A dermatome is the area of skin supplied by the sensory fibres in a given somatic nerve
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What is the sensory nerve supply to the face?
Great auricular nerve (C2,3) and Trigeminal nerve (CN V)
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What are the 3 divisions of the trigeminal nerve?
ophthalmic, maxillary and mandibular
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The nerves in the ophthalmic division?
supra orbital nerve, supra trochlear nerve, infra trochlear nerve, lacrimal nerve, external nasal nerve
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The nerves in the maxillary division ?
infra orbital nerve, zygomatico temporal nerve, zygomatico facial nerve
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The nerves in the mandibular division
mental nerve, long buccal nerve, auricolo- temporal nerve
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CLINICAL TESTING OF THE SENSORY COMPONENT OF CN V: THE TRIGEMINAL NERVE
Ask the patient to close their eyes. Gently brush the skin in each dermatome with a fine tip of cotton wool. Ask the patient to tell you when they feel their skin being touched. Compare the 2 sides.
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what is the foramen for: a) the supra orbital nerve, b) infra orbital nerve, c) mental nerve
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