Movements Of Shoulder And Upper Arm Muscles

Front 1

Elevation of Scapula

Back 1

levator scapulae
rhomboid major
rhomboid minor
serratus anterior (upper portion)
trapezius (upper portion)

Front 2

Depression of Scapula

Back 2

serratus anterior (lower portion)
trapezius (lower portion)
pectoralis major (clavicular portion)

Front 3

Protraction of Scapula

Back 3

serratus anterior

Front 4

Retraction of Scapula

Back 4

rhomboid major
rhomboid minor
trapezius (middle fibers)
trapezius (lower fibers)

Front 5

Upward Rotation

Back 5

serratus anterior
trapezius (upper and lower portion)

Front 6

Downward Rotation of Scapula

Back 6

rhomboid major
rhomboid minor
levator scapulae
trapezius (lower portion)

Front 7

Flexion of Humerus

Back 7

biceps brachii
coracobrachialis
deltoid (anterior 1/3rd)
deltoid (middle 1/3rd)
pectoralis major (clavicular fibers)

Front 8

Extension of Humerus

Back 8

deltoid (posterior 1/3rd)
latissimus dorsi
teres major
triceps brachii (long head)

Front 9

Adduction of Humerus

Back 9

coracobrachialis
latissimus dorsi
pectoralis major
triceps brachii

Front 10

Abduction

Back 10

biceps brachii
deltoid (anterior 1/3rd)
deltoid (middle 1/3rd)
deltoid (posterior 1/3rd)
supraspinatus

Front 11

Horizontal Abduction of Humerus

Back 11

deltoid (posterior 1/3rd)
infraspinatus
teres minor

Front 12

Horizontal Adduction of Humerus

Back 12

deltoid (anterior 1/3rd)
pectoralis major

Front 13

Internal Rotation of Humerus

Back 13

deltoid (anterior 1/3rd)
latissimus dorsi
pectoralis major
subscapularis
teres major

Front 14

External Rotation of Humerus

Back 14

deltoid (posterior 1/3rd)
infraspinatus
teres minor
supraspinatus

Front 15

Biceps Brachii

Back 15

function: flexion of humerus, abduction of humerus
innervation: musculocutaneous nerve
artery: brachial artery

Front 16

Corachobrachialis

Back 16

function: flexion of humerus, adduction of humerus
innervation: musculocutaneous
artery: brachial artery

Front 17

Deltoid (Upper)

Back 17

function: flexion of humerus, abduction of humerus, horizontal adduction of humerus, internal rotation of humerus
innervation: axillary nerve
artery: posterior humeral circumflex artery and deltoid branch of thoracoacromial trunk

Front 18

Deltoid (Middle)

Back 18

function: abduction of humerus, flexion of humerus
innervation: axillary nerve
artery: posterior humeral circumflex artery and deltoid branch of thoracoacromial trunk

Front 19

Deltoid (Lower)

Back 19

function: extension of humerus, horizontal abduction of humerus, abduction of humerus, external rotation of humerus
innervation: axillary nerve
artery: posterior humeral circumflex artery and deltoid branch of thoracoacromial trunk

Front 20

Infraspinatus

Back 20

function: external rotation of humerus, horizontal abduction of humerus, humeral head stabilization
innervation: suprascapular nerve
artery: suprascapular artery

Front 21

Latissimus Dorsi

Back 21

function: extension of humerus, internal rotation of humerus, adduction of humerus, depression of shoulder girdle
innervation: thoracodorsal nerve
artery: thoracodorsal artery

Front 22

Pectoralis Major

Back 22

function: adduction of humerus, horizontal adduction of humerus, flexion of humerus (clavicular segment), internal humeral rotation, depression of shoulder girdle
innervation: lateral and medial pectoral nerve
artery: pectoral branches of thoracoacromial trunk, perforating branches of anterior intercostal arteries.

Front 23

Subscapularis

Back 23

function: internal rotation of humerus, humeral head stabilization
innervation: upper and lower subscapular nerve
artery: subscapular artery

Front 24

Supraspinatus

Back 24

function: abduction of humerus, external rotation of humerus, humeral head stabilization
innervation: suprascapular nerve
artery: suprascapular artery

Front 25

Teres Major

Back 25

function: extension of humerus, internal rotation of humerus, adduction of humerus
innervation: lower subscapular artery
artery: scapular circumflex artery

Front 26

Teres Minor

Back 26

function: external rotation of humerus, horizontal abduction of humerus
innervation:
artery:

Front 27

Triceps Brachii

Back 27

function: extension of humerus (long head), adduction of humerus
innervation: radial nerve
artery: deep brachia artery

Front 28

Latissiumus Dorsi

Back 28

function: depression of shoulder girdle, internal humeral rotation, humeral extension, humeral adduction
innervation: thoracodorsal nerve
artery: thoracodorsal artery

Front 29

Levator Scapulae

Back 29

function: scapula elevation, scapula downward rotation, extension of cervicle spine, rotation of cervicle spine
innervation: dorsal scapular nerve
artery: dorsal scapular artery

Front 30

Rhomboid Major

Back 30

function: scapular retraction, scapular elevation, downward rotation of scapular
innervation: dorsal scapular nerve
artery: dorsal scapular artery

Front 31

Rhomboid Minor

Back 31

function: scapular retraction, scapular elevation
innervation: dorsal scapular nerve
artery: dorsal scapular artery

Front 32

Serratus Anterior

Back 32

function: upward rotation of scapula, scapular protraction, scapular depression (lower fibers), scapular elevation (upper fibers)
innervation: long thoracic nerve
artery: lateral thoracic artery

Front 33

Trapezius (Upper)

Back 33

function: scapular elevation, upward rotation of scapula, rotation of cervical spine to opposite side, cervical spine extension
innervation: accessory nerve
artery: superficial branch of transverse cervical artery

Front 34

Trapezius (Middle)

Back 34

function: scapular retraction, thoracic spine fixation
innervation: accessory nerve
artery: superficial branch of transverse cervical artery

Front 35

Trapezius (Lower)

Back 35

function: scapular depression, scapular retraction, thoracic spine fixation
innervation: accessory nerve
artery: superficial branch of transverse cervical artery