Exam 2 (Elbow and Hand)

Action of the Brachialis

Elbow flexion

Origin of the Brachialis

Distal half of the anterior surface of the humerus

Insertion of the Brachialis

Coronoid process of the ulna and tuberosity.

Nerve that the Brachialis innervates

Musculocutaneous

Action of the Brachioradialis

Elbow flexion (pronation and supination of forearm)

Origin of the Brachioradialis

Lateral supracondylar ridge

Insertion of the Brachioradialis

Radial styloid process

Nerve that the Brachioradialis innervates

Radial Nerve

Action of the Pronator Teres

Pronate Forearm; Flexion of Elbow

Origin of the Pronator Teres

Common Flexor Tendon (Medial Epicondyle)

Insertion of the Pronator Teres

Lateral Surface of the radius

Nerve that the pronator teres innervates

Median Nerve

Action of the Pronator Quadratus

Pronation of the forearm

Origin of the Pronator Quadratus

Medial anterior surface of distal ulna

Insertion of the Pronator Quadratus

Lateral anterior, distal radius

Nerve that the Pronator Quadratus innervates

Median Nerve

Action of the Supinator

Supination of forearm; Elbow flexion

Origin of the Supinator

Lateral Epicondyle

Insertion of the Supinator

Lateral, Anterior, proximal radius

Nerve that the supinator innervates

Radial Nerve

Action of the Extensor Carpi Radialis Longus

Extension and abduction of wrist; elbow extension

Origin of the Extensor Carpi Radialis Longus

Lateral Supracondyle ridge

Insertion of the Extensor Carpi Radialis Longus

Dorsal bas of 2nd metacarpal

Nerve that the Extensor Carpi Radialis Longus Innervates

Radial Nerve

Action of the Extensor Carpi Radialis Brevis

Extension and abduction of the wrist

Origin of the Extensor Carpi Radialis Brevis

Common extensor tendon

Insertion of the Extensor Carpi Radialis Brevis

Dorsal base of 3rd metacarpal

Nerve that the Extensor Carpi Radialis Brevis innervates

Radial Nerve

Action of the Extensor Carpi Ulnaris

Extension and adduction of wrist

Origin of the Extensor Carpi Ulnaris

Common extensor tendon and dorsal surface of ulna

Insertion of the Extensor Carpi Ulnaris

Base of 5th metacarpal

Nerve that the Extensor Carpi Ulnaris innervates

Deep Radial Nerve

Action of the Extensor Digitorum

Extension of wrist; Extension and abduction of 2-5 digits

Origin of the Extensor Digitorum

Common extensor tendon

Insertion of the Extensor Digitorum

Bases of middle and distal phalanges of 2-5 fingers

Nerve that the Extensor Digitorum innervates

Deep Radial Nerve

Action of the Flexor Carpi Radialis

Wrist flexion; Flexion and adduction of hand

Origin of the Flexor Carpi Radialis

Common flexor tendon; medial epicondyle of humerus

Insertion of the Flexor Carpi Radialis

Base of 2nd and 3rd metacarpal

Nerve that the Flexor Carpi Radialis innervates

Median Nerve

Action of the Palmaris Longus

Flexion of the wrist

Origin of the Palmaris Longus

Common flexor tendon

Insertion of the Palmaris Longus

Flexor retinaculum

Nerve that the palmaris longus innervates

Median Nerve

Action of Flexor Carpi Ulnaris

Flexion of the wrist

Origin of Flexor Carpi Ulnaris

Common flexor tendon; Olecranon

Insertion of Flexor Carpi Ulnaris

Pisiform; hamate and base of 5th metacarpal

Nerve that the Flexor Carpi Ulnaris innervates

Ulnar nerve

Action of Flexor Digitorum Superficialis

Flexion of the wrist; Flexion of the middle and proximal phalanges 2-5

Origin of Flexor Digitorum Superficialis

Common flexor tendon; Coronoid process

Insertion of Flexor Digitorum Superficialis

Middle phalanges of digits 2-5

Nerve that the Flexor Digitorum Superficialis innervates

Median Nerve

Action of Flexor Digitorum Profundus

Flexion of 2-5 fingers [ MCP,PIP,DIP]

Origin of Flexor Digitorum Profundus

Proximal ulna and anterior, and medial

Insertion of Flexor Digitorum Profundus

Base of palmar surface of distal phalanges 2-5

Nerve that the Flexor Digitorum Profundus innervates

Median Nerve

Action of Anconeus

Elbow Extension

Origin of Anconeus

Lateral epicondyle

Insertion of Anconeus

Olecronon process and posterior, proximal ulna

Nerve that the Anconeus innervates

Radial Nerve

Action of Extensor Indicis

Extension and adduction of the second finger

Origin of Extensor Indicis

Posterior surface of the distal shaft ulna and interosseous membrane

Insertion of Extensor Indicis

Tendon of the extensor digitorum at the level of the 2nd metacarpal

Nerve that the Extensor Indicis innervates

Radial Nerve

Action of Abductor Pollicis Longus

Origin of Abductor Pollicis Longus

Insertion of Abductor Pollicis Longus

Nerves that the Abductor Pollicis Longus innervates

Action of Extensor Pollicis Longus

Origin of Extensor Pollicis Longus

Insertion of Extensor Pollicis Longus

Nerve that the Extensor Pollicis Longus innervates

Action of Extensor Pollicis Brevis

Origin of Extensor Pollicis Brevis

Insertion of Extensor Pollicis Brevis

Nerves that the Extensor Pollicis Brevis innervates

Action of the Flexor Pollicis Longus

Origin of the Flexor Pollicis Longus

Insertion of the Flexor Pollicis Longus

Nerves that the Flexor Pollicis Longus innervates

Action of the Abductor Pollicis Brevis

Origin of the Abductor Pollicis Brevis

Insertion of the Abductor Pollicis Brevis

Nerves that the abductor pollicis brevis innervates

Action of the Flexor Pollicis Brevis

Origin of the Flexor Pollicis Brevis

Insertion of the Flexor Pollicis Brevis

Nerves that the flexor pollics brevis

Action of the Opponens pollicis

Origin of the Opponens pollicis

Insertion of the Opponens pollicis

Nerves that the opponens pollicis innervates

Action of the adductor pollicis

Origin of the adductor pollicis

Insertion of the adductor pollicis

Nerves that the adductor pollicis innervates

Action of the lumbricals of the hand

Origin of the lumbricals of the hand

Insertion of the lumbricals of the hand

Nerves that the lumbricals of the hand innervate