Nervous System

How the nervous system works

Why is the nervous system important in your daily life?

The nervous system is important because it detects and interprets information from the environment outside the body and within the body. It also controls most body functions. Also without a nervous system your body wouldn't know what to do.


Centurion nervous is made up of the brain and spinal cord.

The peripheral nervous system it's all the other nerves in the body

Some of the parts of the nervous system

How can you keep your nervous system healthy?

You need to drink plenty of water because your brain is 85% water. You also need to eat a lot of calcium, potassium, and healthy fats. Healthy fats help build connections between nerves and brain cells.


Issues that can occur if you don't take care of the nervous system .

In the nervous system problems occur slowly and cause a gradual loss of function. They may occur suddenly and cause life threatening problems like a blood supply problem, injuries to the head, and problems in the spinal cord.

Different types of neurons

There are 3 different types


Sensory neurons- Picks up Stimuli from the internal or external environment and converts each stumulas into a nerve impulse the impulse travels along the sensory neuron until it reaches an inter neuron.


Inter neuron- it is the neuron that carries nerve impulses from one neuron to another some inter neuron pass impulses from sensory to motor neurons.


Motor neurons- It sends an impulse to a muscle then the muscle contracts in response.

Fun facts




- There are more nerve cells in the human brain than stars in the Milky Way.
- If we lined up all the neurons in our body it would be around 600 miles long.
- There are 100 billion neurons in your brain.
- The left side of human brain controls the right side of the body and the right side of the brain controls the left side of the body.
- As we get older, the brain loses almost one gram per year.
- There are about 13, 500,00 neurons in the human spinal cord.
- The total surface area of the human brain is about 25, 000 square cm.
- The base of the spinal cord has a cluster of nerves, which are most sensitive.
- An average adult male brain weighs about 1375 grams.
- An average adult female brain is about 1275 grams.
- Only four percent of the brain's cells work while the remaining cells are kept in reserve.
- Neurons do not under go mitosis
- Neurons are the largest cells in the human body. (They can be up to 3 feet long)
- The Nervous System can transmit impulses as fast as 100 meters per second.


  • http://answers.yahoo.com/question/index?qid=20090413152349AAPltcY