upper limb nerves Flashcards
which nerve innervates the anterior compartment of the arm?
musculocutaneous nerve
- Biceps brachii
- Brachialis
- Coracobrachialis
which nerve innervates muscles in the posterior compartment of arm?
radial nerve
- triceps brachii
which nerve innervates anterior compartment of the forearm?
all median nerve except flexor carpi ulnaris and flexor digitorum profundus (these are both ulan nerve)
which nerve innervates muscles in the posterior forearm compartment?
all radial nerve
contents of the carpal tunnel?
median nerve
x4 FDS
x4 FDP
x1 Flexor pollocis longus
median nerve innervated muscles?
LOAF*
Lateral 2 lumbricals
opponens pollicis
abductor pollicis brevis
flexor pollicis brevis
borders of the cubital fossa?
medial - pronator teres
lateral - brachioradialis
superor - between condyles
damage to which nerve causes wrist drop?
radial nerve damage from humeral midshaft #
humerus neck # will damage the _____ nerve. this results in a flat deltoid.
axillary nerve
medial epicondyle # damages the ___ nerve and results in a claw hand.
ulnar nerve
damage to which nerve results in winged scapula?
long thoracic nerve
action of each rotator cuff muscle?
supraspinatus - abduction
infra spinatus and teres minor - external rotation
subdcapularis - internal rotation
klumpkes palsy results from damage of the upper/lower brachial plexus?
lower (C8,T1)
e.g. sudden upwards hand jerk/boy falls from tree and catches branch
damage to ulnar nerve (C8,T1) - claw hand
Erb-Duchenne palsy results from damage to the upper/lower brachial plexus?
upper (C5,C6)
may be secondary to shoulder dystotica during forceps deliver
results in ‘waiters top posture’ - arm is hanging loosely, adducted and internally rotated below the elbow.
which hand muscles are innervated by the ulnar nerve?
DAP and PAD
