The human brain works quickly and handles difficult tasks. Is it just the size of our brains that allows us to do these things? As it turns out, it may also have a lot to do with how well our brain cells can send multiple messages to other cells.
long thin projections in nerve cells which receive electrical signals... more
This set of bits will teach you about the system that senses the world around you and controls your body: your nervous system.
Neurons and Nerves
Neurons are unique for many reasons. For one, they have a shape that is not like any other cells. Nerve cells are also some of the longest cells in your body. There are nerve cells as long as a meter. They stretch from your hips all the way down to your toes! This is very uncommon for cells, which are usually very short. Most cells are 20 micrometers in diameter, which is just a fraction of the width of a hair.
