Unit IV Ears

Question 1

Name the arteries which supply the auricle.

Answer 1

Posterior Auricular a. of External Carotid A.

Superficial Temporal a. of External Carotid A.

Question 2

Name the nerve which innervates the cranial surface of the auricle.

Answer 2

Posterior branch of Great Auricular nerve (lower surface)

Lesser Occipital of C2 (upper cranial surface)

Question 3

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

a. superficial parotid lymph nodes.
b. mastoid lymph nodes.
c. superficial cervical lymph nodes.
d. deep cervical lymph nodes.

Answer 3

B and D

Question 4

Name the gland which produces earwax.

Answer 4

ceruminous glands

Question 5

What is the size in diameter of the tympanic membrane?

Answer 5

1 cm

Question 6

The tympanic membrane is the partition between the _____ and ____.

Answer 6

External Acoustic Meatus and Tympanic cavity of the Middle Ear

Question 7

Name the shallow central peak of the tympanic membrane.

Answer 7

Umbo

Question 8

The tympanic membrane faces to anterior, inferior and laterally. True/False

Answer 8

True

Question 9

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

Answer 9

pars flaccid or flaccid part

Question 10

10. The external surface of the tympanic membrane is innervated by the
    a. auricular nerve.
    b. tympanic nerve.
    c. chorda tympanic.
    d. craticotympanic nerve.

Answer 10

a. auricular nerve of vagus

Question 11

The internal surface of the tympanic membrane is innervated by the

a. auricular nerve.
b. tympanic nerve.
c. chorda tympanic.
d. craticotympanic nerve.

Answer 11

b. Tympanic nerve of glossopharyngeal nerve

Question 12

Name the features on the medial wall of the tympanic cavity features.

Answer 12

Oval window, round window, promontory

Question 13

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

Answer 13

Epitympanic recess (Superior tympanic recess)

Question 14

All of the following are the contents of the middle ear, EXCEPT

a. malleus.
b. incus.
c. stapes
d. modiolus

Answer 14

d. modiolus

Also in the middle ear:
Stapedius, tensor tympani, chorda tympani, tympanic nervous plexus

Question 15

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

a. tegmental wall
b. jugular wall
c. carotid wall
d. mastoid wall

Answer 15

b. jugular wall

Know other walls

Question 16

Name the arteries which supply the pharyngotympanic tube.

Answer 16

Ascending Pharyngeal A., Middle Meningeal A., Artery of Pterygoid Canal of Maxillary A.

Question 17

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

Answer 17

Tympanic Membrane to Oval Window

Question 18

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

Answer 18

False. They are covered with the mucus membrane lining of the tympanic cavity

Question 19

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

Answer 19

Tip of the Malleus attaches to the umbo

Question 20

Which of the following describes the umbo correctly?

a. Tip of the handle of the malleus
b. Neck of the malleus
c. Tip o the handle of the incus
d. Neck of the stapes

Answer 20

a. Tip of the handle of the malleus

Question 21

The lenticular process articulates with ____________.

Answer 21

Stapes

Question 22

The tensor tympanic inserts into ___________.

Answer 22

Handle of the malleus near the neck

Question 23

The head of the malleus lies in the ______________________.

Answer 23

Epitympanic recess

Question 24

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 tympanic membrane.

Answer 24

10 times

Question 25

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

Answer 25

True. Increase force decrease amp

Question 26

The tensor tympani arises from ____, and inserts to ____________.

Answer 26

Superior surface of the cartilagenous portion Pharygotympanic tube, Greater Wing of the Sphenoid, and Petrous part of the Temporal bone ...inserts to handle of the malleus

Question 27

The tensor tympani is innervated by the ___.

Answer 27

Nerve to the Pterygoid muscle of Mandibular division of the Trigeminal

Question 28

Name the wall where the pyramidal eminence is for the stapedius muscle emergence.

Answer 28

Posterior wall of the Tympanic cavity or the mastoid wall

Question 29

The otic capsule of the internal ear contains ________, ________, and _________.

Answer 29

Cochlea, vestibule, and semi-circular canals

Question 30

The cochlea is the shell-shaped part of the bony labyrinth that contains _________ for the hearing.

Answer 30

Cochlear duct

Question 31

Name the bony core of the cochlear.

