News tagged with nervous system

Related topics: nerve cells · brain · neurons · cells · central nervous system

Protecting neurons in neurodegenerative disease

(Medical Xpress)—Neurobiologist from the Friedrich Miescher Institute for Biomedical Research proved that excitability protects motoneurons from degeneration in amyotropic lateral sclerosis, a rare neurodegenerative disease. ...

Oct 03, 2013
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Capturing brain activity with sculpted light

Scientists at the Campus Vienna Biocenter (Austria) have found a way to overcome some of the limitations of light microscopy. Applying the new technique, they can record the activity of a worm's brain with high temporal ...

Sep 09, 2013
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'Human-on-a-chip' could replace animal testing

Development of new prescription drugs and antidotes to toxins currently relies extensively on animal testing in the early stages of development, which is not only expensive and time consuming, it can give scientists inaccurate ...

Jun 03, 2016
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Gene therapy against brain cancer

Only a few days ago, the press (especially in English-speaking countries) enthusiastically announced the publication of a study that described in great detail the genetics of breast cancer, a discovery that according to many ...

May 13, 2016
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Nervous system

The nervous system is a network of specialized cells that communicate information about an organism's surroundings and itself. It processes this information and causes reactions in other parts of the body. It is composed of neurons and other specialized cells called glial cells,(plural form glia), that aid in the function of the neurons. The nervous system is divided broadly into two categories: the peripheral nervous system and the central nervous system. Neurons generate and conduct impulses between and within the two systems. The peripheral nervous system is composed of sensory neurons and the neurons that connect them to the nerve cord, spinal cord and brain, which make up the central nervous system. In response to stimuli, sensory neurons generate and propagate signals to the central nervous system which then processes and conducts signals back to the muscles and glands. The neurons of the nervous systems of animals are interconnected in complex arrangements and use electrochemical signals and neurotransmitters to transmit impulses from one neuron to the next. The interaction of the different neurons form neural circuits regulate an organism's perception of the world and what is going on with its body, thus regulating its behavior. Nervous systems are found in many multicellular animals but differ greatly in complexity between species.

This text uses material from Wikipedia, licensed under CC BY-SA

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