Changes

: #[[Sound]] travels into the [[Ear Canal|ear canal]] where it causes the [[Ear Drum|ear drum]] to [[vibration|vibrate]]. #The [[Ear Drum|ear drum]]s is connected to the [[ossicles]] which pass the [[vibration]] onto the [[cochlea]]. #Tiny hairs in the [[cochlea]] are connected to [[nerve]]s that make an electrical signal which goes to the [[brain]]. ==Key Stage 4=====Meaning===[[Hearing]] is a [[sense]] that allows [[animal]]s detect [[sound]]. ===About Hearing===: [[Animal]]s '''hear''' with their [[ears]].: [[Hearing]] can be damaged by listening to loud [[sound]]s too often.: The [[ears]] of different [[animal]]s can '''hear''' different [[sound]]s. Some [[animal]]s can '''hear''' [[sound]]s too high [[pitch]]ed for us to '''hear''' and some can '''hear''' [[sound]]s too low [[pitch]]ed for us to '''hear'''.There are several parts of the ear you should know:*[[Pinna]] - The shaped [[cartilage]] collects the sound.*[[Ear Cannal]] - The tube leading to the [[Ear Drum|ear drum]].*[[Ear Drum]] - This [[vibrate]]s like a drum skin when sound hits it.*[[Ossicles]] - Three tiny [[bone]]s that pass the [[Vibrate|vibration]] to the [[cochlea]]. *[[Cochlea]] - A spiral tube with a [[liquid]] inside it and tiny hairs attached to [[nerve]] cells.*[[Eustachian Tube]] - A tube used to keep the [[pressure]] the same both sides of the [[Ear Drum|ear drum]] to stop it bursting.*[[Auditory Nerve]] - The [[nerve]] connecting the ear to the [[brain]]. {| class="wikitable"|-|[[File:EarDiagram.png|center|400px]]|-| style="height:20px; width:400px; text-align:center;" |A [[diagram]] of the ear.|} #[[Sound]] travels into the [[Ear Canal|ear canal]] where it causes the [[Ear Drum|ear drum]] to [[vibration|vibrate]].#The [[Ear Drum|ear drum]]s is connected to the [[ossicles]] which pass the [[vibration]] onto the [[cochlea]].#Tiny hairs in the [[cochlea]] are connected to [[Receptor Cell|receptor cells]] in the [[ear]]s which create an [[Action Potential|action potential]] which sends an [[Impulse (Biology)|impulse]] to the [[Central Nervous System|central nervous system (CNS)]].