Muscle Attachments- Upper Extremity

Question 1

Pectoralis Minor

Answer 1

from ribs 3-5 to the coracoid process of the scapula

Question 2

Rhomboids

Answer 2

from the lower cervical & upper thoracic spinous processes to the medial border of the scapula

Question 3

Serratus Anterior

Answer 3

from the upper 8-10 ribs to the deep, medial border of the scapula

Question 4

Trapezius

Answer 4

from the superior nuchal line, external occipital protuberance, ligamentum nuchae, & cervical & thoracic spinous processes to the clavicle, acromion & scapular spine

Question 5

Deltoid

Answer 5

from the clavicle, acromion & spine of the scapula to the deltoid tuberosity of the humerus

Question 6

Subscapularis

Answer 6

from the subscapular fossa to the lesser tubercle of the humerus

Question 7

Supraspinatus

Answer 7

from the supraspinous fossa to the greater tubercle of the humerus

Question 8

Teres Major

Answer 8

from the inferior angle of the scapula to the medial lip of the intertubercular sulcus of the humerus

Question 9

Infraspinatus

Answer 9

from the infraspinous fossa to the greater tubercle of the humerus

Question 10

Teres Minor

Answer 10

from the lateral border of the scapula to the greater tubercle of the humerus

Question 11

Biceps Brachii

Answer 11

from coracoid process (short head) and supraglenoid tubercle (long head) of the scapula to the radial tuberosity & the deep antebrachial fascia (through the bicipital aponeurosis)

Question 12

Brachialis

Answer 12

from the distal anterior shaft of the humerus to the coronoid process & ulnar tuberosity

Question 13

Coracobrachialis

Answer 13

from the coracoid process to the proximal medial shaft of the humerus

Question 14

Triceps Brachii

Answer 14

from the infraglenoid tubercle of the scapula (long head), & proximal posterolateral (lateral head) & distal posteromedial (medial) shaft of the humerus to the olecranon process of the ulna

Question 15

Abductor Pollicis Longus

Answer 15

from proximal posterior radius, ulna & interosseous membrane to the anterior base of the 1st metacarpal & trapezium

Question 16

Brachioradialis

Answer 16

from the lateral supracondylar ridge of the humerus to the distal radius adjacent to the styloid process

Question 17

Extensor carpi radialis brevis

Answer 17

from the lateral epicondyle of the humerus (common extensor origin) to the base of the 3rd metacarpal

Question 18

Extensor carpi radialis longus

Answer 18

from the lateral supracondylar ridge of the humerus to the base of the 2nd metacarpal

Question 19

Extensor carpi ulnaris

Answer 19

from the lateral epicondyle of the humerus (common extensor origin) to the base of the 5th metacarpal

Question 20

Extensor digitorum

Answer 20

from the lateral epicondyle of the humerus (common extensor origin) to the extensor expansions of digits 2-5

Question 21

Extensor digiti minimi

Answer 21

from the lateral epicondyle of the humerus (common extensor origin) to the digital expansion of the 5th digit

Question 22

Extensor indicis

Answer 22

from the posterior surface of the ulna & interosseous membrane to the digital expansion of the 2nd digit

Question 23

Extensor pollicis brevis

Answer 23

from the posterior radial surface & interosseous membrane to the base of the 1st proximal phalanx

Question 24

Extensor pollicis longus

Answer 24

from the middle 1/3rd of the posterior surface of the ulna & interosseous membrane to the base of the 1st distal phalanx

Question 25

Flexor carpi radialis

Answer 25

from the medial epicondyle (common flexor origin) to the palmar aspect of the bases of the 2nd & 3rd metacarpals

Question 26

Flexor carpi ulnaris

Answer 26

from the medial epicondyle (common flexor origin) of the humerus and proximal ulnar shaft to the pisiform

Question 27

Flexor digitorum profundus

Answer 27

from the anterior proximal 2/3rds of the ulna & interosseous membrane to the base of the distal phalanges of digits 2-5

Question 28

Flexor digitorum superficialis

Answer 28

from the medial epicondyle (common flexor origin) of the humerus to the sides of the middle phalanges of digits 2-5

Question 29

Flexor pollicis longus

Answer 29

from the anterior surface of the radius & interosseous membrane to the the base of the distal phalanx of the thumb

Question 30

Palmaris longus

Answer 30

from the medial epicondyle of the humerus (common flexor origin) to the palmar aponeurosis

Question 31

Pronator Quadratus

Answer 31

from the anterior surface of the distal radius to the anterior surface of the distal ulna

Question 32

Pronator Teres

Answer 32

from the medial epicondyle & ulnar coronoid process to lateral aspect of the radius

Question 33

Supinator

Answer 33

from the lateral epicondyle of the humerus, radial collateral ligament & shaft (supinator crest) of the ulna to the lateral surface of the proximal radius

Question 34

Abductor digiti minimi

Answer 34

from the pisiform to the ulnar side of the base of the 5th digit

Question 35

Abductor pollicis brevis

Answer 35

from the flexor retinaculum to the radial side of the base of the proximal phalanx of the thumb

Question 36

Adductor pollicis

Answer 36

from the capitate & 2nd & 3rd metacarpals (oblique head) and the palmar aspect of the 3rd metacarpal to the base of the proximal phalanx of the thumb

Question 37

Dorsal interossei

Answer 37

from the adjacent sides of the metacarpals to the proximal phalangeal bases and dorsal digital expansions of digits 2-4

Question 38

Flexor digiti minimi brevis

Answer 38

from the hamate to the ulnar side of the base of the proximal phalanx of the 5th digit

Question 39

Flexor pollicis brevis

Answer 39

from the flexor retinaculum & trapezium to the radial side of the base of the proximal phalanx of the thumb

Question 40

Lumbricals

Answer 40

from the tendons of the flexor digitorum profundus to the radial side of the dorsal digital expansions of digits 2-5

Question 41

Opponens digiti minimi

Answer 41

from the hook of the hamate to the ulnar margin of the shaft of the 5th metacarpal

Question 42

Opponens pollicis

Answer 42

from the flexor retinaculum & trapezium to the palmar surface of the 1st metacarpal

Question 43

Palmar Interossei

Answer 43

from the palmar aspects of metacarpals 2, 4 & 5 to the dorsal digital expansions of digits 2, 4 & 5