02-21-08 Psych 115 Lec 14 - Psych 115 Lec 14 Sensory...

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02-21-08 Psych 115 Lec 14 Sensory information From all the parts of the body are conveyed through the spinal nerve. Each sensory surface is applied by just that particular body part. C5 region is only associated with cranial V. Each of the receptor field on the body is referred to as a Dermatome . “tome” means a cut or a section. 31 Spinal nerve, gives 31 dermatome. Except your face (related to cranial nerve), and part of the head, the rest is divided to parts, referring back to a certain section of dermatome. All of the dorsal root is related to T5 . If you use a pencil, point at each section from T1-T12, you most likely cannot sense that object when it’s poking T5. =/ Spinal cord injury At lumbar: if the nerve is damaged, it cannot feel anything at the thigh. Spinal nerve Sensory receptor – spinal nerve divide to dorsal root and ventral root. Dorsal root contain the cell body at the ganglion. Gray matter consist of cell body and dendrites, while matter contain myelin.
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  • Fall '07
  • shaine
  • dorsal root, Dorsal Column

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