cochlea

Development of the Ear

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There are three morphological divisions of the ear. They are: the external, middle and internal ear. These all divisions have a separate origin. Internal ear The formation of membranous labyrinth occurs from a specialized area of surface ectoderm overlying the developing hindbrain. At first, this area is apparent as a thickening called the otic placode. … Read more

Mechanism of hearing and balancing

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Mechanism of hearing and balancing

Introduction The mammalian ear performs two different and unrelated functions, i.e. hearing and balance. The external and middle ears are involved in hearing only whereas the inner ear functions in both hearing and balancing. Hearing The sound waves from the external source get collected by the pinna. These waves are conducted through the external auditory … Read more