Auditory system

The auditory system is made up of parts in your body that allow you to hear sound. Your outer ear collects sound and brings it into your inner ear. The inner ear contains tiny bones, cells and fluid that help change the sound into signals that your brain can understand. This process is called hearing. It takes place in two parts of your inner ear called the cochlea and the organ of corti. The cochlea is filled with fluid, and it helps to convert sound waves into electrical signals. The organ of corti is made up of many nerve cells. These cells pick up the signals from the cochlea and pass them to your brain so that you can interpret the sound.