th fingers
N: Radial C6-C8
A: Extend the 2nd-5th digits, assist to extend the wrist

Extensor carpi radialis brevis (superficial)

O: Common extensor tendon from the lateral epicondyle of humerus
I: Bases of 3rd metacarpal
N: Radial C6-C8
A: Extend the wrist, abduct the wrist, assist to flex the elbow

Extensor carpi radialis longus (superficial)

O: Distal 1/3 of the lateral superacondylar ridge of humerus
I: Base of 2nd metacarpal
N: Radial C6-C7
A: Extend the wrist, abduct the wrist, assist to flex the elbow

Flexor carpi radialis (superificial)

O: Common flexor tendon from medial epicondyle of humerus
I: Bases of 2nd-3rd metatarsals
N: Median C6-C7
A: Flex the wrist, abduct the wrist, assist to flex the elbow

Flexor carpi ulnaris

O: Humeral head: Common flexor tendon from medial epicondyle of humerus
Ulnar head: Posterior surface of proximal 2/3 of ulna
I: Pisiform, hook of the hamate, and base of 5^th metacarpal
Fusiform/parallel
N: Ulnar C7-T1
A: Flex the wrist, adduct the wrist, assist to flex the elbow

Flexor digitorum superficialis

O: Common flexor tendon from medial epicondyle of humerus
I: Palmar aspects of middle phalanges of 2nd-5th fingers
N: Median C7-T1
A: Flex the 2nd-5th fingers, flex the wrist