Appendix B: Muscles and nerves of upper extremity

Question 1

neuro exam strength levels

Answer 1

5 normal
4 with some Resistance
3 no Resistance but against gravity
2 without gravity
1 tiny amount
0 none

Question 2

dermatome C1

Answer 2

skull vertex

Question 3

dermatome C2

Answer 3

temple and occipital area

Question 4

dermatome C3

Answer 4

supraclavicular fossa

Question 5

dermatome C4

Answer 5

superior aspect shoulder

Question 6

dermatome C5

Answer 6

lateral aspect elbow

Question 7

motor C5

Answer 7

elbow flexors

biceps reflex

Question 8

dermatome C6

Answer 8

lateral forearm and thumb

Question 9

motor C6

Answer 9

wrist extensors

brachioradialis reflex

Question 10

dermatome C7

Answer 10

middle finger

Question 11

motor C7

Answer 11

elbow extensors

triceps reflex

Question 12

dermatome C8

Answer 12

little finger and middle forearm

Question 13

motor C8

Answer 13

deep finger and wrist flexors

Question 14

dermatome T1

Answer 14

medial elbow and medial arm

Question 15

motor T1

Answer 15

finger ABduction

Question 16

ulnar nerve distribution in hand, sensory

Answer 16

4th and 5th digits

Question 17

radial nerve distribution hand, sensory

Answer 17

dorsal 1-3 fingers and lateral thumb

Question 18

inn action of deltoid

Answer 18

axillary n C5 C6

ABduct, ADduct, flex extend shoulder

Question 19

inn and action supraspinatus

Answer 19

suprascap nn C4 C5!! C6

begin Abduct arm

Question 20

infraspinatus inn and action

Answer 20

Suprascap n C4 C5!! C6

externall rotate arm

Question 21

supscapularis inn and action

Answer 21

upper and lower subscap nn
C5 C6!! C7
internally rotate arm

Question 22

action inn of teres major

Answer 22

lower sub scap C6!! C7

ADduct and internally rotate arm

Question 23

action and inn of teres minor

Answer 23

axillary n C5!! C6

externally rotate

Question 24

action and inn of latis dorsi

Answer 24

thoracodorsal C6 C7 C8

ADduct, extend shoulder, int rotate arm

Question 25

what mm insert on greater tubercle humerus

Answer 25

teres minor infraspinatus supraspinaus

Question 26

what mm insert on lesser tubercle humerus

Answer 26

subscapularis

Question 27

mm of the arm

Answer 27

coracobrachialis biceps brachii brachialis triceps and anconeus??

Question 28

inn and action coracobrachialis

Answer 28

musculocutaneous C5 C6 C7 | flex and ADduct arm

Question 29

inn and action of biceps brachii

Answer 29

musculocutaneous C5 C6 | flex elbow and supinate forearm

Question 30

inn and action brachialis

Answer 30

musculocutaneous C5 C6 | flex elbow

Question 31

insertion biceps brachii

Answer 31

radial tuberosity of radius, why it can supinate long head starts glenoid labrumm short head starts coracoid process

Question 32

innervation and action of triceps

Answer 32

radial n C6 C7!! C8!! | extends elbow

Question 33

heads of triceps origin

Answer 33

long head- lateral edge scapula lateral head- superior to radial groove on humerus medial head- humerus inferior to radial groove

Question 34

inn and action of anconeus

Answer 34

radial n C7 C8 T1 | extend elbow

Question 35

mm innervated by median nerve

Answer 35

pronator teres-- pronation flexor carpi radialis-- flex and ABduct hand palmaris longus-- flex hand flexor digitorum superficialis-- flex PIP and hand 1-2 fingers flexor digitorum profundus-- flex DIP flexor pollicus longus-- flex thumb pronator quadratus-- pronates forearm ABductor pollicis brevis flexor pollicis brevis opponens pollicis1&2 lumbricals-- flex MCP and extend IP

Question 36

mm innervated by ulnar nerve

Answer 36

flexor carpi ulnaris- flexus and adducts hand 3-4 fingers flexor digitorum profundus-- flex DIP ADductor polliculs ABductor digiti minimi flexor digitorum minimi brevis opponens digiti minimi lumbricals 3-4--- flex MCP extend IP DABs and PADs: dorsal interossei ABduct (x4), Palmar interoseei ADduct(x3)

Question 37

mm inn by radial nn

Answer 37

``` brachioradialis extensor carpi radialis longus extensor carpi radialis brevis extensor digitorum extensor digiti minimi extensor carpi ulnaris supinator ABductor pollicus longus extensor pollicis longus extensor pollicis brevis extensor indicis ```