Arm (Brachium) And Forearm (Antebrachium)

Front 1

M. biceps brachii

Back 1

O: Caput longum: tuberculum supraglenoidale

Caput breve: proc. coracoideus

I: Tuberositas radii

I: N. musculocutaneus (C5-C6)

Front 2

M. brachialis

Back 2

O: distal half of the anterior surface of humerus

I: Tuberositas ulnae

I: N. musculocutaneus (C5-C6) + N.radialis

Front 3

M. triceps brachii

Back 3

O: Caput longum: tuberculum infraglenoidale of the scapula

Caput mediale: posterior surface of the humerus, distal to the Sulcus n.radialis

Caput laterale: posterior surface of the humerus, proximal to the Sulcus n.radialis

I: Olecranon of the ulna

I: N.radialis (C6-C8)

Front 4

M. anconeus

Back 4

O: epicondylus laterialis of the humerus

I: Olecranon of the ulna

I: N.radialis (C6-C8)

Front 5

M. pronator teres

Back 5

O: Caput humerale: epicondylus medialis of the humerus

Caput ulnare: proc. coronoideus of the ulna

I: Facies lateralis radii

I: N. medianus (C6, C7)

Front 6

M. flexor digitorum superficialis

Back 6

O: Caput humerale: epicondylus medialis of the humerus

Caput ulnare: proc. coronoideus of the ulna

Caput radiale: distal to the tuberositas radii

I: the sides of the middle phalanges of the second through fifth digits

I: N. medianus

Front 7

M. flexor carpi radialis

Back 7

O: epicondylus medialis of the humerus

I: Base of the Os metacarpi II

I: N.ulnaris (C7-T1) (?)

Front 8

M. palmaris longus

Back 8

O: epicondylus medialis of the humerus

I: palmar aponeurosis

I: N. medianus (C7, C8)

Front 9

M. flexor digitorum profundus

Back 9

O: proximal 2/3 of the flexor surface of the ulna and the adjacent Membrana interossea

I: Palmar surface of the distal phalanges of the second through fifth digits

I: N. medianus (radial part, 2nd + 3rd digits. C8-T1)

N.ulnaris (ulnar part, 4th + 5th digits. C7-T1)

Front 10

M. flexor pollicis longus

Back 10

O: Mid-anterior surface of the radius and the adjacent Membrana interossea

I: palmar surface of the distal phalanx of the thumb

I: N.medianus (C7, C8)

Front 11

M. pronator quadratus

Back 11

O: distal 1/4 of the anterior surface of the ulna

I: distal 1/4 of the anterior surface of radius

I: N. medianus (C7, C8)

Front 12

Flexors of the forearm

Back 12

Mm. pronator teres, flexor digitorum superficialis, flexor carpi radialis, flexor carpi ulnaris, palmaris longus, flexor digitorum profundus, flexor pollicis longus, pronator quadratus

Front 13

Actions of biceps brachii

Back 13

Elbow: flexion + supination

Shoulder: flexion, stabilization of humeral head during deltoid contraction, abduction and internal rotation

Front 14

Innervated by N.musculocutaneus

Back 14

Mm. biceps brachii, brachialis, coracobrachialis

Front 15

M. brachioradialis

Back 15

O: lateral surface of the distal humerus

I: proc. styloidus radii

I: N.radialis (C5, C6)

Front 16

M. extensor carpi radialis longus

Back 16

O: lateral surface of the distal humerus

I: dorsal base of the Os metacarpi II

I: N. radialis (C6, C7)

Front 17

M. extensor carpi radialis brevis

Back 17

O: epicondylus lateralis brevis

I: dorsal base of the Os metacarpi II

I: N. radialis (C7, C8)

Front 18

M. extensor digitorum

Back 18

O: caput commune

I: dorsal digital expansion of the 2nd-5th digits

I: N. radialis (C7, C8)

Front 19

M. digiti minimi

Back 19

O: Caput commune

I: Dorsal digital expansion og the 5th digit

I: N. radialis (C7, C8)

Front 20

M. extensor carpi ulnaris

Back 20

O: caput commune

I: Base of the Os metacarpi V

I: N. radialis (C7, C8)

Front 21

M. supinator

Back 21

O: olecranon of the ulna, epicondylus lateralis of the humerus, lig. collaterale radiale,lig. anulare radii

I: Radius

I: N. radialis (C6, C7)

Front 22

M. abductor pollicis longus

Back 22

O: dorsal surfaces of the radius and ulna, also Membrana interossea

I: Base of the Os metacarpi

I: N. radialis (C7, C8)

Front 23

M. extensor pollicis brevis

Back 23

O: posterior surface of the radius and the Membrana interossea

I: Base of the proximal phalanx of the thumb

I: N. radialis (C7, C8)

Front 24

M. extensor pollicis longus

Back 24

O: posterior surface of the ulna and the Membrana interossea

I: Base of the distal phalanx of the thumb

I: N. radialis (C7, C8)

Front 25

M. extensor indicis

Back 25

O: posterior surface of the ulna, the Membrana interossea

I: posterior digital expasion of the 2nd digit

I: N. radialis (C7, C8)

Front 26

Muscles on the arm and forearm innervated by N.ulnaris

Back 26

Mm. flexor carpi ulnaris and flexor digitorum profundus

Front 27

Muscles on the arm and forearm innervated by N.medianus

Back 27

Mm. pronator teres, flexor digitorum superficialis, flexor carpi radialis, palmaris longus, flexor digitorum profundus, flexor pollicis longus, pronator quadratus

Front 28

Actions of M. triceps brachii

Back 28

Elbow: extension

Shoulder: caput longum: backward movement and adduction of the arm

Front 29

Flexion of the elbow joint

Back 29

Mm. biceps brachii, brachialis, brachioradialis

weak: pronator teres, flexor digitorum superficialis, palmaris longus, extensor carpi radialis longus, extensor carpi radialis brevis

Front 30

Supinators

Back 30

Mm. biceps brachii, supinator

Front 31

Pronators

Back 31

Mm. pronator teres, pronator quadratus, brachioradialis (semipronation),