Describe the anatomy and physiology of hearing. Describe the anatomy and physiology of taste and smell.

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Medical Sciences

Describe the anatomy and physiology of hearing.
Describe the anatomy and physiology of taste and smell.

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1 Anatomy of hearing Outer ear Sound is collected by the outer ear which is also known as the pinnae It travels down the ear canal and vibrates the eardrum This turns an invisible energy the acoustic signal into visible movement of the eardrum mechanical force Middle ear The eardrum movement causes movement of the middle earbones This bone movement provides an increase in the force of the energy as it moves from air filled middle ear space to a fluid filled cochlea Inner ear The cochlea is snail shaped and is filled with tens of thousands of hair cells The air cells are embedded in structures that move in response to the waves created by the incoming sound The movement of these hair cells result in a small electrical charge This charge is send by auditory nerve upto the brain for interpretation as sound The cochlea is arranged tonotopically like a piano keyboard High frequencies are processed at the base of the cochlea low frequencies are processed at the apex of the cochlea Physiology of heraing Hearing is the process by which the ear transforms sound vibrations in the external See Answer

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