This document discusses the 5 senses - sight, hearing, smell, taste, and touch. It focuses on hearing, describing the 8 parts of the ear including the ear canal, eardrum, hammer, anvil, stirrup, cochlea, and auditory nerve. It explains that sound vibrations enter the ear canal and cause the eardrum to vibrate, transmitting the vibrations through the bones of the middle ear and into the cochlea where sound signals are sent to the brain. For people who have difficulty hearing, hearing aids can be used to amplify sounds collected by the ear canal.