Milo and Garfield are two friends who have acquired hearing loss, but the cause of hearing loss in Milo is different from that in Garfield. Milo has a conductive hearing loss. He can hear, but not clearly and loudly. The doctor has told Milo that calcium has built up on the bones in his middle ear interfering with their movements. Garfield has neural hearing loss. The doctor has told Garfield that he cannot hear because the auditory nerve cannot transmit electrical impulses from receptors in his inner ear to his brain. By completing the following tasks, help Milo and Garfield understand how their ear works and why they have difficulty hearing sounds. E. Draw and label a diagram showing the position of the bones in the middle ear.
Milo and Garfield are two friends who have acquired hearing loss, but the cause of hearing loss in Milo is different from that in Garfield. Milo has a conductive hearing loss. He can hear, but not clearly and loudly. The doctor has told Milo that calcium has built up on the bones in his middle ear interfering with their movements. Garfield has neural hearing loss. The doctor has told Garfield that he cannot hear because the auditory nerve cannot transmit electrical impulses from receptors in his inner ear to his brain. By completing the following tasks, help Milo and Garfield understand how their ear works and why they have difficulty hearing sounds.
E. Draw and label a diagram showing the position of the bones in the middle ear.
F. Explain the function of the bonesinconducting sound.
G. Draw and label a diagram showing the inner ear, the position of receptors and the auditory nerve.
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