BIOL 141 Lecture Notes - Lecture 8: Axon Hillock, Spinal Cord, Electrophysiology
Document Summary
Nervous system introduction: the nervous system is a communication system. Includes all neural tissue in the body: uses electrical impulses to communicate, neuron (nerve cell, basic functional unit of the nervous system = neuron, communicates, controls body processes. Integrates information: what is composed of neurons and other neural tissue, brain, spinal cord, nerves, sensory structures, examples, glia (glue, supporting structures, vessels connective tissues, etc. The neuron: functional unit = neuron, neuron anatomy, dendrites, body (soma, axon hillock, the trigger zone, axon, axolemma, specialized plasma membrane, telodendria, synaptic (axon) terminals. Neurons communicate: dendrites receive information, decisions made at axon hillock. Integration of information: axon delivers information, terminals send message to next cell via the synapse, presynaptic cell, delivers information, postsynaptic cell, receives information. Functional classes of neuron: afferent (sensory) neurons, specialized cells to detect stimuli, often called receptors, start in pns, travels to the cns, functions to deliver information about, environment, condition of the body.
