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Word Count: 688
The Ear is one of the five sense organs It allows us to hear Hearing is one of our most important senses Speech development depends on hearing Without hearing our speech would not sound right Children learn to talk by copying what other people say Hearing is not a simple process Movement causes sounds so there are lots of things to hear Sounds travel in waves The waves enter the ear and the brain interprets the sound signals as soundsSurprisingly the ear also helps us balanceThere are three main parts of the ear The three parts are the outer ear middle ear and sure enough the inner ear The outer ear is made up of two main parts The two parts are the auricle and the external auditory canal The auricle is the part of the ear you see on people It is fleshy and contains no bones The loosely hanging part of the auricle is the earlobe It is made up of fat Three muscles attach the auricle to the head They are small and serve no purpose in humans However some people can move and wiggle their ears Many animals can also do this to improve their hearing Some of the animals are cats dogs foxes horses and rabbits The external auditory canal is the part you see when you look straight into the ear The external auditory canal is about and inch long To stop dirt from getting onto the eardrum or timpanic membrane the outer third of the eardrum has hairs sweat glands and glands that produce earwax The inner two thirds of the ear is surrounded by the hardest bone in you body the temporal bone It also surrounds the middle and inner part of the ear The temporal bone protects delicate structures in the earThe middle ear starts behind the timpanic membrane The three bones called the ossicles are part of the middle ear The three bones are the
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