Nervous System
The nervous system is the central command center of the body. It gathers and interprets information. It consists of nervous tissue which sends information to your body. It has 2 main parts. The central and peripheral nervous systems. The central NS consists of your brain and spinal cord. It also receives and responds to all information. The peripheral NS consists of everything in your nervous system but the brain and spinal cord. It connects your body to your central nervous system through nerves which are made out of a bundle of cells called neurons. It is divided into 2 divisions, the somatic and autonomic nervous systems. The somatic NS is all voluntary(movement you control) movement and the autonomic NS is involuntary(movement you do not control) movement. An example of voluntary movement would be moving your muscles such as flexing because you can control it. Whereas an example of involuntary movement would be breathing. You don't have to Tell yourself to breathe, your body does that for you; that's pretty neat! There are 2 more divisions which are the sympathetic and parasympathetic nervous systems. They keep you in balance. The sympathetic is "fight or flight". It increases heart rate and sloes digestion. The parasympathetic "rests and digests". It decreases heart rate and returns digestion to normal. The neuron is a cell which is very important to the NS. It carries fast moving electrical signals called impulses. Sensory neurons carry impulses to your central nervous system. They gather information through receptors. Motor neurons send signals from the brain and spinal cord. They make you sweat, move your muscles, and/ or squint. The other two important parts of the NS are the brain and spinal cord. andand ansnsnsnsnsnsnsn ananananan
This video will teach you about the brain and spinal cord. It is also quite terrifying. It also talks about nerves.
"I have a form of Parkinson's disease, which I don't like. My legs don't move when my brain tells them to. It's very frustrating."~ George H.W. Bush Image one: This is showing Alzheimer's disease and the memory part of the brain becoming weaker.
Image two: This shows Huntington's disease and how it effects the Basal Ganglia. Image three: This is depicting ALS. It I showing the neuron becoming really weak. Image four: This is showing MS which effects the Myelin Sheath part of the neuron. Image five: This shows Parkinson's and how weak you get from it. Image six: This shows epilepsy and uncommon electrical signals, this can lead to seizure. |
"Pressure is calming to the nervous system."~ Temple Grandin- an American professor Diseases:
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