Shoulder Girdle, Shoulder Joint, Elbow Muscles

Muscle associations and their insertions, origins, actions, and innervations

shoulder girdle muscles 6

trapezius

rhomboid

levator scapula

serratus anterior

pectoralis MINOR

(subclavius)

anterior shoulder girdle muscles

pectoralis MINOR

(subclavius)

anterolateral shoulder girdle muscles

serratus anterior

posterior shoulder girdle muscles 3

trapezius

rhomboid

levator scapula

serratus anterior

pectoralis MINOR

trapezius

rhomboid

levator scapulae

subclavius

trapezius muscle group

shoulder girdle

rhomboid muscle group belongs to

shoulder girdle

levator scapula muscle group

shoulder girdle

serratus anterior muscle group

shoulder girdle

pectoralis MINOR muscle group

shoulder girdle

subclavius muscle group

shoulder girdle

(less important than others)

serratus anterior origin

ribs 1-9

serratus anterior insertion

medial border of scapula

serratus anterior action 3

protraction

upward rotation

stabilize scapula to thorax

serratus anterior innervation

long thoracic nerve

C5-7

pectoralis MINOR origin

ribs 3-5

pectoralis MINOR insertion

coracoid process of scapula

pectoralis MINOR innervation

medial pectoral nerve

c8-t1

pectoralis MINOR action

protraction / abduction

downward rotation

depression

(of scapula)

UPPER trapezius origin

external occipital protuberance, C7

UPPER trapezius insertion

distal post 1/3 of clavicle

UPPER trapezius action

elevation

extension, rotation of the head

MIDDLE trapezius origin

spinous processes of T1-5

MIDDLE trapezius insertion

spine of scapula

MIDDLE trapezius action

elevation

adduction

upper rotation

LOWER trapezius origin

spinous processes of T6-12

LOWER trapezius insertion

spine of scapula

LOWER trapezius action

adduction

depression

upper rotation

trapezius innervation

spinal accessory nerve

branches of C3-4

trapezius action

elevation / depression

extension, rotation of the head

adduction

upper rotation

trapezius parts responsible for elevation

upper, middle

trapezius parts responsible for depression

lower

rhomboid origin

spinous processes of T2-5, C7, T1

rhomboid insertion

medial border of scapula

rhomboid action

retraction

adduction

downward rotation

elevation

(of scapula)

rhomboid innervation

dorsal scapular nerve

levator scapulae origin

transverse processes of C1-4

levator scapulae insertion

superior angle of scapula

levator scapulae action

downward rotation

elevation

(of scapula)

levator scapulae innervation

dorsal scapular nerve

subclavius origin

1st rib

subclavius insertion

mid clavicle

subclavius action 3

depression

abduction

stabilize, protect sternoclavicular joint

C3-4 branches innervate

trapezius

levator scapula

spinal accessory nerve innervates

trapezius

dorsal scapular nerve innervates

levator scapulae

rhomboid

long thoracic nerve innervates

serratus anterior

medial pectoral nerve innervates

pectoralis MINOR

shoulder joint muscles

deltoid

coracobrachialis

teres MAJOR

supraspinatus, infraspinatus, teres minor, subscapularis

latissimus dorsi

pectoralis MAJOR

intrinsic glenohumeral muscles 7

deltoid

coracobrachialis

teres MAJOR

supraspinatus, infraspinatus, teres minor, subscapularis

extrinsic glenohumeral muscles

latissimus dorsi

pectoralis MAJOR

rotator cuff muscles

supraspinatus

infraspinatus

teres MINOR

subscapularis

(SITS)

deltoid muscle group

shoulder joint

intrinsic glenohumeral

coracobrachialis muscle group

shoulder joint

intrinsic glenohumeral

tere

sub

infraspinatus muscle group

shoulder joint

intrinsic glenohumeral

rotator cuff

teres MINOR muscle group

subscapularis muscle group

shoulder joint

intrinsic glenohumeral

rotator cuff

latissimus dorsi muscle group

shoulder joint

extrinsic glenohumeral

pectoralis MAJOR muscle group

shoulder joint

extrinsic glenohumeral

anterior shoulder joint muscles

pectoralis MAJOR

coracobrachialis

subscapularis

superior shoulder joint muscles

deltoid

supraspinatus

posterior shoulder joint muscles

latissimus dorsi

teres MAJOR

infraspinatus

teres MINOR

lateral pectoral nerve innervation

pectoralis MAJOR

(clavicular head)

medial pectoral nerve innervation

pectoralis MAJOR

(sternal head)

thoracodorsal nerve innervation

latissimus dorsi

axillary nerve innervation

deltoid

teres MINOR

upper subscapular nerves innervation

subscapularis

lower subscapular nerve innervation

subscapularis

teres major

suprascapular nerve innervation

supraspinatus

infraspinatus

musculocutaneous nerve innervation

coracobrachialis

ANTERIOR deltoid origin

anterosuperior lateral 1/3 of clavicle

ANTERIOR deltoid action

abduction

flexion

horizontal adduction

internal rotation

MIDDLE deltoid origin

acromion process

MIDDLE deltoid action

abduction

POSTERIOR deltoid origin

inferior spine of scapula

POSTERIOR deltoid action

abduction

extension

horizontal abduction

external rotation

deltoid innervation

axillary nerve

deltoid origins

anterosuperior lateral 1/3 of clavicle

acromion process

inferior spine of scapula

deltoid insertion

deltoid tuberosity of humerus

deltoid action

abduction

flexion / extension

horizontal adduction / abduction

internal / external rotation

deltoid

pectoralis MAJOR sternal head location

inferior

pectoralis MAJOR, sternal division origin

sternum to 7th rib

pectoralis MAJOR, sternal division action 4

internal rotation

horizontal adduction

extension (from flexion)

adduction

pectoralis MAJOR, sternal division innervation

lateral, medial pectoral nerves

pectoralis MAJOR clavicular head location

superior

pectoralis MAJOR, clavicular division origin

anteromedial ½ of clavicle

pectoralis MAJOR, clavicular division action

internal rotation

horizontal adduction

flexion

abduction / adduction

pectoralis MAJOR, clavicular division innervation

lateral pectoral nerve

pectoralis MAJOR origin

anteromedial ½ of clavicle

sternum to 7th rib

pectoralis MAJOR insertion

lateral intertubercular sulcus of humerus

crest of greater tubercle

pectoralis MAJOR innervation

lateral, medial pectoral nerve

pectoralis MAJOR action

internal rotation

horizontal adduction

flexion

abduction / adduction

extension (from flexion)