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Chapter Assessment Lesson 7.2
Learning Key Terms and Concepts
Another name for the eardrum is the _____.
The outer part of the ear is known as the _____.
The organ of Corti is located in which structure of the ear?
Where would you find cerumen?
A. pinna
B. Eustachian tube
C. auditory canal
D. middle ear
Which part of the ear carries sound impulses to the brain?
A. pinna
B. tympanic membrane
C. cochlear nerve
D. auditory nerve
In the pathway of hearing, sound waves travel from the tympanic membrane to the _____.
A. ossicles
B. cochlea
C. Eustachian tube
D. auditory nerve
What is the purpose of the Eustachian tube?
A. to carry sound waves to the middle ear
B. to carry sound waves to the inner ear
C. to equalize pressure in the middle ear
D. to protect the inner ear from microorganisms
An audiologist would examine someone with _____.
A. hearing loss
B. a sore throat
C. blurred vision
D. chest pain
Instructions: Write the letter of the name of the part of the ear on your answer sheet next to the corresponding number.
Auditory canal
Middle ear
Semicircular canals
Auricle
Vestibulocochlear nerve
Tympanic membrane
Cochlea
Eustachian tube
Thinking Critically
Mrs. Omar took her baby to the pediatrician because the baby had cried throughout the night and kept holding the left side of his head. Mrs. Omar told the doctor that her baby had suffered a cold for about a week. After examining the baby's ear, the doctor reported that the baby had a bulging, red eardrum. The doctor thought the cause was a middle ear infection and told the mother the baby was suffering from _____. What did the doctor say was the problem, and what treatment did she prescribe? Explain your reasoning.
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