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The Scalp BY: DR. Yahya h. Alfarra. The Scalp. Definition layers Muscle of scalp nerve supply of scalp Arterial supply of scalp Veins of scalp. The scalp فروه الرأس. Definision : the tissue covering the skull which is formed of multiple layers. Extention :
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The Scalp • Definition • layers • Muscle of scalp • nerve supply of scalp • Arterial supply of scalp • Veins of scalp
The scalpفروه الرأس • Definision: the tissue covering the skull which is formed of multiple layers.
Extention: eye brows (ant), highestnuchal line(post) temporallines(laterally). Note: To assist one in memorizing the names of the five layers of the scalp, use each letter of the wordSCALPto denote the layer of the scalp.
Layers 1- Skin 2- Connective tissue 3- Aponeurosis Note: Epicranial aponeurosis=occipitofrontalis Muscle+ the galea aponeurotica . 4- Loose connective tissue 5- Periosteum Note: - the superficial 3 layers are firmly united to each other and move as one layer.
Occipitofrontalismuscle: formed of 4 bellies 2 occipital bellies (behind), 2 frontal bellies (infront) and the galea aponeurotica . between the frontal & occipital bellies. Muscles of the scalp
**2 frontal bellies: lies anteriorly origin: from epicranial aponeurosis Insertion: into skin of forehead **2 occipital bellies: lies posteriorly origin: from highest nuchal lines insertion: into epicranial aponeurosis
nerve supply: facial nerve (temporal & post. Auricular branches) Action:elevation of the eyebrows (surprise).
5 Nerves in front of auricle : 4 sensory + 1 motor 5 Nerves behind of auricle : 4 sensory + 1 motor Nerves of the scalp
5 artries enter the scalp on each side: 3 infront of auricle & 2 behind the auricle Arterial supply of the scalp
Supratrochlear and supraorbital arteries (from ophthalmic arteries ) • Superficial temporal artery (terminal branch of ECA) • Posterior auricualr artery (ECA) • Occipitral artery (ECA)
Supratrochlear + supraorbital viens facial vien * Superficial temporal + maxillary vien retromandibualr vien * Post. Auricualr vien + post. Division of retromandibualr vien external jugualr vien *The Occipital vien. Viens of the scalp