Download - 07 03 14_scalp_ANKURSAXENA
SCALP
Dr. Ankur SaxenaAsst. Professor
Dept. of Anatomy,SGRR Institute of Medical & Health Sciences,
Dehradun, Uttarakhand, India
Scalp
• Covering of Neurocranium.• Extension:- – Supraorbital margins Anteriorly.– Highest Nuchal Line Posteriorly.– Down to the ears at the sides.
S = Skin.C = Connective Tissue.A = Aponeurosis With Muscles.L = Loose Areolar Tissue.P = Pericranium.
(Connective tissue)
• Skin –
– Thickest– Hairiest & High concentration of Sebaceous glands.– Insertion of Muscle fibers.– Adhered by Connective tissue underneath to the
Muscles & Aponeurosis.– Nerves & Vessels run in this layer.
• Occipitofrontalis = Occipitalis & Frontalis• Intervening Aponeurosis = Epicranial aponeurosis
= Galea Aponeurotica (Ex. Occ. Pro + Nuchal lines)• Occipitalis Frontalis
• Highest nuchal line Front of aponeurosis
• Into the Aponeurosis Orb. Oculi+ Eyebrow
Post. Auricular N Temporal N.
• Beneath the Muscle & Aponeurosis, Loose areolar tissue.• Avulsion.• Subaponeurotic space extends down beneath
Orbicularis oculi into the eyelids.
• Bleeding anywhere beneath the aponeurosis.
• Pericranium – Periosteum of the Vault.Loosely attached to the bone.Subperiosteal Hematoma.
• Vascular Supply- Arteries
External Carotid Internal Carotid Occipital Supratrochlear Posterior Auricular Supraorbital Superficial TemporalArterial wall attached to the dense connective tissue
Veins
Supraorbital + Supratrochlear
Angular Vein
Superficial Temporal Vein
Retromandibular Vein
Occipital Veins Plexus around Suboccipital Muscle
Vertebral Vein
Posterior Auricular Vein
External Jugular Vein(Behind the ear)
Lymphatic DrainageAnterior Posterior
Occipital Nodes
Posterior Auricular NodesPre-Auricular (Parotid) Nodes
Deep Cervical Chain
Nerve Supply• Posteriorly – Greater occipital Nerve (p C2) : Vertex– Third Occipital Nerve (p C3) : Posterior Scalp
Behind the ear : Lesser Occipital (a C2).Great Auricular nerve
Temple : Auriculotemporal Nerve. Zygomaticotemporal Nerve.
Forehead : Supratrochlear nerve. Supraorbital nerve.
APPLIED ANATOMY