Presentation on theme: "Life Science Chris Petriccione"— Presentation transcript:
1 Life Science Chris Petriccione The EarLife ScienceChris Petriccione
2 Questions How do we hear things and understand what is being said? Why are our ears on the side of our head, when rabbits have them on top of their heads?What causes hearing loss?
3 The EarThere are three main parts:Outer EarMiddle EarInner Ear
4 Outer EarThe outer ear collects sound and sends it down ear canal to eardrum
5 Middle EarSound vibrations travels from ear drum to the bones of the middle ear.Sound hits the hammer, which passes to the anvil, and finally to the stirrup, where the vibration is passed to the cochlea.
6 QuestionWhy use bone as a transmitter of sound vibrations?
7 Inner EarThe cochlea is a fluid filled spiral, which is where the vibrations travel to the organ of CortiThe organ of Corti is a strip of tiny hairs (about 20,000) which are nerve endings that detect vibrations and send it to the brain.