Cervical Plexus (c1-c4)

Cervical Plexus (c1-c4)

1. C1

   • No Sensory

2. C2

   • Lessr Occipital C2
     • Pinna
     • Adjacent scalp
   • Inf Root
     • Ansa Cervicalis
       • Relationships
         • Supf to carotid sheath
         • Pass over int. jugular v.
       • Motor
         • All Infrahyoid M EXCPT thyroihiod (C1)
           • Sterno-thyroid
           • Sterno-hyoid
           • Omohyoid
       • Sensory
         • Accessory n.
           • Trapezius
           • SCM

3. C3

   • C2, C3
     • Greater Auricular Supf to ACM
       • skin of Ear
       • Angle of mandible
     • Transverse cutaneois Supf to SCM
       • upper part of neck

4. C4

   • Suprascapular C3, C4
     • Medial
     • Intermediate
     • Lateral
     • Upper chest
   • Phrenic
     • Relationship
       • Run Across
         • Scalenus Ant m.
       • Post-Lat
         • Int jugular v.
       • Deep to
         • Inf belly of omohyoid and SCN
       • crossed by
         • transverse cervical a.
         • Suprascapular a.
       • on left sid of
         • thoracic dusct
       • enter thoracic betw
         • Subclavian Vien and Artery

5. C5

6. Notes:

   • Cutaneous branch of skin of head
     • Upper - front
       • Opthalmic n.
     • Maxillary area
       • Maxillary n.
     • Mandible + cheek + temporal region
       • Mandibular n.

7. Hypoglossal n. XII

   • communication of the two
     • Sup Root
     • n. to geniohyoid
     • n. to thyrohoid

8. this side CUTANEOUS BRANCHES VEBTRAL RAMI

9. this side MUSCULAR bRANCHES DORSAL RAMI