Tanya, a ten-year-old girl had a severe earache. Her mother took her to an E.N.T. doctor for a checkup. The doctor noticed that she had a throat infection which had spread to her ear. Answer the following questions:
(a) Name the structure that connects the throat and ear.
(b) What is the collective term for the three cartilaginous structures present in the middle ear?
(c) Which is the sensory organ located in cochlea?
(d) What is the significance of the tiny hair present in the auditory canal?
(e) What is the function of auditory nerve?
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(a) Eustachian tube.
(b) Ossicles.
(c) Organ of Corti.
(d) The tiny hairs, along with the wax secreting glands of the auditory canal, prevent dust and other small foreign particles from entering the ear and reaching the ear drum.
(e) The auditory nerve carries nerve impulses from the inner ear to the brain, for hearing and for maintaining body balance.