Lesson 1

Question 1

The adult ear canal

Answer 1

rises upward and forward, then descends to the drum

Question 2

The isthmus is

Answer 2

where the canal narrows to enter the temporal bone

Question 3

The pinna and the external canal together

Answer 3

gather and reinforce acoustical signals, with the irregular shape of the auricle, cause increases & decreases, forms a resonating tube

Question 4

The average resonant frequency of the ear canal plus concha is

Answer 4

2700 Hz

Question 5

The dividing line between the external ear and the middle ear is

Answer 5

tympanic membrane

Question 6

The ear canal contains

Answer 6

cilia, ceruminous glands, sebaceous glands

Question 7

The Vagus Nerve (Xth Cranical) is found

Answer 7

along the bottom of the ear canal

Question 8

Which of the following terms is not part of the tympanic membrane? Pars tensa, crus, Pars flaccida, Umbo

Answer 8

Crus

Question 9

An otoscopic inspection should reveal

Answer 9

a view of the pearly white tympanic membrane

Question 10

Which of the following is a part of the pinna? tragus, intertragal notch, triangular fossa, all of the above

Answer 10

all of the above