Nerve impulses are transmitted between areas of the body via a network of nerve cells and fibres. This is called the Nervous system.

When you touch a hot object, you sense that it is hot and suddenly pull off your hands. Have you thought about how you recognise that the object is hot? How you can act so quickly? We will learn how humans respond to various stimuli around us.

All cells in our body have the ability to respond to stimuli. But, the cells of our nervous tissue are specialised for being stimulated and then transmitting this stimulus very fast from one part to another part in the body. Our brain, spinal cord, and nerves are composed of nervous tissue. The cells of nervous tissue are called Nerve cells or Neurons.