HUBS1416 Lecture Notes - Lecture 1: Myelin, Extracellular Fluid, Spinal Cord
12 Oct 2018
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Name the parts of a generalised neuron & indicate the input, output and integration areas of the neuron. A single neuron transmits electrochemical messages called nerve impulses or action potentials to other neurons and effectors (muscles or glands). A neuron (nerve cell) is not the same as a nerve. A nerve is a bundle of axons (neurons) wrapped in connective tissue. Cell body (or soma): contains relatively large nucleus with a prominent nucleolus and produces proteins needed for other parts of the neuron. Dendrites: [input] highly branched finger-like" projections that receive information from other. Axons: [integration] long nerve fibres that are capable of propagating electrical impulses known as action potential through them from cell body to axon terminal (*electrical impulses rarely travel the other way). Axon terminal: [output] nerve endings that make synaptic contacts with other neurons and effector cells, they also contain various kinds of neurotransmitters (chemicals which convey the message across the synaptic space).
