Cells of the nervous system, called nerve cells or neurons, are specialized to carry messages through an electrochemical process. electrical excitable cell .
Therefore, when a signal reaches the relay neuron from the sensory neuron, the relay neurons will directly send a signal to the motor neurons.   The main function of neuron cells are to carry signals.   There are three types of neurons. Sensory, relay, and motor neuron. Sensory neurons carry signals from the r … eceptors in our body (e.g. thermal, pressure etc.) to the relay neurons, which are found in our spinal cord. Relay neurons then send signals along the spinal cord to the brain.  Cells of the nervous system, called nerve cells or neurons, are specialized to carry messages through an electrochemical process. The human brain has approximately 100 billion neurons. To learn how neurons carry messages, read about the action potential. Neurons come in many different shapes and sizes. Some of the smallest neurons have cell bodies that are only 4 microns wide. Some of the biggest neurons have cell bodies that are 100 microns wide. (Remember that 1 micron is equal to one thousandth of a millimeter!). However, neurons differ from other cells in the body because: 1  Neurons have specialize cell parts called dendrites and axons. 2  Neurons communicate with each other through an electrochemical process. 3  Neurons contain some specialized structures (for example, synapses) and chemicals (for example, neurotransmitters). Neuron is the main cell of the Nervous System. It is an electrical excitable cell that is responsible for the transmision of the nerve impulse. With it, they process (in the brain, ganglia and spinal cord) and transmit information. A human brain has 100.000 millions of neurons.  Action potentials occur in several types of animal cells, called excitable cells, which include neurons, muscle cells, and endocrine cells, as well as in some plant cells. In neurons, they play a central role in cell-to-cell communication. In other types of cells, their main function is to activate intracellular processes. In muscle cells, for example, an action potential is the first step in the chain of events leading to contraction. About Neurons. The basic working unit of the nervous system is a cell called a neuron. The human brain contains about 100 billion neurons. A neuron consists of a cell body containing the nucleus, and special extensions called axons (pronounced AK-sonz) and dendrites (pronounced DEN-drahytz). Neurons communicate with each other using axons and dendrites. Neurons (Nerve Cells). A type of cell that receives and sends messages from the body to the brain and back to the body. The messages are sent by a weak electrical current. Also called nerve cell. NIH-National Cancer Institute. A neuron (/ˈnjʊərɒn/ NYEWR-on or /ˈnʊərɒn/ NEWR-on; also known as a neurone or nerve cell) is an electrically excitable cell that processes and transmits information through electrical and chemical signals. These signals between neurons occur via synapses, specialized connections with other cells. Neurons can connect to each other to form neural networks. Neurons are the core components of the brain and spinal cord of the central nervous system (CNS), and of the ganglia of the peripheral nervous system (PNS). Neurons & the Nervous System. The human nervous system consists of billions of nerve cells (or neurons)plus supporting (neuroglial) cells. Neurons are able to respond to stimuli (such as touch, sound, light, and so on), conduct impulses, and communicate with each other (and with other types of cells like muscle cells). The nucleus of a neuron is located in the cell body. Extending out from the cell body are processes called dendrites and axons. A typical neuron consists of a cell body (soma), dendrites, and an axon. The term neurite is used to describe either a dendrite or an axon, particularly in its undifferentiated stage. These signals between neurons occur via synapses, specialized connections with other cells. Neurons can connect to each other to form neural networks. Neurons are the core components of the brain and spinal cord of the central nervous system (CNS), and of the ganglia of the peripheral nervous system (PNS). At the majority of synapses, signals are sent from the axon of one neuron to a dendrite of another. There are, however, many exceptions to these rules: neurons that lack dendrites, neurons that have no axon, synapses that connect an axon to another axon or a dendrite to another dendrite, etc. These signals between neurons occur via synapses, specialized connections with other cells. Neurons can connect to each other to form neural networks. Neurons are the core components of the brain and spinal cord of the central nervous system (CNS), and of the ganglia of the peripheral nervous system (PNS).
http://www.answers.com/Q/What_type_of_cell_is_a_neuron https://faculty.washington.edu/chudler/cells.html http://neuroscience.wikia.com/wiki/Neuron https://en.wikipedia.org/wiki/Action_potential http://www.ncbi.nlm.nih.gov/pubmedhealth/PMHT0024269/ https://en.wikipedia.org/wiki/Neuron http://people.eku.edu/ritchisong/301notes2.htm https://en.wikipedia.org/wiki/Neuron https://en.wikipedia.org/wiki/Neuron
a neuron is what type of cell