The ear is divided into three main parts: the outer ear, middle ear, and inner ear. The outer ear includes the pinna, which collects sound waves, and the ear canal, which directs them to the eardrum. The eardrum vibrates in response to sound, transmitting these vibrations to the middle ear. The middle ear contains three tiny bones called the ossicles—the malleus, incus, and stapes—which amplify the sound vibrations. The inner ear houses the cochlea, a spiral-shaped organ that converts these vibrations into electrical signals. These signals are then sent to the brain via the auditory nerve, allowing us to perceive sound.