All About SCALP. Blood Supply+Nerve Supply+Venous Drainage + Lymphatic Drainage and Structure

1. SCALP
By- Achal Sharma

2. INTRODUCTION
It is a Soft tissue that
Covers the Cranial Vault

3. EXTENT OF SCALP
1. ANTERIORLY : Supraorbital Margins
2. POSTERIORLY : External Occipital Protuberance and Superior Nuchal Lines
3. ON EACH SIDE : Superior Temporal Lines

4. STRUCTURE
• Conventionally, Superficial Temporal
Region is studied with the Scalp.
• Scalp is made up of FIVE Layers:
1. Skin
2. Superficial Fascia
3. Epicranial Aponeurosis
4. Loose Areolar Tissue
5. Pericranium

5. 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

6. VENOUS DRAINAGE OF SCALP

7. 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.

8. NERVE SUPPLY
• The Scalp and Temple are supplied by TEN nerves on each side.
• IN FRONT OF AURICLE :
 Sensory Nerves -
1. Supratrochlear
2. Supraorbital
3. Zygomaticotemporal
4. Auriculotemporal
 Motor Nerve –
1. Temporal Branch of Facial Nerve
 BEHIND THE AURICLE :
 Sensory Nerves –
1. Posterior Division of Great Auricular Nerve
2. Lesser Occipital Nerve
3. Greater Occipital Nerve
4. Third Occipital Nerve
 Motor Nerve –
1. Posterior Auricular Branch of Facial Nerve