BIO SCI 38 Lecture Notes - Lecture 4: Behavioural Genetics, Optogenetics, Classical Conditioning
10 Jan 2020
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Document Summary
Cajal"s careful and more detailed anatomical descriptions, together with his strong writings, refuted the idea that nerve cells were linked in a continuous network. This led to the now accepted view that neurons are truly independent, genetically derived units that are composed of (a) a cell body or soma, (b) dendrites, and (c) a single axon. Cajal figured out the logic of the brain"s wiring diagram. Axons could travel short or long distances but they always terminated at specific locations among fields of dendrites. Axon endings were contiguous with dendrites but not continuous (fused) with them. The neuron doctrine the basis of modern neuroscience. The neuron is an anatomical unit the fundamental structural and functional unit of the nervous system. The neuron is composed of three parts: cell body, dendrites, and axons. Neurons are discrete cells that are not continuous with other cells. The points of connection between neurons are called synapses.
