12. Sensory Nerve of Scalp
Sensory Nerve Supply (Posterior to Auricle) Greater occipital nerve (Posterior ramus of C2): Supplies the occipital region up to the vertex. Lesser occipital nerve (Cervical plexus, C2/C3): Supplies the scalp behind the ear. Third occipital nerve (Posterior ramus of C3): Supplies the lower occipital region. Great auricular nerve (C2/C3): Supplies the scalp posterior to the ear.