Brachial Plexus Flashcards
What Nerve roots are involved in the axillary nerve?
C5 and C6
What two muscles are supplied by the axillary nerve?
Deltoid and teres minor
What action does deltoid perform?
shoulder abduction
What action does teres minor perform?
external rotation
What sensation does the axillary nerve provide?
Deltoid region and superior posterior arm
What nerve roots are involved in the musculocutaneous nerve?
C5, C6 and C7
Which muscles do the musculocutaneous nerve supply? What is their action?
Anterior compartment of the arm.
Elbow flexion
Name 3 muscles supplied by the musculocutaneous nerve
coracobrachialis, brachialis, biceps brachii
What sensation does the musculocutaneous nerve supply?
Lateral forearm
What nerve roots are involved in the radial nerve?
C5, C6, C7, C8 and T1
Which muscles are innervated by the radial nerve?
The posterior compartment of the forearm and arm
What action do muscles supplied by the radial nerve do?
Elbow, wrist and digit extension
Name the muscles supplied by the radial nerve?
Tricpes brachii anconeus brachoradialis extensor carpia radialis longis and brevis supinator extensor digitorium extensor carpi ulnaris extensor pollicis longus and brevis
What sensation does the radial nerve supply?
Posterior arm and forearm
lateral 2/3rds of the dorsum of the hands and fingers
What nerve roots are involved in the median nerve?
C5, C6, C7, C8 and T1
Which muscles are innervated by the median nerve?
Flexor muscles in the forearm (except flexor carpi ulnaris and the ulnar head of flexor digitorum profundus)
thenar muscles
radial two lumbricals
What are the LOAF muscles?
Intrinsic hand muscles supplied by the median nerve Lateral two lumbricals Opponens pollicis Abductor pollicis brevis Flexor pollicis brevis
What sensation does the median nerve supply?
lateral 2/3rds of the palm of the hand and fingers
What nerve roots are involved in the ulnar nerve?
C8 and T1
What muscles does the ulnar nerve innervate?
Flexor carpi ulnaris and the medial half of flexor digitorium profundus.
Intrinsic hand muscles (except LOAF)
What sensation does the ulnar nerve provide?
Medial surface of dorsum and palm of the hand.
