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.Continue Reading
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.Learn more about Nerves
According to Neurogenetics at the University of Tennessee Health Science Center, the human body has 95 to 100 billion neurons or nerve cells. The brain alone has at least 85 billion of these cells, although estimates go as high as 1 trillion.Full Answer >
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The brain is made up largely of neurons, or nerve cells, blood vessels and glial cells. Glial cells create a supporting structure for the brain. The brain is about 60 percent fat.Full Answer >
The nervous system functions to process input from sensory receptors, transfer and interpret impulses and to control the functions of body's muscles and organs. The nervous system is comprised of nerves made up of specialized cells known as neurons.Full Answer >