All About SCALP

SCALPBy- Achal Sharma

INTRODUCTION

It is a Soft tissue that Covers the Cranial Vault

EXTENT OF SCALP

1. ANTERIORLY : Supraorbital Margins

2. POSTERIORLY : External Occipital Protuberance and Superior Nuchal Lines

3. ON EACH SIDE : Superior Temporal Lines

STRUCTURE

• Conventionally, Superficial Temporal Region is studied with the Scalp.

• Scalp is made up of FIVE Layers:1. Skin2. Superficial Fascia3. Epicranial Aponeurosis4. Loose Areolar Tissue5. Pericranium

ARTERIAL SUPPLY OF SCALP

• In front of Auricle, the scalp is supplied by :

Supratrochlear Supraorbital Superficial Temporal Arteries• Behind the Auricle, the scalp is

supplied from before backwards by the :

Posterior Auricular Occipital Arteries

Branch of Opthalmic Artery Branch of

ICA

Branch of ECA

VENOUS DRAINAGE OF SCALP

LYMPHATIC DRAINAGE

• Anterior part drains into Pre-Auricular or Parotid Lymph Nodes, situated on the surface of Parotid Gland.

• Posterior part drains into Posterior Auricular or Mastoid and Occipital Lymph Nodes.

NERVE SUPPLY

• The Scalp and Temple are supplied by TEN nerves on each side.• IN FRONT OF AURICLE : Sensory Nerves -1. Supratrochlear2. Supraorbital3. Zygomaticotemporal4. Auriculotemporal Motor Nerve –1. Temporal Branch of Facial Nerve BEHIND THE AURICLE : Sensory Nerves –1. Posterior Division of Great Auricular Nerve2. Lesser Occipital Nerve3. Greater Occipital Nerve 4. Third Occipital Nerve Motor Nerve –1. Posterior Auricular Branch of Facial Nerve

Thank You