1. Brachial Plexus
   1. nerve roots C5-T1
   2. ennervation of upper extremity
   3. hoppenfeld
      1. C5
         1. ant upper arm
            1. deltoid
            2. biceps
            3. may present w/ shoulder pain but normal mobility
      2. C6
         1. wrist extensors
         2. brachioradialis
         3. thumb & index
         4. 'tennis elbow', lateral elbow pain
      3. C7
         1. triceps
         2. wrist flexors
         3. middle finger
      4. C8
         1. interoscie muscles
         2. finger flexors
         3. pinky & ring fingers
      5. TI
         1. interossei
         2. medial aspect of elbow
         3. 'overuse' injuries (not tennis elbow)
2. ANSA Cervicalis
   1. cervical plexus
   2. C1-C5: communicate in 'loops'
   3. direct relation to cranial nerves
      1. 9
      2. 10: vagus - parasympathetics
      3. 11
      4. 12: hypoglossal
   4. trigeminal nerve goes as far as C5
   5. pain
      1. post upper neck - C2-C4
      2. external ear - vagus nerve
      3. facial - trigeminal
      4. pain going from neck, up & into cranium - C1-C4
3. ANS
   1. primary fnc of sympathetic ganglions = arteries
   2. Sous-sujet 2