what is a neuron? describe its structure & function.
Experts & Friends pleeeeeeeeeease answer as fast as possible........tom. is my science exam.......
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A neuron (also known as a neurone or nerve cell) is a cell that carries electrical impulses. Neurons are the basic units of the nervous system and its most important part is the brain. Every neuron is made of a cell body (also called a soma), dendrites and an axon. Dendrites and axons are nerve fibres.
Sensory neurons carry signals from sense organs to the spinal cord and brain.
Relay neurons carry messages from one part of the CNS.
Motor neurons carry signals from the CNS to muscles, motor neurons are connected to the relay neurons. The signal passes between the neurons via synapses. Synapses are microscopic voids between cells where chemicals are released from the axon terminal of one cell to specialized chemical receptors on the dendrite of the receiving cell.
Sensory neurons carry signals from sense organs to the spinal cord and brain.
Relay neurons carry messages from one part of the CNS.
Motor neurons carry signals from the CNS to muscles, motor neurons are connected to the relay neurons. The signal passes between the neurons via synapses. Synapses are microscopic voids between cells where chemicals are released from the axon terminal of one cell to specialized chemical receptors on the dendrite of the receiving cell.
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