Scalp
Innervation
The scalp receives its cutaneous innervation as follows:
- Posterior region of the scalp. Innervated by branches of the cervical plexus, which are principally derived from C2 and C3 (lesser occipital and greater occipital nerves).
- Anterior region of the scalp. Innervated by the supraorbital and supratrochlear nerves, which are derived from the ophthalmic division of the trigeminal nerve (CN V-1).
- Lateral region of the scalp. Innervated by branches of the maxillary (CN V-2) and mandibular (CN V-3) divisions of the trigeminal nerve (the zygomaticotemporal and auriculotemporal nerves, respectively).
Reference