Scalp Anatomy
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The scalp has five layers - skin, deep connective tissue, aponeurosis, loose connective tissue, and periosteum. It is innervated by branches of the trigeminal nerve and cervical nerves and supplied by branches of the external carotid and ophthalmic arteries. The occipitofrontalis muscle allows movement and raising of the eyebrows. Lymph drains from the scalp to occipital, cervical, mastoid, parotid, preauricular, and submandibular lymph nodes.
Scalp Anatomy
- 1. Anatomy of SCALP S.S Hotchandani
- 2. Structure Part of Head. Extend from Superciliary arches anterior, to superior nauchal lines posterior. Made of 5 Layers
- 4. Layers of SCALP Skin Connective Tissue (Deep) Apo neurosis Connective Tissue (Loose) Periosteum
- 6. Muscles of SCALP Occipitofrontalis Origin • Occipital Process – Superior Nauchal Line • Frontal Process – Superciliary Arches Insertion • Both are Inserted in Epicranial Eponeurosis Nerve Supply • Facial Nerve Function • Move Scalp • Raise Eyebrows
- 7. Frontal Process Occipital Process
- 8. Innervations of SCALP SCALP is inerveted in two portions. Part of Scalp Anterior to Ear & Vertex of Skull. Part of Scalp Posterior to Ear & Vertex of Skull
- 9. Innervations of Part of SCALP anterior to Ear & Vertex of Skull Innervated by Branches of Trigeminal Nerve of Cranial Nerves. Branches Supratrochlear Nerve Supraorbital Nerve Zygomaticotemporal Nerve Auricotemporal Nerve
- 10. Innervation of Part of Skull Posterior to Ear & Vertex of Skull Innervated by Branches from C2 & C3 of Cervical Nerves. Branches Great Aurical Nerve Lesser Occipital Nerve Greater Occipital Nerve 3rd Occipital Nerve
- 12. Blood Supply of SCALP Arterial Venous
- 13. Arteries of SCALP Supplied by Branches of External Carotid & Ophthalmic Artery (Branch of Internal Carotid Artery)
- 14. SCALP Blood Supply via Branches External Carotid Artery Branches Superficial Temporal Posterior Auricle Occipital Artery These Branches Supply Posterior & Lateral Part of SCALP
- 15. SCALP Blood Supply via Branches of Ophthalmic Artery Branches Supratrochlear Supraorbital These Branches supply Anterior and Superior part of SCALP
- 17. Veins of SCALP Same route as Arteries of SCALP. Supratrochlear & Supraorbital join and forms Facial Vein Superficial Temporal forms Retromandibular vein Posterior Auricle form External Juglar Vein Occipital form Internal Juglar Vein
- 18. Lymph Drainage of SCALP It also follows same pattern of Arteries of SCALP. Lymph Nodes for Drainage of SCALP OccipitalNode Cervical Node Mastoid Node Parotid Node Pre-auricle Node Sub-Mandibular Node
- 20. SCALP Lymph Nodes with Area of Drainage Occipital & Cervical Node Both Drain form Occipital Region of SCALP Mastoid Node Drains from Posterior to Vertex of Skull Parotid & Pre-Auricle Node Drain form Anterior to Vertex of Skull Sub-Mandibular Node Drain from Fore Head.