Lab 4 - Forearm Musculature

Forearm Flexors Blue: Pronator Teres Yellow: Flexor Carpi Radialis Green: Palmaris Longus Red: Flexor Carpi Ulnaris

Forearm Flexors

Blue: Pronator Teres

Yellow: Flexor Carpi Radialis

Green: Palmaris Longus

Red: Flexor Carpi Ulnaris

Flexor Carpi Ulnaris O - Medial epicondyle of humerus I - Pisiform, hook of hamate and base of 5th metacarpal, passes under flexor retinaculum F - Elbow flexion, wrist flexion and adduction

Flexor Carpi Ulnaris

O - Medial epicondyle of humerus

I - Pisiform, hook of hamate and base of 5th metacarpal, passes under flexor retinaculum

F - Elbow flexion, wrist flexion and adduction

Palmaris Longus O - Medial epicondyle of humerus I - Palmar aponeurosis and flexor retinaculum F - Elbow flexion, wrist flexion

Palmaris Longus

O - Medial epicondyle of humerus

I - Palmar aponeurosis and flexor retinaculum

F - Elbow flexion, wrist flexion

Flexor Carpi Radialis O - Medial epicondyle of humerus I - 2nd and 3rd metacarpals, passes under flexor retinaculum F - Elbow flexion, wrist flexion and abduction

Flexor Carpi Radialis

O - Medial epicondyle of humerus

I - 2nd and 3rd metacarpals, passes under flexor retinaculum

F - Elbow flexion, wrist flexion and abduction

Pronator Teres O - Medial epicondyle of humerus and coranoid process of ulna I - Midlateral surface of radius   F - Pronation of forearm and assists with elbow flexion

Pronator Teres

O - Medial epicondyle of humerus and coranoid process of ulna

I - Midlateral surface of radius  

F - Pronation of forearm and assists with elbow flexion

Forearm Extensors Yellow: Extensor Carpi Radialis Longus Blue: Extensor Carpi Radialis Brevis Green: Extensor Digitorum Red:  Extensor Digitorum Lateralis Purple: Extensor Carpi Ulnaris

Forearm Extensors

Yellow: Extensor Carpi Radialis Longus

Blue: Extensor Carpi Radialis Brevis

Green: Extensor Digitorum

Red:  Extensor Digitorum Lateralis

Purple: Extensor Carpi Ulnaris

Extensor Carpi Ulnaris O - Lateral epicondyle of humerus I - Base of 5th metacarpal F - Wrist extension and adduction

Extensor Carpi Ulnaris

O - Lateral epicondyle of humerus

I - Base of 5th metacarpal

F - Wrist extension and adduction

Extensor Digitorum Lateralis - Not in Humans

Extensor Digitorum Lateralis - Not in Humans

Extensor Digitorum O - Lateral epicondyle of humerus I - Distal and middle phalanges of each finger F - Wrist extension, metacarpal and interphalangeal extension

Extensor Digitorum

O - Lateral epicondyle of humerus

I - Distal and middle phalanges of each finger

F - Wrist extension, metacarpal and interphalangeal extension

Extensor Carpi Radialis Longus and Brevis Blue: Brevis O - Lateral epicondyle of humerus I - Base of 3rd metacarpal F - Wrist extension and abduction Yellow: Longus O - Above lateral epicondyle of humerus I - Base of 2nd metacarpal F - Wrist extension and abduction

Extensor Carpi Radialis Longus and Brevis

Blue: Brevis

O - Lateral epicondyle of humerus

I - Base of 3rd metacarpal

F - Wrist extension and abduction

Yellow: Longus

O - Above lateral epicondyle of humerus

I - Base of 2nd metacarpal

F - Wrist extension and abduction