HLSC 2F95 Lecture Notes - Lecture 6: Arachnoid Mater, Subarachnoid Space, Myelin

• School: Brock University
• Department: Health Sciences
• Course: HLSC 2F95
• Professor: Rebecca Mcpherson

Document Summary

Characteristics: controls and adjusts the activity of the body, provides swift but brief responses, the nervous system includes, cns, brain and spinal cord, pns, tissue outside of cns, afferent and efferent divisions. Overview: cns, responsible for integrating, processing, and coordinating sensory input and motor output. Structural classification of neurons: anaxonic, bipolar, pseudouni polar, multipolar. Neuronal organization circuits: divergence, convergence, serial processing, parallel processing, reverberation. Anatomy of a peripheral nerve: connective tissue layers, epineurium covering peripheral nerve, perineurium (one fascicle, endoneurium, blood vessels, peripheral nerve, fascicle, myelinated axon (schwann cell) Spinal cord: conducts nerve impulses to and from the brain, processes some sensory information to allow reflex action. Integrates and processes information: can function with the spinal cord, can function independently of the spinal cord, spinal cord. Integrates and processes information: can function with the brain, can function independently of the brain. Features of the spinal cord: transverse view, white matter, grey matter, central canal, anterior median fissure, posterior median sulcus.