01:830:310 Lecture Notes - Lecture 6: Dorsal Root Ganglion, Christopher Reeve, Cranial Nerves
30 Jul 2016
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Document Summary
09. 21. 15 neuropsych lecture 6 - spinal cord & cranial nerves (2) A motor neuron of the peripheral nervous system. Cell body is located in spinal cord. Sensory neuron of the pns sending afferent information to the spinal cord from the skin. Cell body in dorsal root ganglion - a cluster of nerve cell bodies (a ganglion) in a posterior root of a spinal nerve. Tactile stimulation - light touch, painful stimulus, thermal stimulus. A nerve is a bundle of axons from many neurons. Therefore, a nerve is a collective targeting of information. In brain - gray matter is located in the middle. In spinal cord - gray matter is located in the middle with white matter surrounding it. The higher up on spinal cord the damage is, worse the consequences. Paraplegic - loss of control over lower limbs. Quadriplegic/tetraplegic - loss of control over all limbs. Decussation - crossing (each hemisphere of brain runs opposite side of body)
