BIOM 3000 Lecture Notes - Lecture 6: Conus Medullaris, Dorsal Root Ganglion, Lower Motor Neuron

• School: University of Guelph
• Department: Biomedical Sciences
• Course: BIOM 3000
• Professor: Carolyn Creighton

Document Summary

From last class embryologically - the ventricular system represents the neural canal. By the end of the lecture, students will be able to: describe the morphology & functional organization of the spinal cord, describe the three major ascending and descending tracts, explain the consequences of a given spinal cord injury. Nervous system wiring principles : parts of the nervous system are interconnected in systemic ways especially true of the spinal cord, no rule is absolute exceptions to the rules, more like guidelines . Somatotopic maps for sensory system for motor system. Spinal cord anatomy vertebral column - sig. longer than the spinal cord: extends from brain stem to vertebral level l1/l2, ends at the conus medullaris. 31 different segments: segments tapering of the s. c, cervical (5) Eight cervical segments*** not 5: thoracic (12, lumbar (5, sacral (5, coccygeal (1) 1st cervical nerve leaves above the 1st cervical vertebrae. 8 nerve exits from the spinal cord between.