Upper Extremity (Proximal and Distal Attachments)

Question 1

Abductor Pollicis Brevis

Answer 1

P: Tubercles of Scaphoid and Trapezium, and flexor retinaculum
D: Lateral side of base proximal phalanx of thumb

Question 2

Flexor Pollicis Brevis

Answer 2

P: Tubercles of Scaphoid and Trapezium, and Flexor retinaculum
D: Lateral side of base of proximal phalanx of thumb

Question 3

Abductor Pollicis Longus

Answer 3

P: Posterior Surfaces of Ulna, Radius, and Interosseous Membrane
D: Base of 1st Metacarpal

Question 4

Adductor Pollicis

Answer 4

P1: Oblique Head - Bases of 2nd and 3rd metacarpals, capitate, and adjacent carpals
P2: Transverse Head - Anterior Surface of body of 3rd metacarpal
D: Medial side of base of proximal phalanx of thumb

Question 5

Anconeus

Answer 5

P: Lateral Epicondyle of Humerus
D: Lateral Surface of olecranon and superior part of posterior surface of ulna

Question 6

Biceps Brachii

Answer 6

P1: Short head - Tip of coracoid process of scapula
P2: Long head - Supraglenoid tubercle of scapula
D: Tuberosity of radius and fascia of forearm via bicipital aponeurosis

Question 7

Brachialis

Answer 7

P: Distal half of anterior surface of humerus
D: Coronoid process and tuberosity of ulna

Question 8

Brachioradialis

Answer 8

P: Proximal two-thirds of lateral supracondyle ridge of humerus
D: Lateral surface of distal end of radius

Question 9

Coracobrachialis

Answer 9

P: Tip of coracoid process of scapula
D: Middle third of medial surface of humerus

Question 10

Deltoid

Answer 10

P: Lateral Clavicle, acromion, and spine of scapula
D: Deltoid tuberosity of humerus

Question 11

Extensor Carpi Radialis Brevis

Answer 11

P: Lateral epicondyle of humerus
D: Base of 3rd Metacarpal

Question 12

Extensor Carpi Radialis Longus

Answer 12

P: Lateral supracondylar ridge of humerus
D: Base of 2nd Metacarpal

Question 13

Extensor Carpi Ulnaris

Answer 13

P: Lateral epicondyle of humerus and posterior border of ulna
D: Base of 5th Metacarpal

Question 14

Extensor Digiti Minimi

Answer 14

P: Lateral epicondyle of humerus
D: Extensor expansion of 5th digit

Question 15

Extensor Digitorum

Answer 15

P: Lateral epicondyle of humerus
D: Extensor expansions of medial four digits

Question 16

Extensor Indicis

Answer 16

P: Posterior Surface of ulna and interosseous membrane
D: Extensor expansion of 2nd digit

Question 17

Flexor Carpi Radialis

Answer 17

P: Medial epicondyle of humerus
D: Base of 2nd metacarpal

Question 18

Flexor Carpi Ulnaris

Answer 18

P1: Medial epicondyle of humerus
P2: Ulnar head - Olecranon and posterior border of ulna
D: Pisiform bone, hook of hamate bone, and 5th metacarpal

Question 19

Flexor Digiti Minimi Brevis

Answer 19

P: Hook of Hamate and flexor retinaculum
D: Medial side of base of proximal phalanx of little finger

Question 20

Flexor Digitorum Profundus

Answer 20

P: Proximal 3/4ths of medial and anterior surfaces of ulna and interosseous membrane
D: Base of distal phalanges of medial four digits (2-5)

Question 21

Flexor Digitorum Superficialis

Answer 21

P1: Humoulnar Head - Medial epidondyle of humerus, ulnar collateral ligament, and coronoid process of ulna
P2: Radial head - Superior half of anterior border of radius
D: Bodies of middle phalangies of medial four digits (2-5)

Question 22

Flexor Pollicis Longus

Answer 22

P: Anterior surface of radius and adjacent interosseous membrane
D: Base of distal phalanx of thumb

