Muscles That Move the Wrist Joint, Hand, and Fingers

Vocabulary flashcards covering origin, insertion, action, layer, and anatomical structures for anterior and posterior forearm muscles.

Pronator Teres — Origin

Medial epicondyle of the humerus

Pronator Teres — Insertion

lateral surface of the radius

Pronator Teres — Action

pronates forearm

Flexor Carpi Radialis — Origin

Medial epicondyle of the humerus

Flexor Carpi Radialis — Insertion

metacarpals II and III.

Flexor Carpi Radialis — Action

Flexes wrist and abducts the hand.

Palmaris Longus — Origin

Medial epicondyle of the humerus

Palmaris Longus — Insertion

Flexor retinaculum and palmar aponeurosis.

Palmaris Longus — Action

flexes wrist

Flexor Carpi Ulnaris — Origin

Medial epicondyle of the humerus

Flexor Carpi Ulnaris — Insertion

carpals and metacarpal V.

Flexor Carpi Ulnaris — Action

Flexes wrist and and adducts hand

Flexor Digitorum Superficialis — Origin

Medial epicondyle of the humerus,

Flexor Digitorum Superficialis — Insertion

middle phalanges II-V.

Flexor Digitorum Superficialis — Action

Flexes digits 2–5 (MP-PIP joints)

Flexor Digitorum Profundus — Origin

ulna

Flexor Digitorum Profundus — Insertion

distal phalanges II-V

Flexor Digitorum Profundus — Action

Flexes digits 2–5 (MP,PIP,DIP joints)

Flexor Pollicis Longus — Origin

radius

Flexor Pollicis Longus — Insertion

distal phalanx of thumb

Flexor Pollicis Longus — Action

Flexes thumb (MP joint)

Extensor Carpi Radialis Longus — Origin

Lateral supracondylar ridge of the humerus.

Extensor Carpi Radialis Longus — Insertion

metacarpal II.

Extensor Carpi Radialis Longus — Action

Extends wrist and abducts hand

Extensor Carpi Radialis Brevis — Origin

Lateral epicondyle of the humerus

Extensor Carpi Radialis Brevis — Insertion

metacarpal III.

Extensor Carpi Radialis Brevis — Action

Extends wrist and abducts hand

Extensor Digitorum Communis — Origin

Lateral epicondyle of the humerus

Extensor Digitorum Communis — Insertion

middle and distal phalanges II-V.

Extensor Digitorum Communis — Action

Extends digits 2–5 (MP, PIP, DIP joints)

Extensor Digiti Minimi — Origin

Lateral epicondyle of the humerus

Extensor Digiti Minimi — Insertion

proximal phalanx of digit V

Extensor Digiti Minimi — Action

Extends digit 5 (MP, PIP joints)

Extensor Carpi Ulnaris — Origin

Lateral epicondyle of the humerus

Extensor Carpi Ulnaris — Insertion

metacarpal V.

Extensor Carpi Ulnaris — Action

Extends wrist and adducts the hand

Extensor Indicis — Origin

Posterior ulna

Extensor Indicis — Insertion

tendon of extensor digitorum communis

Extensor Indicis — Action

Extends digit 2 (MP, PIP, DIP joints)

Abductor Pollicis Longus — Origin

radius and ulna

Abductor Pollicis Longus — Insertion

metacarpal I

Abductor Pollicis Longus — Action

Abducts thumb

Extensor Pollicis Brevis — Origin

radius

Extensor Pollicis Brevis — Insertion

proximal phalanx of thumb

Extensor Pollicis Brevis — Action

Extends thumb (MP joint)

Extensor Pollicis Longus — Origin

ulna

Extensor Pollicis Longus — Insertion

distal phalanx of thumb

Extensor Pollicis Longus — Action

Extends the thumb (MP and IP joints)