Genetics

Key gene identified for improving multiple sclerosis treatment

The disease multiple sclerosis (MS) attacks the central nervous system and, with time, can give rise to muscle tremors and loss of balance. Researchers at Karolinska Institutet have now identified a gene, Gsta4, that protects ...

Neuroscience

New study on development of Parkinson's disease is 'on the nose'

The loss of a sense of smell is known to be one of the earliest signs of Parkinson's disease (PD) and can even appear years before the characteristic tremors and loss of motor function are seen. Some scientists believe that ...

Diseases, Conditions, Syndromes

Tips to keep ticks under control this summer

Summertime brings an abundance of good things—sunshine, warm weather, backyard cookouts and fire pits—but, like it or not, summertime also brings out some pesky creatures that could put a damper on your plans and health.

Oncology & Cancer

How metastatic cancer survives in the subarachnoid space

A team of researchers working at Memorial Sloan Kettering Cancer Center in New York has discovered how metastatic cancer is able to survive in the hostile subarachnoid space. In their paper published in the journal Science, ...

Diseases, Conditions, Syndromes

COVID-19 may attack patients' central nervous system

Depressed mood or anxiety exhibited in COVID-19 patients may possibly be a sign the virus affects the central nervous system, according to an international study led by a University of Cincinnati College of Medicine researcher.

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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.

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