A neuron is a nerve cell that characteristically has three parts: dendrites, cell body, and axon. (Human Biology, Sylvia Mader 10e) Neurons send messages electrochemically, meaning that chemicals cause an electrical impulse.
The dendrites are the part of the neuron that receive and carry the impulse to the cell body.
The cell body contains the nucleus and the dendrite and axon extend from this.
The axon carries impulse away from the cell body to the dendrite.
All neurons have the same basic structure. There are three total neurons they are sensory neurons, interneurons, and motor neurons.
Sensory neurons takes nerve impulses from a sensory receptor to the central nervous sysem. They are what detect changes in the environment.
Interneurons are located in the central nervous system. They receive input from the sensory neuron and also from other interneurons in the central nervous system.
Motor neurons are what takes nerve impulses away for the central nervous sytem to a muscle or gland.
Nerve impulse is what conveys the information within the nervous system. The conduction of an nerve impulse is all or nothing. The intensity of a message is determined by how many nerve impulses are generated in a specific time span.
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