Ear

Question 1

Most common site of ear infections.

Answer 1

Mastoid Air Cells

Question 2

What muscles opens the auditory tube and allows ears to pop?

Answer 2

Tensor Veli Palatini

Question 3

WHat muscle pulls apart the incus and malleus when sudden, loud noises occur? (prevents transfer of damaging vibrations)

Answer 3

Tensor tympani

Question 4

What nerve innervates Tensor Veli Palatini and Tensor Tympani?

Answer 4

V3 Mandibular

Question 5

What is the purpose of the bony structures of the middle ear?

Answer 5

To conduct vibrations from the tympanic membrane to the window of the cochlea, causing inner ear fluids to vibrate = sound perception.

Question 6

What part of the ear contains wax, glands, and had?

Answer 6

The lateral 1/3 near the external auditory meatus.

Question 7

What structure forms the roof of the tympanic cavity? (TEST…Park loved this in lecture.)

Answer 7

Tegmen Tympani

Question 8

What nerve runs through the middle ear?

Answer 8

Chordae Tympani (CN VII)

Question 9

What fissure does the chordae tympani nerve run in? (LAB…Park loves it)

Answer 9

Petrotympanic fissure.

Question 10

Describe the Intrapetrous course of VII.

Answer 10

Enters the Internal Auditory Meatus, turns posteriorly in skull, runs through the middle cranial fossa, and out the stylomastoid foramen.