Ans: The primary functions of the human ear are hearing and balance. The hearing mechanism entails the passing of sound waves through the auditory canal and then reaching the eardrum. The vibrations pass through the tympanic membrane to the tympanic cavity. After that, the ear ossicles in the tympanic activity receive the vibrations, and the stapes push the oval window in and out. After that, the action is forwarded to the corti – the hearing receptor containing small hair cells that transcribe the vibrations into an electrical impulse transmitted to the brain by sensory nerves. The second function of the human brain is balance. It is under the purview of the Eustachian tube and the vestibular complex. The Eustachian tube harmonizes the air pressure in the middle ear and helps maintain balance. Secondly, the vestibular complex has receptors that also facilitate balance.