What is the differences between nicotinic and muscarinic receptor? What is acetylcholine classified as? See all questions in Neurons and Behavior. Impact of this question views around the world. You can reuse this answer Creative Commons License. The conditions inside our body must be carefully controlled if the body is to function effectively. The conditions are controlled in two ways with chemical and nervous responses.
All control systems include:. Nerve cells are called neurones. They are adapted to carry electrical impulses from one part of the body to another. A bundle of neurones is called a nerve. There are three main types of neurone:. Function: To transmit messages from one part of your body to another Neurons: Messenger cells in your nervous system Nerve impulses: Electrical signals carrying messages Neurotransmitters: Chemicals released by one neuron to excite a neighbouring one.
Health - Nerve function test. Communication between nerve cells The BBC is not responsible for the content of external websites.
Explore the BBC. Wildlife Finder. Contact Us. Nervous system - Nerve Cells and Nerves. Each neuron has three basic parts: cell body soma , one or more dendrites, and a single axon.
In many ways, the cell body is similar to other types of cells. It has a nucleus with at least one nucleolus and contains many of the typical cytoplasmic organelles. It lacks centrioles, however. Because centrioles function in cell division, the fact that neurons lack these organelles is consistent with the amitotic nature of the cell. Dendrites and axons are cytoplasmic extensions, or processes, that project from the cell body. They are sometimes referred to as fibers.
Dendrites are usually, but not always, short and branching, which increases their surface area to receive signals from other neurons. The number of dendrites on a neuron varies.
They are called afferent processes because they transmit impulses to the neuron cell body. There is only one axon that projects from each cell body.
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