ANP 1106 Lecture Notes - Lecture 10: Dura Mater, Tentorium Cerebelli, Arachnoid Mater

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Jackie Carnegie

Document Summary

Spinal cord: divided into parts of vertebrae cervical, thoracic, lumbar, and sacral spinal nerves. 1st, 2nd lumbar vertebra for lumbar puncture: taking cerebrospinal fluid. Gives 2 way conduction system: major reflex center & initiates complex patterns of motor activity. Cervical enlargements - responsible for supplying nerves to the upper limb. Lumbar enlargements - responsible for supplying nerves to the lower limb. Cauda equina: lower lumbar & sacral nerves travel down vertebral canal & come out at different levels, nerves of spinal cord travel down to form this cluster of nerves (roots) The collection of nerve roots at the inferior end of the vertebral canal. Gray matter horns: anterior(ventral) horns: nerve cell body of somatic motor neurons axons exit by ventral roots. Lateral(dorsal) horns: sympathetic motor neurons to visceral organs axons exit by ventral roots. H-shaped dark area - made up of cell bodies, dendrites, & unmyelinated axons. Largest levels of cervical and lumbar enlargement since it carries the.