BIO 211 Lecture Notes - Lecture 24: Filum Terminale, Conus Medullaris, Lumbar Puncture
1 Dec 2020
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Document Summary
Spinal cord is c component of the central nervous system while the spinal nerves are part of the. Spinal cord is involved with reflexes which are involuntary, stereotyped responses to stimuli. Spinal meninges: continuous with the cranial meninges. Csf found in subarachnoid space is produced in brain and acts like a protective cushion. Superior end of central canal of spinal cord is continuous with fourth ventricle. Denticulate ligaments: prevent lateral movement of sc, secure sc to bony walls of vertebral column, and protect sc against sudden displacement that could result in shock. membranes that provide physical stability and shock absorption for the spinal cord. Spinal meninges (3 layers): pia mater: innermost layer, meshwork of elastic and collagen fibres, bound to underlying nervous tissue, arachnoid mater: middle layer, simple squamous epithelium, network of collagen and elastic fibres connecting to pia mater.
