This is a typical example of a dermatome model. A dermatome is the area of the skin supplied by a single, specific spinal nerve root. The bands of skin run horizontally on the trunk and lengthwise on the limbs and are distinguished in dermatome models and charts as different colours. These anatomical ‘maps’ are valuable in locating various sensations in patients with neurological disorders. The eminent English neurophysiologist Charles Sherrington (1857-1952) is credited with identifying the dermatomes. He began his lifelong interest in neurology as a young medic after attending a meeting which discussed Sir Charles Bell’s experimental studies on the functions of the nerves. |