Ear

===The ear is an organ used for hearing. It consist of Ear lobes, Auditory canal, Tympanum, Hammer, Avil, Stirrup, Oval window, Round window, Semicircular canals, Cochlear nerve, Cochlea, Bone, and Eustachian tube. The Ear lobe is soft, and fleshy. It is the lower part of the external ear. The Auditory canal is a passage in the ear. Tympanum otherwise known as the eardrum. It is the membrane in the ear that vibrates to sounds. Hammer is a small bone in the middle of the ear that transmits vibrations of eardrums to the incus. Anvil is a small anvil-shaped bone in the middle ear. It transmits vibrations between the Malleus and Stapes. Stirrup is a stirrup-shaped ossicle that transmits sounds from the Incus to the Cochlea. Oval window is an oval opening in the middle ear to which the base of the stapes is connected and through which ossicles of the ear transmit vibrations to the cochlea. Round window is an opening on the medial wall of the middle ear that leads into the cochlea and is covered by a secondary tympanic membrane. Semicircular canal is a three looped fluid-filled membranous tubes, right angles to one another. It is concerned with sense of orientation ajnd equilibrium. Cochlear nerve is the head that carries signals from cochlea of the inner ear to the brain. Cochlea is a spiral cavity of inner ear containing organ of Corti, which produces nerve impulses in response to sound vibrations. Bone is any hard piece, it is a whitish tissue making up the skeleton in humans and other vertebrates. Eustachain tube is a narrow passage leading from the pharynx to the cavity of the middle ear. It allows the equalization of pressure on each side of the eardrum.===