IHS Distance Learning Test Questions and Correct Answers

c). rises upward and forward, then descends to the drum The adult ear canal: a). is usually straight b). curves like a vertical figure "S" c). rises upward and forward, then descends to the drum d). descends downward, then backward toward the drum c). where the canal narrows to enter the temporal bone The isthmus is: a). another name for the aperture b). located at the second bend of the canal c). where the canal narrows to enter the temporal bone d). the area between the first and second bend d). all of the above The pinna and the external canal together: a). gather and reinforce acoustical signals b). with the irregular shape of the auricle, cause increases and decreases at different frequencies c). forms a resonating sound d). all of the above b). 2700 Hz The average resonant frequency of the ear canal plus concha is: a). 1500 Hz b). 2700 Hz c). 3500 Hz d). 1000 Hz d). tympanic membrane The dividing line between the external ear and the middle ear is the: a). malleus b). Eustachian tube c). oval window d). tympanic membrane a). cilia, ceruminous glands, sebaceous glands The ear canal contains: a). cilia, ceruminous glands, sebaceous glands b). ceruminous glands, pinna, scaphoid fossa c). umbo, isthmus, sebaceous glands d). crus, aperture, sebaceous glands b). along the bottom of the ear canal The Vagus Nerve (Xth Cranial) is found: a). along the bottom of the tympanic membrane b). along the bottom of the ear canal c). along the bottom of the intertragal notch d). at the top of the isthmus b). crus Which of the following terms is not part of the tympanic membrane? a). pars tensa b). crus c). pars flaccida d). umbo