upper limb Flashcards
1
Q
median nerve
A
- C5-T1
- Lateral to brachial a in arm but crosses medially in cubital fosa
- lies between headsof PRONATOR TERES
- between FDS&FDP
- enters carpal tunel between (PL) FDS and FCR, gives recurrent branch to thenars
- SENSORY to LATERAL 3.5 digits of plam and their nailbeds dorsallt
- tested on index finger
- branches:
- Anterior interosseous: in proximal FA
- Palmar cutaneous: arises proximal to wrist, overlies flexor retinacumum
Innervates:
Forearm except FCU and medial FDP
Innervates ABDPB, FPB, OP
2
Q
Ulnar nerve
A
- C7-T1
- no branches in arm
- lies posterior to medial epicondyle of HUMERUS
- passes through medial intermuscular septum in mid-arm
- courses between two heads of FCU
- lies anterior to FDP
- DORSAL CUTANEOUS branch proximal to wrist & PALMAR CUT. BRANCH
- MEDIAL TO ULNAR ARTERY
- over hypothenars divides into superficial (sensory to lateral 1.5 digits) & deep branch (motor, winds around HOOK OF HAMMATE)
- tested on little finger
- Innervates ,emdial lumbricals, FCU, medial FDP, ODM,FDM,AbDM,interossei,AddP
3
Q
raidial nerve
A
C5-C8
passes psoteriorly through triangular space (LH triceps, teres maj, humerus)
with profunda brqachii at spiral groove
pierces lateral intermuscular septum
passes between heads of SUPINATOR
Superficial branch - sensory
