Nerve supply of upper limb

Question 1

Spinal roots 5 + 6, sensory @ regimental badge area, motor @ teres minor and deltoid muscles.

Answer 1

Axillary Nerve

Question 2

Spinal roots C5-7, sensory @ lateral forearm, motor @ anterior compartment of arm (BBC)

Answer 2

Musculocutaneous Nerve

Question 3

Spinal roots C6-T1, sensory @ lateral palm and lateral 3.5 fingers (palmar), motor @ flexor muscles of anterior forearm (except flexor carpi ulnaris + part of flexor digitorum profundus)

Answer 3

Median Nerve

Question 4

Spinal roots C5-T1, sensory @ posterior forearm + dorsal lateral palm + lateral 3.5 digits(dorsal), Motor @ triceps brachii + extensor muscles of forearm

Answer 4

Radial Nerve

Question 5

Spinal roots C8-T1, sensory @ medial 1.5 fingers and asscoiated palm area, motor @ muscles of hand (except thenar muscles and lateral lumbricals), flexor carpi unaris + medial half of flexor digitorum profundus

Answer 5

Ulnar Nerve

Question 6

Brachial Plexus oriinates from

Answer 6

C5 - T1 (axilla>medial arm, travels around brachial artery)

Question 7

Brachial plexus mnemonic

Answer 7

Really Tired Drink Coffee Now (roots, trunks, divisions, cords, nerves)

Question 8

C5 + C6 =

Answer 8

Superior trunk

Question 9

C7 =

Answer 9

middle trunk

Question 10

C8 + T1 =

Answer 10

Inferior trunk

Question 11

Lateral cord =

Answer 11

Musculo cutaneous nerve

Question 12

Medial cord =

Answer 12

ulnar nerve

Question 13

Lateral + medial cord =

Answer 13

Median nerve

Question 14

Posterior cord =

Answer 14

Axillary + Radial nerve

Question 15

Dermatomes of hand

Answer 15

C6 (at thumb) > C7 (middle finger and half of neighbour fingers) > C8 (medial hand)

Question 16

radial nerve compression/ injury causes

Answer 16

wrist drop