T. BUCK / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY T. BUCK / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Ear. The ear canal of the outer ear joins the pinna (the visible part of the ear) to the eardrum (pink), the start of the middle ear. Three tiny joined bones (the ossicles, yellow): the malleus, joined to the inside of the eardrum, the incus, and the stapes, connect the eardrum to the inner ear. The inner ear consists of fluid-filled passages called the labyrinth (purple), which includes the snail-like cochlea that is connected by nerves (yellow) to the brain. The loops above the cochlea are semi-circular canals responsible for balance. The Eustachian tube (lower right) joins the middle ear to the nasopharynx.
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