BIOL 1002 Chapter : Bio 1002 Chapter 38 Nervous System
Document Summary
What are the differences between hormone communication and & nervous cell communication: distance, number of cells contacted, speed. What is the nerve cell (neuron) structure & function: receive info, integrate info, conduct signal to output terminal, transmit signal to other cells, coordinate their metabolic activities. What are the neurons 4 distinct parts: dendrite, cell body, axon, synaptic terminal. What are a tangle of fibers that branch from the cell body & receive info from environment & convert info to electrical signals: dendrites. What receives various signals from dendrites & produces an action potential (output signal) & coordinates metabolic activity of cell: cell body. What is a long thin fiber extending form the cell body & carries the action potentials to output terminals: axon. What are axons are bundles together into: nerves. What is the insulating layers of membranes the axon is wrapped in: myelin. What are the naked areas where myelin is interrupted at intervals called: nodes.
