IHS Questions- For License Prep Latest Update Graded A+

IHS Questions- For License Prep Latest Update Graded A+ The adult ear canal: Rises upward and forward then descends to the drum The isthmus is: Where the canal narrows to enter the temporal bone The pinna and the external canal together: -Gather and reinforce accoustical signals -With the irregular shape of the auricle, cause increases and decreases at different frequencies as the sound arrives at the ear. -Forms a resonating tube. The average resonant frequency of the ear canal plus concha is: 2700 Hz. The dividing line between the external ear and the middle ear is the: Tympanic membrane. The ear canal contains: Cilia, ceruminous glands. sebaceous glands. The vagus nerve (Xth cranial) is found: Along the bottom of the ear canal. These are parts of the tympanic membrane: Pars tensa, Pars flaccida, Umbo. An otoscopic inspection should reveal: A clear view of the white tympanic membrane. These are parts of the pinna: Tragus, intertragal notch, triangular fossa. Atresia refers to: A closure of the external auditory canal. Perforation of the eardrum can be caused by: -An infection -A fracture of the temporal bone -A nearby explosion. These are types of hearing loss: -Conductive -Central -Sensorineural Conductive losses may be caused by: A prolapsed canal Impacted cerumen Which surgical technique repairs the tympanic membrane? Myringoplasty A cholesteatoma can be described as: A pouch of skin filled with epithelial debris. When an excess of cerumen or a blockage of cerumen is detected, the hearing aid specialist should: Refer the patient to a physician. A swollen ear may be caused by: -Eczema -Otitis externa -Dermatitis Tympanosclerosis may be described as: Calcium deposits. A tympanic membrane perforation may cause a: Conductive loss. Theoretically, the increase in sound pressure provided by the middle ear structure is about: 27 dB. The footplate of the stapes fits into the: Oval window. A type "A" tympanogram would indicate: Normal pressure and compliance. The difference in area size between the tympanic membrane an the