Antebrachial Muscle OIA (copy)

Brachioradialis Origin

proximal part of lateral supracondylar ridge of humerus

Brachioradialis Insertion

styloid process of radius

Brachioradialis Action

flexes elbow

Extensor Carpi Radialis Longus Origin

distal part of lateral supracondyle ridge of humerus

Extensor Carpi Radialis Longus Insertion

base of 2nd metacarpal

Extensor Carpi Radialis Longus Action

extends wrist; abducts wrist

Extensor Carpi Radialis Brevis Origin

lateral epicondyle of humerus

Extensor Carpi Radialis Brevis Insertion

base of 2nd and 3rd metacarpal

Extensor Carpi Radialis Brevis Action

extends wrist; abducts wrist

Extensor Carpi Ulnaris Origin

lateral epicondyle of humerus; posterior border of ulna

Extensor Carpi Ulnaris Insertion

base of 5th metacarpal

Extensor Carpi Ulnaris Action

extends wrist; adducts wrist

Extensor Digiti Minimi Origin

lateral epicondyle of humerus

Extensor Digiti Minimi Insertion

extensor expansion of 5th digit

Extensor Digiti Minimi Action

extends 5th digit

Extensor Digitorum Origin

lateral epicondyle of humerus

Extensor Digitorum Insertion

extensor expansions of digits 2-5

Extensor Digitorum Action

extends digits 2-5; extends wrist

Abductor Pollicis Longus Origin

proximal posterior surface of ulna and radius; interosseous membrane

Abductor Pollicis Longus Insertion

base of 1st metacarpal

Abductor Pollicis Longus Action

abducts thumb; extends thumb

Extensor Pollicis Longus Origin

middle posterior surface of ulna; interosseous membrane

Extensor Pollicis Longus Insertion

dorsal base of distal phalanx of thumb

Extensor Pollicis Longus Action

extends distal phalanx of thumb

Extensor Indicis Origin

distal posterior surface of ulna; interosseous membrane

Extensor Indicis Insertion

extensor expansion of 2nd digit

Extensor Indicis Action

extends 2nd digit; extends wrist

Extensor Pollicis Brevis Origin

distal posterior surface of radius; interosseous membrane

Extensor Pollicis Brevis Insertion

dorsal base of proximal phalanx of thumb

Extensor Pollicis Brevis Action

extends proximal phalanx of thumb

Supinator Origin

lateral epicondyle of humerus; supinator fossa of ulna; supinator crest of ulna

Supinator Insertion

proximal lateral, posterior and anterior surfaces of radius

Supinator Action

supinates elbow

Flexor Carpi Radialis Origin

medial epicondyle of humerus

Flexor Carpi Radialis Insertion

anterior base of 2nd metacarpal

Flexor Carpi Radialis Action

flexes wrist; abducts wrist

Pronator Teres Origin

medial epicondyle of humerus; coronoid process of ulna

Pronator Teres Insertion

middle lateral radius

Pronator Teres Action

pronates elbow, flexes elbow

Palmaris Longus Origin

medial epicondyle of humerus

Palmaris Longus Insertion

distal flexor retinaculum; palmar aponeurosis

Palmaris Longus Action

flexes wrist

Flexor Digitorum Superficialis Origin

medial epicondyle of humerus; coronoid process of ulna; anterior surface of the proximal radius

Flexor Digitorum Superficialis Insertion

bodies of middle phalanges of digits 2-5

Flexor Digitorum Superficialis Action

flexes middle and proximal phalanges of digits 2-5; flexes wrist

Flexor Carpi Ulnaris Origin

medial epicondyle of humerus; olecrannon process; posterior ulna

Flexor Carpi Ulnaris Insertion

pisiform bone; hook of hamate; base of 5th metacarpal

Flexor Carpi Ulnaris Action

flexes wrist; adducts wrist

Flexor Pollicis Longus Origin

middle anterior surface of radius; interosseous membrane

Flexor Pollicis Longus Insertion

palmar base of distal phalanx of thumb

Flexor Pollicis Longus Action

flexes thumb

Flexor Digitorum Profundus Origin

proximal medial and anterior surface of ulna; interosseous membrane

Flexor Digitorum Profundus Insertion

palmar base of digital phalanges of digits 2-5

Flexor Digitorum Profundus Action

flexes distal phalanges 2-5; flexes wrist

Pronator Quadratus Origin

distal anterior ulna

Pronator Quadratus Insertion

distal anterior radius

Pronator Quadratus Action

pronates elbow