PSYC 100 Lecture Notes - Lecture 3: Cerebrospinal Fluid, Myelin, Axon Terminal
20 Oct 2020
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Document Summary
Are individual cells in the nervous system that receive, integrate, and transmit information (activity in the cell) (from quiz) all neurons receive and send information. Roughly 86 billion neurons in the human brain. Speeds up the transmission of signals that move along axons. If an axon"s myelin sheath deteriorates, its signals may not be transmitted effectively: multiple sclerosis - the loss of muscle control. Path of info: dendrites soma axon. Are cells found throughout the nervous system and they provide various types of support for neurons (greek word for glue ) Provide protection to the brain in 3 ways: cerebral spinal fluid - cushions the brain during an impact, blood-brain barrier - protects the brain from some viruses and drugs, contribute to the immune system of the brain. Provide the neurons with nutrients and energy from the blood. Holding the neurons in place and forming scar tissue if the brain is injured.
