NERVE SUPPLY OF SCALP

NERVE SUPPLY OF SCALP

NERVES IN FRONT OF AURICLE

A. SENSORY NERVE

- derived from trigeminal nerve ( 5^th cranial nerve )

	SUPRATROCHLEAR N SURAORBITAL N
Origin	branch from ophthalmic division of trigeminal N
Course	Leave orbit SUPRATROCHLEAR SURAORBITAL *smaller *reach scalp through superomedial angle of orbit. *bigger *reach scalp through supraorbital notch or foramen.
Supply	*anterior part of scalp *upper eye lid SUPRATROCHLEAR SURAORBITAL Skin of forehead, near the median plane. Skin of scalp till the lomboid sature.

	AURICULOTEMPORAL N
Origin	Mandibular division of trigeminal N
Course	*Leave upper end of parotid gland *pass upward in front of auricle -cross root of zygomatic arch.
Supply	*Skin of posterior part of temple. *upper 2/3 of lateral surface of auricle.

	ZYGOMATICOTEMPORAL NERVE
Origin	Branch from maxillary N
Course	Pass through zygomaticotemporal foramen
Supply	Anterior part of temple - side of scalp

B. MOTOR NERVE

	TEMPORAL BRANCH OF FACIAL NERVE
Course	*Leave upper part of parotid gland *cross zygomatic arch to reach the scalp
Supply	*frontal belly of occipitofrontalis muscle *upper part of orbicularis occuli muscle.

NERVE BEHIND AURICLE

A. SENSORY NERVE

NERVE	SUPPLY
Greater occipital nerve ( C2 )	Upper part of back of scalp
Lesser occipital nerve ( C2 )	*a small area of back of scalp - near upper part of auricle
Third occipital nerve ( C3 )	*lower part of back of scalp *upper part of back of neck
Great auricle nerve ( C2-C3 )	A small area of back of scalp -near the lower part of auricle

B. MOTOR NRVE

NERVE	SUPPLY
Posterior auricular branch of facial nerve	Occipital belly occipitofrantalis muscle

NERVE SUPPLY OF FACE

A. MOTOR SUPPLY – from facial nerve

- facial nerve enter the parotid gland

- it ends by dividing into 5 terminal branches

	Course	Supply
Temporal branch	Leaves upper end of anterior border of parotid gland.	*Frontal belly of occipito-frontalis M *Orbicularis occuli M
Zygomatic branch -upper -lower	*Emerge from anterior border of parotid gland *the muscle present between eye and mouth and the muscle of the nose.	Orbicularis occuli M
Buccal branch		*baccinator M *orbicularis oris M
Mandibular branch		*orbicularis oris M *muscle of lower lip
cervical branch	Emerge from lower end of parotid gland	Platysma

B. SENSORY SUPPLY

1. from trigeminal nerve

2. great auricular nerve ( C2-C3 )

- small area covering the angle of mandible

- the parotid gland