What do dendrites do?


Dendrites are a part of the central nervous system that receive input from nerve cells, which are sometimes called. Multiple fibers called dendrites extend in a branchlike formation from the cell body of a neuron. When the postsynaptic terminals, or receptors, at the end of a dendrite receive neurotransmitters released by other neurons, an electric signal is transmitted through the dendrite to the cell body of the neuron.

Dendrites receive nervous system signals through synapses, which form the connections between neurons where the axon terminal of one nerve cell ends near the dendrites of another nerve cell. Nerve cells do not physically touch each other. Instead, they communicate through the use of neurotransmitters that travel across the space called the synaptic cleft between the cells. An electrical signal travels down one neuron's axon and triggers the release of chemical compounds called neurotransmitters. Neurotransmitters move across the synaptic cleft and connect to the receptors on the other nerve cell. This triggers an electrical impulse that then travels from the dendrites to the cell body.

The typical neuron has thousands of dendrites, but it is possible for a nerve cell to have only one dendrite. Dendrites are relatively short, and they have spines that provide more surface area for other neurons to synapse with. Their branch-like formation inspired the name "dendrite," which means "tree" in Greek.

Explore this Topic
Dendrites are the tree-branch like extensions of the neurons found in different parts of the human body. Their function is that they compose most of the receptive ...
There are three main types of drainage patterns and they are dendritic, radial and trellised. The dendritic drainage pattern is similar to a tree that has branched ...
The five kinds of snow crystals are needles, which is needle shaped. There is the hollow columns, the sector plates, the stars and the dendrites. ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com