Fig. 9. Diagram of cervical plexus and its branches.

A = greater auricular nerve, B = lesser occipital nerve, C = transverse cervical nerve, C2–C5 = 2nd to 5th cervical nerves, D = supraclavicular nerve, DI = intermediate branch, DL = lateral branch, DM = medial branch, E = phrenic nerve, EJV = external jugular vein, F = ansa cervicalis, G = trapezius muscle, H = platysma, I = cervical branch of facial nerve, J = parotid gland, K = SCM muscle, XI = spinal accessory nerve, XII = hypoglossal nerve