Origins

Trapezius Upper Fibers

- external occipital protuberance

- ligamentum nuchae

- C1-C7 spinous processes

Trapezius Middle Fibers

spinous processes of T1-T4

Trapezius Lower Fibers

spinous processes of T5-T12

Latissimus Dorsi

- inferior angle of scapula

- 9-12 ribs

- spinous processes of T7-T12

- thoracolumbar fascia

- posterior 1/3 of iliac crest

Levator Scapulae

C1-C4 transverse processes

Rhomboid Major

spinous processes of T2-T5

Rhomboid Minor

- spinous processes C7-T1

- inferior nuchal ligament

Serratus Posterior Superior

- C7-T3 spinous processes

- nuchal ligament

Serratus Posterior Inferior

- T12-L3 spinous processes

- thoracolumbar fascia

Pectoralis Major

- anterior surface of medial half of clavicle

- anterior surface of sternum

- superior 6 costal cartilages

- aponeurosis of external oblique muscle

Pectoralis Minor

3rd-5th ribs near their costal cartilages

Serratus Anterior

external surfaces of lateral parts of 1st-8th ribs

Deltoid (anterior)

clavicle

Deltoid (middle)

accromion

Deltoid (posterior)

spine of scapular

Supraspinatus

supraspinous fossa of scapula

Infraspinatus

infraspinous fossa of scapula

Teres Minor

middle part of lateral border of scapula

Subscapularis

subscapular fossa

Teres Major

- inferior part of lateral border of scapula

- posterior surface of inferior angle of scapula

Biceps Brachii (short head)

coracoid process of scapula

Biceps Brachii (long head)

supraglenoid tubercle

Brachialis

distal half of anterior surface of humerus

Coracobrachialis

tip of coracoid process of scapula

Triceps Brachii (long head)

infraglenoid tubercle of scapula

Triceps Brachii (lateral head)

posterior surface of humerus, superior to radial groove

Triceps Brachii (medial head)

posterior surface of humerus, inferior to radial groove

Anconeus

lateral epicondyle of humerus

pronator teres (humeral head)

medial epicondyle of humerus (common flexor tendon)

Pronator Teres

• medial epicondyle

• coronoid process of ulna

Flexor Carpi Radialis

medial epicondyle of humerus (common flexor tendon)

Palmaris Longus

medial epicondyle of humerus (common flexor tendon)

Flexor Carpi Ulnaris

• olecranon and posterior border of ulna

• medial epicondyle of humerus (common flexor tendon)

Flexor Carpi Ulnaris

• olecranon and posterior border of ulna

• medial epicondyle of humerus

Flexor Digitorum Superficialis

• medial epicondyle of humerus

• oblique line of the radius

Flexor Digitorum Superficialis

• oblique line of radius

• medial epicondyle

Flexor Digitorum Profundus

- proximal three quarters of medial and anterior surfaces of ulna

- interosseous membrane

Flexor Pollicis Longus

anterior surface of radius and adjacent interosseous membrane

Pronator Quadratus

distal quarter of anterior surface of ulna

Brachioradialis

proximal two thirds of lateral supracondylar ridge of humerus

Extensor Carpi Radialis Longus

lateral supracondylar ridge of humerus

Extensor Carpi Radialis Brevis

lateral epicondyle of humerus (common extensor tendon)

Extensor Digitorum

lateral epicondyle of humerus (common extensor tendon)

Extensor Digiti Minimi

lateral epicondyle of humerus (common extensor tendon)

Extensor Carpi Ulnaris

- lateral epicondyle of humerus (common extensor tendon)

- posterior border of ulna via a shared aponeurosis

Supinator

- lateral epicondyle of humerus

- radial collateral and annular ligaments

- supinator fossa

- crest of ulna

Abductor Pollicis Longus

posterior surface of proximal halves of ulna, radius, and interosseous membrane

Extensor Pollicis Longus

posterior surface of middle third of ulna and interosseous membrane

Extensor Pollicis Brevis

posterior surface of distal third of radius and interosseous membrane

Extensor Indicis

posterior surface of distal third of ulna and interosseous membrane