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Dendrites can be thought of as extensions of the cell body which provide increased surface area at much lower cell volumes. For example, 97% of the surface area of a motor neuron (excluding the axon) is dendritic (Ulfhake and Kellerth The main function of the dendrite is to receive the nerve impulse or signals coming to form other synapses and forward it to the cell body. Dendrite signals or electrochemical messages are in the form of neurotransmitters, sent by other neurons through the special receptor present on the exterior of dendrites. There are three broad parts – a cell body, a long (sometimes very long) axon and axon terminals.

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An axon is one of two types of cytoplasmic protrusions from the cell body of a neuron; the other type is a dendrite. Axons are distinguished from dendrites by several features, including shape, length, and function. Some types of neurons have no axon and transmit signals from their dendrites. In some species, axons can emanate from dendrites known as axon-carrying dendrites.

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Many types of neurons have numerous dendrites spread around the cell body, each of which branch to form hundreds of synaptic connections, receiving input from multiple presynaptic cells; this is called the dendritic field, AKA the dendritic tree. Increasing surface area by enlarging the cell body would mean prohibitive increases in cell and brain volume. Dendrites can be thought of as extensions of the cell body which provide increased surface area at much lower cell volumes.

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While dendrites consistently move away from the soma, axons can double back on themselves, coming back  Essential idea: Neurons transmit the message, synapses modulate the message.

In neuron communication, it is these dendrites that receive the signals. An axon is one of two types of cytoplasmic protrusions from the cell body of a neuron; the other type is a dendrite.
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At classical synapses, a neuron's presynaptic terminal releases a chemical transmitter The target may be a dendrite, cell body, or axon of another neuron, or a  At the end of the axon, the electrical impulse sets off the release of These chemicals cross the gap, or synapse, and start a similar electric impulse in a dendrite of next This impulse travels from the dendrite to the cell body. A neuron is a specialized type of cell found in the bodies of all eumetozoans. neuron is divided into three parts: the soma or cell body, dendrites, and axon.

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Neurons, Axons, Dendrites, Synapses, and Memory: My Life: Dorta

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