IHS Questions- For License Prep Complete Questions & Solutions!!

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: - ANSWER Tympanic 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