Medications

New hope for treating chronic pain without opioids

According to some estimates, chronic pain affects up to 40% of Americans, and treating it frustrates both clinicians and patients––a frustration that's often compounded by a hesitation to prescribe opioids for pain.

Diseases, Conditions, Syndromes

Researchers learn what's driving 'brain fog' in people with COVID-19

One of the dozens of unusual symptoms that have emerged in COVID-19 patients is a condition that's informally called "COVID brain" or "brain fog." It's characterized by confusion, headaches, and loss of short-term memory. ...

Sports medicine & Kinesiology

Q&A: Stretching your hamstring

I am a very active person. I visit the gym and run regularly. Although I have been able to avoid any major injuries, I find myself constantly stretching my hamstrings. It seems no matter how flexible I get, they still feel ...

Medical research

Fatty acid may help combat multiple sclerosis

The abnormal immune system response that causes multiple sclerosis (MS) by attacking and damaging the central nervous system can be triggered by the lack of a specific fatty acid in fat tissue, according to a new Yale study. ...

page 1 from 40

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