Exam 4 Study Guide of the Ear

Question 1

Name the arteries which supply the auricle

Answer 1

Posterior auricular a of Eternal Carotid A

Superficial temporal a of External Carotid A

Question 2

Name the nerve which innervates the cranial surface of the auricle

Answer 2

Great auricular n of C2 & C3

Question 3

Lymph from the superior half of the cranial surface of the auricle drains into the:

• superficial parotid lymph nodes
• mastoid lymph nodes
• superficial cervical lymph nodes
• deep cervical lymph nodes

Answer 3

Mastoid lymph nodes

Deep cervical lymph nodes

Question 4

Name the gland which produces earwax

Answer 4

Ceruminous and sebaceous glands

Question 5

What is the size in diameter of the tympanic membrane?

Answer 5

1 cm

Question 6

They tympanic membrane is the partition between the ___ and ___

Answer 6

External auditory meatus

Tympanic cavity

Question 7

Name the shallow central peak of the tympanic membrane

Answer 7

Umbo

Question 8

The tympanic membrane faces anterior, inferiorly, and laterally. true or false

Answer 8

True

Question 9

The superior to lateral process of the malleus attachment on the tympanic membrane is called

Answer 9

Flaccid part

Question 10

The external surface of the tympanic membrane is innervated by the:

• auricular nerve of vagus
• tympanic nerve
• chorda tympani
• caroticotympanic n

Answer 10

Auricular n

Question 11

The external surface of the tympanic membrane is innervated by what 2 nerves

Answer 11

Auriculotemporal of mandibular

Small auricular branch of vagus

Question 12

The internal surface of the tympanic membrane is innervated by the:

• auricular n
• tympanic n
• chorda tympani
• caroticotympanic

Answer 12

Tympanic n of glossopharyngeal

Question 13

Name the features on the medial wall of the tympanic cavity

Answer 13

Prominence
Tympanic n plexus
Round window
Oval windo

Question 14

The space superior to the tympanic membrane in the tympanic cavity is called

Answer 14

Epitympanic recess

Question 15

All of the following are the contents of the middle ear except:

• malleus
• incus
• stapes
• modiolus

Answer 15

Modiolus

Question 16

Which of the following indicates the floor of the tympanic cavity:

• tegmental wall
• jugular wall
• carotid wall
• mastoid wall

Answer 16

Jugular wall

Question 17

Name the arteries which supply the pharyngotympanic tube

Answer 17

Ascending pharyngeal a of External Carotid A
Middle meningeal a of Maxillary A
A of pterygoid canal of Maxillary A

Question 18

The auditory ossicles transmit the sound wave from ___ to ___ leading to the vestibule of the bony labyrinth

Answer 18

Tympanic membrane to oval window

Question 19

The ossicles are covered with regular osteogenic periosteum. True or False

Answer 19

False (lack it)

Question 20

Name the part of the malleus that attaches to the flaccid part of the tympanic membrane

Answer 20

Neck of malleus

Question 21

Which of the following describes the umbo correctly?

• tip of the handle of the malleus
• neck of the malleus
• tip of the handle of the incus
• neck of the stapes

Answer 21

Tip of the handle of the malleus

Question 22

The lenticular process articulates with

Answer 22

Head of stapes

Question 23

The tensor tympanic inserts into

Answer 23

Handle of malleus

Question 24

The head of the malleus lies in the

Answer 24

Epitympanic recess

Question 25

The base of the stapes is considerably smaller than the tympanic membrane, as a result the vibratory force of the stapes is increased approximately ___ times over that of the tympnaic membrane

Answer 25

10 times

Question 26

The auditory ossicles increase the force of the vibrations transmitted from the tympanic membrane. True or False

Answer 26

True (also decrease the amplitude)

Question 27

The tensor tympani arises from ___ and inserts to ___

Answer 27

Pharyngotympanic tube, greater wing of sphenoid, and petrous part of temporal
Handle of malleus

Question 28

The tensor tympani is innervated by

Answer 28

N to the medial pterygoid of mandibular

Question 29

Name the wall where the pyramidal eminence is for the stapedius muscle to emerge

Answer 29

Posterior wall of tympanic cavity