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spinal cord

the part of the central nervous system that extends from the lower end of the medulla oblongata, at the base of the brain, through a canal in the center of the spine as far as the lumbar region. In transverse section, the cord consists of an H-shaped core of gray matter (see periaqueductal gray; anterior horn; dorsal horn) surrounded by white matter consisting of tracts of long ascending and descending nerve fibers on either side of the cord that are linked by the white commissure. The spinal cord is enveloped by the meninges and is the origin of the 31 pairs of spinal nerves. See also spinal root.

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Psychology term of the day

November 23rd 2024

helping model

helping model

a broadly based educational approach that has much in common with humanistic models in its emphasis on the development of the complete individual and the realization of a student’s full potential. The helping model is concerned with motor development, perceptual skills, cognitive development, emotional maturity, interpersonal skills, expression, creativity, and ethical values.