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Section 3 Hearing
Somatic and Special Senses
| Question | Answer |
|---|---|
| What is the primary function of the auditory ossicles in the hearing process? A. To produce sound vibrations B. To amplify vibrations as they pass through C. To convert sound waves into electrical impulses D. To maintain equilibrium | To amplify vibrations as they pass through |
| Which structure transmits sound vibrations to the perilymph in the scala vestibuli? A. The malleus B. The round window C. The stapes against the oval window D. The tympanic membrane | The stapes against the oval window |
| What happens when receptor cells in the cochlea are stimulated by sound vibrations? A. The semicircular canals activate B. The membrane becomes permeable to Ca+ ions C. The tympanic membrane vibrates faster D. The auditory ossicles contract | The membrane becomes permeable to Ca+ ions |
| Which structure is responsible for converting sound vibrations into nerve impulses that the brain can interpret? A. Organ of Corti B. Semicircular canals C. Auditory tube D. Auricle | Organ of Corti |
| Where are sound impulses ultimately interpreted in the brain? A. In the frontal lobe B. In the occipital lobe C. In the temporal lobe D. In the parietal lobe | In the temporal lobe |
| What is the function of the auditory tube? A. To convert sound waves into electrical impulses B. To maintain equal air pressure on both sides of the eardrum C. To amplify sound vibrations D. To provide a sense of equilibrium | To maintain equal air pressure on both sides of the eardrum |
| What happens when a person is exposed to sound levels above 90 dB frequently? A. The auditory tube becomes inflamed B. The round window ruptures C. Permanent hearing damage can occur D. The cochlea produces excess fluid | Permanent hearing damage can occur |
| What structure helps funnel sound into the ear? A. External auditory meatus B. Tympanic membrane C. Auricle (pinna) D. Oval window | Auricle (pinna) |
| Be able to trace a sound wave through the ear. | Auricle → external auditory meatus → tympanic membrane → auditory ossicles |
| What is the role of the eardrum in hearing? | It vibrates in response to sound waves and transmits these vibrations to the middle ear. |
| What is the function of the auditory nerve in hearing? | It transfers electrical signals from the cochlea to the brain. |
| How does damage to the auditory nerve affect hearing? | It can cause hearing loss or deafness. It can result in tinnitus, or ringing in the ears. |
| Which part of the ear is responsible for maintaining balance? | The inner ear, specifically the semicircular canals |
| What is the role of hair cells in the ear? A They sense vibrations and convert them into electrical signals. B They amplify sounds so they can be heard more clearly. C They protect the ear from infection. D They do not play a role in hearing. | They sense vibrations and convert them into electrical signals. |
| What role does the outer ear play in the processing of sound? A It collects and directs sound waves into the ear canal. B It amplifies sound waves. C It converts sound waves into electrical signals. D It is not involved in the processing of sound. | It collects and directs sound waves into the ear canal. |
| What is the primary role of the cochlea in the auditory system? | To transform vibrations into nerve impulses. |
| How does the middle ear contribute to the process of hearing? | It contains three small bones that transmit vibrations from the eardrum to the inner ear. The Eustachian tube in the middle ear helps to equalize pressure on either side of the eardrum. |
Created by:
tmcnu2