PSYC 2015 Chapter Notes - Chapter 1: Motor Neuron, Sensory Neuron, Schwann Cell
Document Summary
Neurons- receive information and transmit it to other cells. Nervous system consists of glia and neurons. Membrane- surface of the cell: separates the inside and the outside. Mitochondrion- structure that performs metabolic activities, providing the energy that the cell uses for all activities: requires fuel and oxygen. Ribosomes- the sites at which the cell synthesis of new protein molecules: proteins provide building materials for the cell and facilitate chemical reactions. Some freely float around the cell and some are bound to the er. Er- tubes that transport newly synthesized proteins. Motor neuron-receives excitation through its dendrites and conducts impulses along its axon to a muscle. Sensory neuron- specialized at one end to be highly sensitive to a particular type of stimulation. Dendrites- branching fibers that get narrower near their ends: surface is lined with synaptic receptors, where the dendrite receives information from other neurons. Cell body (soma)- contains the nucleus, ribosomes, and mitochondria.
