TEST BANK CHAPTER 12: EARS,NOSE AND THROAT

TEST BANK CHAPTER 12: EARS,NOSE AND THROATChapter 12: Ears, Nose, and Throat MULTIPLE CHOICE 1.The middle ear contains the: en and sebaceous glands. and malleus. bule and cochlea. tensa and semicircular canals. ANS: B The middle ear contains the ossicles, three small bones—the malleus (umbo is part of the malleus), the incus, and the stapes. Cerumen and sebaceous glands lie outside the middle ear. The vestibule and the cochlea lie in the inner ear. The tympanic membrane separates the external ear from the middle ear and is composed of the pars tensa, and the semicircular canals lie in the inner ear. 2.The middle ear is normally filled with: . . s fluid. rospinal fluid. ANS: A The middle ear normally is an air-filled cavity in the temporal bone. 3.The hair cells of Corti and membrane of Corti: ce a waxy lubricant. ct the ear from foreign particles. late the eighth cranial nerve. mit vibrations to the ossicles. ANS: C Vibrations from the tympanic membrane cause the delicate hair cells of the organ of Corti to strike against the membrane of Corti, stimulating impulses in the sensory endings of the auditory division of the eighth cranial nerve. 4.The organ of Corti is a coiled structure located inside the: ea in the inner ear. flaccida in the tympanic membrane. chian tube. al aspect of the pinna. ANS: A The cochlea is a coiled structure within the inner ear that contains the organ of Corti. 5.Mrs. Kinder is a 39-year-old patient who presents to the office with complaints of an earache. In explaining to the patient about the function of her ears, which ear structure would you tell her is responsible for equalizing atmospheric pressure when swallowing, sneezing, or yawning? a.Eustachian tube b.Inner ear c.Pars flaccida d.Triangular fossa ANS: A The eustachian tube is a cartilaginous and bony passageway between the nasopharynx and middle ear that opens briefly to equalize the middle ear pressure with that of the atmospheric pressure when swallowing, yawning, or sneezing. This study source was downloaded by from CourseH on :08:56 GMT -05:00 TEST BANK CHAPTER 12: EARS,NOSE AND THROAT