Scalp

 Scalp :-

            The scalp  is a soft tissue which covers calvaria of  the skull.

Extent :

           * Front Supra orbital margin

           * Behind external occipital

           * Protuberance & superior nuchal line 

           * Side zygomatic arch on each side

Scalp consist of 5 layers:

1. Skin
2. Connective tissue 
3. Apponeurosis & Occipitofrotalis muscles 
4. Loose connective tissue 
5. Pericarnium or outer periosteum of the skull. 

Nerve Supply :

               10 nerves supply each side of the scalp 5 in front & 5 behind the auricle.

Nerve on front of auricle :

1. Supra trochlear 
2. Supra - orbital both are branches of ophthalmic division of trigeminal nerve
3. Zygomatico - temporal nerve Maxillary
4. Temporal branch of facial nerve 
5. Auriclo - temporal nerve ( Sensory)  - Mandibular

Nerves behind the auricle :

1. Posterior branch of great auricular nerves ( Sensory) - C2
2. Posterior auricular branch of facial nerve. 
3. Lesser occipital nerves - C2
4. Greater Occipital nerves - C2
5. Third occipital (Sensory) -C3

Arterial Supply :-

                  Five sets of arteries supplies on each side -3 in front and 2 behind the auricle. 

Arteries in front of auricle :

1. Supra -  trochlear (one of terminal branch) 
2. Supra - orbital (Both branches of internal carotid artery) 
3. Superficial temporal artery. 

Arteries in behind the auricle :

1. Posterior auricular artery 
2. Occipital artery.

  

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