Upper Extremity Origin & Insertion

Question 1

Supraspinatus

Answer 1

O: Sup. scapula
I: Sup. facet of greater tuberosity of humerous

Question 2

Infraspinatus

Answer 2

O: Inf. scapula
I: Middle facet of greater tuberosity of humerus

Question 3

Teres Minor

Answer 3

O: Lat. border of scapula
I: Inf. facet of greater tuberosity of humerus

Question 4

Subscapularis

Answer 4

O: Ant. scapula
I: Lesser tuberosity of humerous

Question 5

Lattissimus Dorsi

Answer 5

O: Iliac crest, inf. 4 ribs, Spinouses T6 to Sacrum
I: Floor of intertubercular groove

Question 6

Serratus Anterior

Answer 6

O: External surface of 1st 8-9 ribs
I: Ant. & med. surface of vertebral border of scapula

Question 7

Rhomboid minor

Answer 7

O: SPs, C7-T1
I: Medial border of scapula

Question 8

Rhomboid major

Answer 8

O: SPs T2-T5
I: Medial border of scapula

Question 9

Deltoid

Answer 9

O: Around AC joint
I: Deltoid tuberosity of humerus

Question 10

Levator Scapulae

Answer 10

O: TPs of C1-C4
I: Sup/med. border of scapula

Question 11

Trapezius

Answer 11

O: Med. sup. nuchal line, EOP, ligamentum nuchae, SPs C7-T12
I: Lat. 1/3rd of clavicle, acromion, spine of scapula

Question 12

Subclavius

Answer 12

O: 1st rib
I: Groove for subclavius on clavicle

Question 13

Pec major

Answer 13

O: Clavicular head - ant. surface of med. 1/3rd clavicle
Sternal head - manubrium & body of sternum
Abdominal head - costal cartilages of ribs 2-6
I: Lat. lip of intertubercular groove

Question 14

Pec Minor

Answer 14

O: 3-5th ribs
I: Coracoid process of scapula

Question 15

Biceps

Answer 15

O: Long head - supraglenoid tubercle
Short head - coracoid process of scapula
I: Radial tuberosity

Question 16

Coracobrachialis

Answer 16

O: Coracoid process (scapula)
I: Humerus

Question 17

Brachialis

Answer 17

O: Humerus (lower ant. surface)
I: Coronoid/ulnar tuberosity

Question 18

Triceps

Answer 18

O: Long head - Infraglenoid tubercle
Lat. head - pos./lat aspect of humerus, above radial groove
Med. head - post/med aspect of humerus, below radial groove
I: Olecranon of Ulna

Question 19

Pronator Teres

Answer 19

O: Med. epicondyle/humerus, coronoid process of ulna
I: Middle of lat. surface of radius

Question 20

Flexor carpii ulnaris

Answer 20

O: Humeral head - med. epicondyle of humerus
Ulnar head - olecranon & pos. border of ulna
I: Pisiform, hook of hamate, base of 5th MCP

Question 21

Palmaris longus

Answer 21

O: Med. epicondyle/humerus
I: Palmar aponeurosis

Question 22

Flexor carpii radialis

Answer 22

O: Med. epicondyle/humerus
I: Base of 2nd & 3rd MCP

Question 23

Flexor digitorum supericialis

Answer 23

O: Humeroular head - Med. epicondyle, coronoid process of ulna, Ulnar collateral lig.
I: Palmar aspect of middle phalanx of digits 2-5

Question 24

Flexor Pollicis Longus

Answer 24

O: Ant. surface of radius & interosseous membrane
I: Base of distal phalanx of thumb

Question 25

Flexor digitorum profundus

Answer 25

O: Prox. ant. ulna & interosseous membrane I: DIPs 2-5

Question 26

Pronator Quadratus

Answer 26

O: Distal aspect of ant. ulna I: Distal aspect of ant. radius

Question 27

Supinator

Answer 27

O: Lat. epicondyle of humerus, lat. collateral lig. of elbow, annular lig., prox. pos. & lat. ulna I: Prox. 1/3rd of radius

Question 28

Anconeus

Answer 28

O: Lat. epicondyle of humerus I: Olecranon of ulna

Question 29

Extensor carpi radialis longus

Answer 29

O: Lat. supracondylar ridge of humerus I: Pos. aspect base of 2nd MCP

Question 30

Extensor carpi radialis brevis

Answer 30

O: Lat. epicondylar of humerus I: Pos. aspect base of 3rd MCP

Question 31

Extensor carpi ulnaris

Answer 31

O: Lat. epicondyle of humerus & olecranon I: Lat. aspect of base of 5th MCP

Question 32

Extensor digitorum communis

Answer 32

O: Lat. epicondyle of humerus I: Pos. surfaces of base of middle & distal phalanges of digits 2-5

Question 33

Extensor digiti minimi

Answer 33

O: Lat. epicondyle of humerus I: Base of middle & distal phalanges of 5th digit

Question 34

Extensor indicus

Answer 34

O: Ulna & interosseous membrane I: Joins tendon of extensor digitorum to index finger

Question 35

Extensor pollicis longus

Answer 35

O: Pos. midshaft ulna & interosseous membrane I: Base of distal phalanx of thumb

Question 36

Extensor pollicis brevis

Answer 36

O: Pos. surface of radius & interosseous membrane I: Base of prox. phalanx of thumb

Question 37

Abductor pollicis longus

Answer 37

O: Pos. surface of radius & ulna & interosseous membrane I: Base of 1st MCP

Question 38

Brachioradialis

Answer 38

O: Lat. supracondylar crest of humerus I: Distal radius, prox. to styloid process