O: external occipital protuberance, superior nuchal line and ligament, spinous processes C7-T12

I: lateral 1/3 clavicle, acromion, spine of scapula

A: elevates, retracts, rotates scapula

N: motor from CN XI, sensory from C3-4

O: iliac crest, thoracolumbar fascia, spinous processes T6-T12, inferior angle scapula, inferior 3 ribs

I: floor intertubercular sulcus

A: adducts, internally rotates, extends arm

N: C6,7,8 thoracodorsal nerve

O: transverse processes C1-4

I: superior part of medial border of scapula

A: elevate scapula, rotate scapula medially, tilt glenoid cavity inferiorly

N: dorsal scapular nerve C4-5

O: spinous processes C7-T1

I: medial border scapula

A: retract, rotate scapula. depress glenoid cavity

N: dorsal scapular nerve C5

O: spinous processes T2-T5

I: medial border scapula

A: retract, rotate scapula. depress glenoid cavity

N: C5 dorsal scapular nerve

O: lateral 1/3 clavicle, acromion, spine of scapula

I: deltoid tuberosity of humerus

A: flex, extend, abduct arm

N: C5,6 axillary nerve

O: suprasinous fossa

I: greater tubercle of humerus

A: initiate abduction of arm, assist deltoid in abduction, holds humeral head in glenoid cavity

N: suprascapular nerve C5, 6

O: Infraspinous fossa

I: greater tubercle humerus

A: laterally rotate arm, hold humeral head in glenoid cavity

N: suprascapular nerve C5,6

O: superior part of lateral border of scapula

I: greater tubercle humerus

A: laterally rotate arm. hold humeral head in glenoid cavity

N: axillary C5,6

O: inferior angle scapula

I: intertubercular sulcus

A: adduct, medially rotate arm

N: Lower Subscapular C6,7

O: subscapular fossa

I: lesser tubercle humerus

A: adduct, medially rotate arm; holds humeral head in glenoid fossa

N: upper and lower subscapular nerves C5,6,7

O: external surfaces of lateral parts of ribs 1-8

I: anterior surface of medial border of scapula

A: rotates scapula laterally. protracts scapula and holds it against thoracic wall

N: long thoracic nerve C5, 6, 7

O: clavicular head: medial half of anterior clavicle; sternocostal head: anterior surface of sternum, superior 6 costal cartilages, aponeurosis of external obilque

I: lateral lip of intertubercular sulcus humerus

A: adduct, medially rotate arm. clavicular head can flex arm. sternocostal head can extend arm from flexed position

N: medial (C8, T1) and lateral (C5,6) pectoral nerves

O: 3-5 ribs near costal cartilages

I: coracoid process

A: stabilize scapula against thoracic wall; accessory respiratory muscle

N: medial pectoral nerve C8, T1

O: long head: supraglenoid tubercle; short head: coracoid process

I: tuberocity of the radius, bicipital aponeurosis

A: flex arm at shoulder and elbow, supinate forearm

N: musculocutaneous C5,6

O: distal, anterior humerus

I: coronoid process and ulnar tuberosity

A: flex forearm

N: musculocutaneus C5,6

O: coracoid process
I: middle, medial humerus

A: flex, adduct arm at shoulder

N: musculocutaneous C5,6,7 

O: Long head: infraglenoid tubercle of scapula; Short head: posterior surface of humerus superior to radial groove; Medial head: posterior surface of humerus inferior to radial groove

I: olecranon process of ulna

A: extend arm

N: radial nerve C6,7,8

O: lateral epicondyle humerus

I: lateral surface of olecranon and superior, posterior ulna

A: extends forearm; stabilizes elbow

N: radial nerve C7,8, T1

O: medial epicondyle humerus, coronoid process ulna

I: middle lateral radius

A: pronate forearm, flex elbow

N: Median nerve C6,7

O: medial epicondyle humerus

I: base of 2nd metacarpal

A: flex and abduct hand at wrist

N: Median C6, C7

O: medial epicondyle humerus

I: palmar aponeurosis, flexor retinaculum

A: flex wrist, tighten palmar aponeurosis

N: median nerve C7,8

O: humeral head: medial epicondyle humerus; ulnar head: olecranon process and posterior border of ulna

I: pisiform bone, hook of hamate, base of 5th metacarpal

A: flex, adduct wrist

N: ulnar nerve C7, 8

O: Humeroulnar head: medial epicondyle humerus, ulnar collateral ligament, coronoid process; Radial head: superior anterior radius

I: tendons split and insert into middle phalanx of digits 2-5

A: flexes PIPJ and MPJ of digits 2-5

N: median nerve C7, C8, T1

O: Proximal anterior ulna and interosseous membrane

I: base of distal phalanges 2-5

A: flex DIPJ 2-5 and assists with wrist flexion

N: medial part: ulnar nerve C8, T1; lateral part: median nerve C8, T1

O: anterior radius and interosseous membrane

I: base of distal phalanx of thumb

A: flexes thumb IPJ

N: anterior interosseous nerve branch of median nerve C8, T1

O: distal anterior ulna

I: distal anterior radius

A: pronates forearm, binds ulna and radius together

N: anterior interosseous nerve branch of median nerve C8, T1

O: proximal lateral supracondylar ridge of humerus

I: lateral surface of distal radius

A: flexes forearm

N: Radial nerve C5,6,7

O: lateral supracondylar ridge humerus

I: base of 2nd metacarpal

A: extend and abduct hand at wrist

N: radial nerve C6,7

O: lateral epicondyle humerus
I: base of 3rd metacarpal

A: extend and abduct hand at wrist

N: Deep branch radial nerve C7,8 

O: lateral epicondyle humerus

I: extensor hood digits 2-5 

A: extends MCP joints 2-5 and extends hands at wrist

N: posterior interosseous nerve from deep branch of radial nerve C7,8

O: lateral epicondyle humerus

I: extensor hood 5th digit

A: extends 5th digit at MCP and IP

N: posterior interosseous nerve branch of deep branch radial nerve C7,8

O: lateral epicondyle humerus and posterior humerus

I: base of 5th metacarpal

A: adducts, extends wrist

N: posterior interossous nerve branch of deep branch radial nerve C7,8

O: lateral epicondyle humerus, radial/collateral/annular ligaments, supinator fossa, ulnar crest

I: lateral/posterior/anterior surfaces of proximal radius

A: supinates forearm

N: deep branch radial nerve C5,6

O: posterior ulna, radius, interosseous membrane

I: base of 1st metacarpal

A: abduct thumb and assist in extension at carpometacarpal joint

N: posterior interosseous nerve branch of deep branch radial nerve C7,8

O: posterior surface of radius and interosseous membrane

I: base of proximal phalanx thumb

A: extends proximal phalanx of thumb

N: posterior interosseous nerve branch of deep branch of radial nerve C7, 8

O: posterior middle ulna and interosseous membrane

I: base of distal phalanx of thumb

A: extends distal phalanx of thumb

N: posterior interosseous nerve branch of deep branch of radial nerve C7,8

O: posterior ulna and interosseous membrane

I: extensor hood 2nd digit

A: extend 2nd digit. assist in hand extension

N: posterior interosseous nerve C7,8

A: flex MCP, extend IP

N: medial 2: ulnar nerve; lateral 2: median nerve