Page 349 - Clinical Anatomy
P. 349

ECA6  7/18/06  6:54 PM  Page 334






                 334  The central nervous system



















                                                                              Fig. 234◊The spinal cord
                                                                              —transverse section
                                                                              through a thoracic
                                                                              segment.































                                                                              Fig. 235◊The relationship
                                                                              between the spinal cord
                                                                              and the vertebrae in the
                                                                              3-month fetus and in the
                                                                              newborn child.


                   The more important long tracts in the white matter will now be dealt
                with.

                Descending tracts (Fig. 237)

                1◊◊The pyramidal (lateral cerebrospinal or  crossed motor)  tract. The motor
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