Neurons continue to grow throughout human life.For years scientists and doctors thought that brain and neural tissue couldn’t grow or regenerate. While it doesn’t act in the same manner as tissues in many other parts of the body, neurons can and do grow throughout your life, adding a ...
The human brain has about 100 billion neurons. But scientists don't yet have a complete inventory of the many types of brain cells that exist and their functions. They also don't understand how electrical and chemical signals from neurons produce thoughts, behaviors and actions. ...
Fun Facts About the Nervous System There are more nerve cells in the brain thanstarsin the Milky Way. Nerves are covered by a substance called myelin that helps messages move quickly through the body. The spinal cord is just 19 inches long, but it holds over 10 million neurons. ...