Question 23

Infraspinatus

Answer 23

P: Infraspinous fossa of scapula
D: Middle facet on greater tuberosity of humerus

Question 24

Latissimus Dorsi

Answer 24

P: Spinous processes of inferior 6 thoracic vertebrae, thoracolumbar fascia, iliac crest, and inferior 3 or 4 ribs
D: Floor of intertubercular groove of humerus

Question 25

Levator Scapulae

Answer 25

P: Posterior tubercles of transverse processes of C1-C4 vertebrae D: Superior part of medial border of scapula

Question 26

Lumbricals

Answer 26

P1: Lumbricals 1 and 2 - Lateral two tendons of flexor digitorum profundus P2: Lumbricals 3 and 4 - Medial three tendons of flexor digitorum profundus D: Lateral sides of extensor expansions of medial digits (2-5)

Question 27

Opponens Digiti Minimi

Answer 27

P: Hook of hamate and flexor retinaculum D: medial border of 5th metacarpal

Question 28

Opponens Pollicis

Answer 28

P: Flexor retinaculum and tubercles of scaphoid and trapezium D: Lateral side of 1st metacarpal

Question 29

Palmaris Longus

Answer 29

P: Medial epicondyle of humerus D: Distal half of flexor retinaculum and palmar aponeurosis

Question 30

Pectoralis Major

Answer 30

P1: Clavicular head - Anterior surface of medial half of clavicle P2: Sternocostal head - Anterior surface of sternum, superior six costal cartilages, and aponeurosis of external oblique muscle D: Lateral lip of intertubercular groove of humerus

Question 31

Pectoralis Minor

Answer 31

P: 3rd to 5th ribs near their costal cartilages D: Medial border and superior surface of coracoid process of scapula

Question 32

Pronator Quadratus

Answer 32

P: Distal fourth of anterior surface of ulna D: Distal fourth of anterior surface of radius

Question 33

Pronator Teres

Answer 33

P: Medial epicondyle of humerus and coronoid process of ulna D: Middle of lateral surface of radius

Question 34

Rhomboid Major

Answer 34

P: Spinous processes of T2-T5 Vertebrae D: Medial border of scapula from level of spine to inferior angle

Question 35

Serratus Anterior

Answer 35

P: External surfaces of lateral parts of 1st to 8th ribs D1: Superior - Superior angle D2: Intermediate - Along the medial border D3: Inferior - Near the inferior angle

Question 36

Rhomboid Minor

Answer 36

P: Nuchal ligament and spinous processes of C7 and T1 vertebrae D: Medial border of scapula from level of spine to inferior angle

Question 37

Subclavius

Answer 37

P: Junction of 1st rib and its costal cartilage D: Inferior surface of middle third of clavicle

Question 38

Subscapularis

Answer 38

P: Subscapular fossa of scapula D: Lesser tuberosity of humerus

Question 39

Supinator

Answer 39

P: Lateral epicondyle of humerus, radial collateral and annular ligaments, supinator fossa and crest of ulna D: Lateral posterior and anterior surfaces of proximal third of radius

Question 40

Supraspinatus

Answer 40

P: Supraspinous fossa of scapula D: Superior facet on greater tuberosity of humerus

Question 41

Teres Major

Answer 41

P: Dorsal surface of inferior angle of scapula D: Medial lip of intertubercular groove of humerus

Question 42

Teres Minor

Answer 42

P: Superior part of lateral border of scapula D: Inferior facet on greater tuberosity of humerus

Question 43

Trapezius

Answer 43

P: Medial third of superior nunchal line; external occipital protuberance, nunchal ligament, and spinous processes of C7-T12 D: Lateral third of clavicle, acromion, and spine of scapula

Question 44

Triceps Brachii

Answer 44

P1: Long head - Infraglenoid tubercle of scapula P2: Lateral head - Posterior surface of humerus, superior to radial groove P3: Medial head - Posterior surface of humerus, inferior to radial groove D: Proximal end of olecranon process of ulna and fascia of forearm