![]() ![]() A list of the dermatomal segments and the area they supply is provided below. The ophthalmic division accounts for the upper third, maxillary division supplies the middle third, and the mandibular division covers the inferior third of the face. The second is that the dermatomes of the face are provided by the trigeminal nerve (CN V). The first is that C1 nerve roots do not contribute to a dermatome segment. There are two caveats to the dermatome principle. Scars, wasting, involuntary movements, fasciculations, tremors Introduction & informed consent, adequate exposure, inspect for SWIFT, pain, light touch, temperature, vibration sense, proprioception, graphesthesia & stereognosis, Romberg's test Spinothalamic, dorsal column, spinocerebellar, cuneocerebellar, spinotectal, spino-olivary Key facts about the clinical examination of the sensory pathway Dermatome Subsequently, the article will go on to discuss the examination of the common sensory modalities and what signs are considered abnormal. This article will first review the dermatome maps and ascending spinal tracts as a solid understanding of both is creates an invaluable foundation. The two systems work synergistically to provide optimum perception and response to the ever-changing external environment. As a result, it is equally important for clinicians to understand the inner workings of the sensory pathway, how it can be assessed, and what are the signs of sensory dysfunction. Without adequate sensory input, appropriate motor responses could not be generated. Like the motor system, the sensory pathway plays an important role in the transmission and interpretation of environmental stimuli. ![]()
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