MediHealth
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Natural killer cell
Updated: Nov 17, 2009 - 13:25Natural killer cells are a type of lymphocyte. They find and destroy cells that have been infected by a virus. ...
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Nephrologist
Updated: Nov 17, 2009 - 13:25Nephrologists are specialist doctors who know all about your kidneys. They are called nephrologists because they work with nephrons. ...
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Nephron
Updated: Nov 17, 2009 - 13:25Nephrons are where blood filtering takes place in your kidneys. They are found at the end of blood vessels, and separate blood cells from plasma. There are about one million nephrons in each of your two kidneys. The first part of the nephron separates the larger parts of blood (red blood cel...
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Nerve
Updated: Nov 17, 2009 - 13:25Nerves are long, thin projections that come from neurons. They are pathways that carry the electrical messages sent by neurons from your brain through your nervous system to the rest of your body. ...
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Nervous system
Updated: Nov 17, 2009 - 13:25Your nervous system is a network of electrical signals that are sent by neurons to tell your body what to do. These signals travel back and forth between your brain and other parts of your body via nerves in your spinal cord, which runs down through your spine. Your nervous system is responsi...
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Neuroblastoma
Updated: Feb 03, 2010 - 13:47Neuroblastoma is a type of cancer. Cancer just means ‘cells behaving badly’. They grow faster than they are meant to. All the cells join together to make a lump called a tumour. They can get in the way of normal cells and stop them doing their job properly. In a neuroblastoma it’s a special ...
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Neurologist
Updated: Nov 17, 2009 - 13:25A neurologist is a type of doctor who is an expert on the brain. They are called neurologists because they work a lot with neurons. ...
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Neuron
Updated: Nov 18, 2009 - 13:57Neuron is just a fancy name for a type of brain cell. They are also sometimes called a nerve cell. Neurons send messages by zapping each other with a little zap of electricity. These electrical messages are carried by neurotransmitters and are the instructions from your brain that tell your body ...
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Neurotransmitter
Updated: Nov 26, 2009 - 16:39Neurotransmitters carry messages from neuron to neuron. 'Neuro' means brain and 'transmitter' means message carrier. There are lots of different neurotransmitters with different names, including acetylcholine, serotonin, noradrenaline, adrenaline and dopamine. ...
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Neutropenia
Updated: Nov 17, 2009 - 13:26Neutropenia is what it's called when you have a very low number of white blood cells in your bloodstream. How bad it is depends on how low the number is. If you have neutropenia, you are more likely to get infections caused by bacteria or viruses. ...
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