BLG 700 Lecture Notes - Lecture 10: Dura Mater, Filum Terminale, Pia Mater

• School: Ryerson University
• Department: Biology
• Course: BLG 700
• Professor: Nancy Woodley

Document Summary

Chapter 14: spinal cord and spinal nerves (sections 14. 1-14. 5) central nervous system (cns) = brain and spinal cord. Peripheral nervous system = nerves and ganglia outside of cns: central role in communication between brain and rest of body, 12 pairs of cranial nerves and 31 pairs of spinal nerves and their ganglia. Provides longitudinal support to spinal cord cauda equine = numerous roots (origins) of spinal nerves extending inferiorly from the lumbosacral enlargement and conus medullaris. Meninges (fig 14. 2) = specialized membranes surrounding brain and spinal cord: provided protection, physical stability and shock absorption, dura mater = most superficial tough fibrous membrane. External and internal surfaces covered with simple squamous epithelium. Epidural space = space between dura mater and the periosteum of the vertebral canal caudal end blends with filum terminale lateral extensions cover spinal nerve roots contains spinal nerve roots, blood vessels, areolar connective tissue and adipose tissue.