However most neurons also do get a smaller number of synapses coming in to the soma. Most of the synapses are actually coming in Have more surface area, to form more synapses. The reason it's branched, is just so that it can Neuron is contacting and communicating with theĭendrite of this neuron, and there could be many, many synapses on a dendrite, and part of Most of those synapsesĬome in to the dendrites, so that the axon of another Terminals, and the typical neuron receives information through thousands of synapses. Of different target cells through its axon Neuron can have a massive number of connections through synapses. Where there is a gap, because they are far and away more common than electrical synapses, which are fairly rare, at least in humans. I'm just gonna talk about the chemical synapses, The cytoplasm of the twoĪre really connected, and ions can flow directly from the neuron into the target cell. And with this type of synapse, the cells are actually physically connected, so that the axon terminal physically connects with the membrane of the target cell, and there are special channelsĬalled "gap junctions" that actually let the inside of the neuron communicate with the The other type of synapse is called an electrical synapse. It releases molecules, or chemicals, at the synapse that cross from the axon terminal to the membrane of the target cell. That has a gap is called a chemical synapse, because Smaller gap than I've drawn, and the other one doesn't have a gap. Synapses, one of which has a gap like I've drawn here, although it's actually a much So synapses are these spots, where the axon terminals of a neuron are contacting their target And these cells may be another neuron, they might be a muscleĬell, or they may be a gland cell, and some neurons even have axon terminals that end on blood vessels to secrete substances Of target cells that a neuron may contact with the synapse. And then let me justĭraw some target shapes to represent the types I'll just draw a few here, but it can have many, many terminals. Process, until it reaches the end, and then it branches into multiple terminals, and Of neurons in blue, one dendrite and here's another dendrite. Synapses are where neurons contact and communicate with their target cells, and the word "synapse"Ĭomes from Greek words meaning "to clasp together." So let me start by showing where synapses happen, so first I'll draw the soma of a neuron in red, and a few dendrites, these branching processes In this video, I want to talk about the structure of the synapse.
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