IHS Questions- For License Prep Questions And Answers AGRADE

IHS Questions- For License Prep Questions And Answers AGRADE The adult ear canal: -ANSWER- Rises upward and forward then descends to the drum The isthmus is: -ANSWER- Where the canal narrows to enter the temporal bone The pinna and the external canal together: -ANSWER- -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: -ANSWER- 2700 Hz. The dividing line between the external ear and the middle ear is the: -ANSWERTympanic membrane. The ear canal contains: -ANSWER- Cilia, ceruminous glands. sebaceous glands. The vagus nerve (Xth cranial) is found: -ANSWER- Along the bottom of the ear canal. These are parts of the tympanic membrane: -ANSWER- Pars tensa, Pars flaccida, Umbo. An otoscopic inspection should reveal: -ANSWER- A clear view of the white tympanic membrane. These are parts of the pinna: -ANSWER- Tragus, intertragal notch, triangular fossa. Atresia refers to: -ANSWER- A closure of the external auditory canal. Perforation of the eardrum can be caused by: -ANSWER- -An infection -A fracture of the temporal bone -A nearby explosion. These are types of hearing loss: -ANSWER- -Conductive -Central -Sensorineural Conductive losses may be caused by: -ANSWER- A prolapsed canal Impacted cerumen Which surgical technique repairs the tympanic membrane? -ANSWER- Myringoplasty A cholesteatoma can be described as: -ANSWER- 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: -ANSWER- Refer the patient to a physician. A swollen ear may be caused by: -ANSWER- -Eczema -Otitis externa -Dermatitis Tympanosclerosis may be described as: -ANSWER- Calcium deposits. A tympanic membrane perforation may cause a: -ANSWER- Conductive loss. Theoretically, the increase in sound pressure provided by the middle ear structure is about: -ANSWER- 27 dB. The footplate of the stapes fits into the: -ANSWER- Oval window. A type "A" tympanogram would indicate: -ANSWER- Normal pressure and compliance. The difference in area size between the tympanic membrane an the footplate of the stapes increasing the sound pressure at the footplate is : -ANSWER- The transfer function or aerial ratio. The middle ear cavity contains: -ANSWER- Annular ligaments, malleus, stapes and tensor tympani. The middle ear system is often referred to as: -ANSWER- An impedance matching transformer. The middle ear cavity, as a transducer changes energy from one form to another. The energy changes from: -ANSWER- Acoustic energy to mechanical energy to hydraulic energy. The middle ear muscles contract, resulting in: -ANSWER- An acoustic reflex. The Eustachian tube begins in the lower portion of the tympanic cavity and ends at the: -ANSWER- Nasopharynx. The Eustachian tube of a child is: -ANSWER- Straight, short, horizontal. A cholesteatoma: -ANSWER- -Occurs in the middle ear -May perforate the eardrum -Is usually accompanied by a constant odorous discharge. Change in either stiffness or mass occur when the normal middle ear function is altered by disease or trauma causing: -ANSWER- A feeling of stuffiness or a complaint of hearing in a barrel. Otosclerosis: -ANSWER- Occurs more often in women than men Occurs more often in Caucasians than other races Appears to be inherited