Head, Ear, CN VIII

Question 1

Label 1-2

Answer 1

1. auricular cartilage
2. annular cartilage

Question 2

What are the components of the external ear?

Answer 2

scutiform cartilage
annular cartilage
external auditory meatus
auricular cartilage

Question 3

What are the components of the inner ear?

Answer 3

cochlea
petrosal bone
semicircular canals
vestibule

Question 4

What are the components of the middle ear?

Answer 4

tympanic bulla
tympanic cavity
tympanic membrane
malleus
incus
stapes

Question 5

The auricle is also called the ______

Answer 5

pinna

Question 6

Label

Answer 6

orange: cutaneous marginal sac
red: tragus

Question 7

What is scutiform cartilage?

Answer 7

L shape cartilage interposed in auricular muscles

Question 8

You use an otoscope on a dog and cannot see the ear canal. What is a likely reason?

Answer 8

canal could be inflamed
maybe chronic otitis

Question 9

The middle ear is also called the ________

Answer 9

tympanic cavity

Question 10

The middle ear is bound laterally by the _______ and medially by the _______

Answer 10

tympanic membrane (eardrum)
petrosal portion of temporal bone

Question 11

What is the vestibular window (oval)? It connects to _____ and is covered by _____

Answer 11

dorsal
connects to vestibule
covered by footplate of stapes

Question 12

What is the cochlear window (round)? It connects to _____ and is covered by _____

Answer 12

ventral
connects to cavity of cochlea
covered by secondary tympanic membrane

Question 13

[Dorsal/Ventral] to both windows, the medial wall bulges over the [stapes/cochlea/tympanic membrane], forming the ________

Answer 13

Ventral
cochlea
promontory

Question 14

Which bone is attached to the tympanic membrane?

Answer 14

malleus - is the largest ear bone

Question 15

The ear bones of the middle ear have _____ type joints

Answer 15

synovial

Question 16

Where does the auditory tube go into? When you [open/close] the mouth, the auditory tube opens and is connected

Answer 16

tympanic bulla
open

Question 17

If an infection gets in the inner ear, what happens to pressure?

Answer 17

the pressure isn’t equalized

Question 18

The ______ is dorsally situated in the middle ear

Answer 18

malleus

Question 19

The ________ helps to equalize pressure in the ear

Answer 19

auditory tube of pharyngeal opening

Question 20

Label 1-4

Answer 20

1. nasopharynx
2. laryngopharynx
3. auditory tubes of pharyngeal opening
4. oropharynx

Question 21

What are the auditory ossicles?

Answer 21

malleus
incus
stapes

Question 22

The malleus is moderated by the ______ muscle

Answer 22

tensor tympani m.

Question 23

The incus connects the _____ to the ______

Answer 23

malleus
stapes

Question 24

The stapes articulates with the _______, attaches to the ________, moderated by the ________ muscle

Answer 24

incus
vestibular window
stapedius muscle

Question 25

What nerve is in the inner ear?

Answer 25

vestibulocochlear n.

Question 26

What are the semicircular canals called specifically?

Answer 26

anterior semicircular canal
lateral semicircular canal
posterior semicircular canal

Question 27

What are the labyrinths of the inner ear called?

Answer 27

membranous labyrinth
bony labyrinth

Question 28

Label 1-7

Answer 28

1. vestibulocochlear n.
2. cochlea
3. cochlear n.
4. vestibular n.
5. cochlear nucleus
6. vestibular nucleus
7. vestibular semicircular canals

Question 29

What is the first and second order neuron of the auditory reflex?

Answer 29

1st: cochlear n.
2nd: superior olivary complex (in medulla oblongata)