Answer 31

Modiolus

Question 32

The spiral canal of the cochlea begins at the ______ and makes ___ turns around the bony core.

Answer 32

Vestibule and makes 2.5 turns

Question 33

The bony core of the cochlea is called ___________.

Answer 33

Modiolus

Question 34

The large basal turn of the cochlea produces the _______ on the labyrinthine wall.

Answer 34

Promontory

Question 35

The large basal turn of the cochlea produces_____, which is part of the labyrinthine wall of the tympanic cavity.

Answer 35

Promontory

Question 36

Name the communicating feature between the basal turn of the cochlea and the subarachnoid space superior to the jugular foramen.

Answer 36

Cochlear aqueduct

Question 37

Name the structure, which close the round window at the basal turn of the cochlear.

Answer 37

Secondary tympanic membrane

Question 38

The vestibule of the bony labyrinth is a small oval chamber that contains the ________ and ________.

Answer 38

Utricle and saccule

Question 39

Name the feature, which communicates the vestibule to the posterior cranial fossa.

Answer 39

Vestibular aqueduct

Question 40

Name the feature, which transmits the endolymphatic duct.

Answer 40

Vestibular aqueduct

Question 41

How many openings from the semicircular canals to the vestibule?

Answer 41

5 openings

Question 42

The membranous labyrinth composed of _______ and _________.

Answer 42

Communicating sacs and ducts ( ex cochlear duct, utricle, saccule, semicircular duct, ductus reunions, utricosaccular duct)

Question 43

The vestibular labyrinth contains two small communicating sacs which are known as ______ and _______.

Answer 43

Utricle and saccule

Question 44

Name the spiral thickening of the periosteal lining of the cochlear canal, which secures the cochlear duct to the spiral canal of the cochlea.

Answer 44

Spiral ligament

Question 45

Name the feature where the semicircular ducts open through openings with hair cells.

Answer 45

Ampulla

Question 46

Name the feature where the endolymphatic duct arises.

Answer 46

Utricosacular duct

Question 47

Name the feature which connects the saccule to the cochlear duct, as a uniting duct.

Answer 47

Ductus reuniens

Question 48

The primary sensory neurons of the macula of utricle and saccule are in _____ ganglia, which are in the internal acoustic meatus.

Answer 48

Vestibular

Question 49

The cochlear duct is a spiral tube, which is firmly suspended across the cochlear canal between the _____ and ______ on the external wall of the cochlear canal and the osseous spiral lamina of the modiolus respectively.

Answer 49

Spiral ligament and osseous spiral laminae

Question 50

Name the feature of the semilunar communication at the apex of the cochlea between two perilymph-filled spiral canals.

Answer 50

Helicotrema

Question 51

Waves of hydraulic pressure created in the perilymph of the vestibule by the vibration of the base of the stapes ascend to the apex of the cochlea through the ________.

Answer 51

Scala vestibule

Question 52

Waves of hydraulic pressure pass through the apex of the cochlear and then descend back to the basal turn of the cochlea through _______ .

Answer 52

Scala tympani

Question 53

Name the receptor organ of auditory stimuli.

Answer 53

Spiral Organ of Corti

Question 54

The receptor organ of auditory stimuli is situated on the _____.

Answer 54

Basilar membrane

Question 55

The receptor organ of auditory stimuli is overlaid by _______.

Answer 55

Gelatinous tectorial membrane

Question 56

Untreated auricular hematoma might result in the _____ or ____.

Answer 56

Cauliflower or Boxer's ear

Question 57

How do you pull the helix to observe the adult’s tympanic membrane for the otoscopic examination?

Answer 57

Grasp and pull posterosuperiorly (up out and back)

Question 58

An earache and a bulging red tympanic membrane may indicate a sign of ________.

Answer 58

Otitis media

Question 59

Infection of the mastoid antrum and mastoid cells from a middle ear infection might cause inflammation of the mastoid process known as ________.

Answer 59

Mastoiditis

Question 60

Paralysis of the stapedius is associated with excessive acuteness of hearing called _____ or _________.

Answer 60

Hyperacusis or hyperacusia

Question 61

The hyperacusis results from uninhibited movements of the _______.

Answer 61

Stapes

Question 62

Motion sickness results from discordance between _______ and ________ stimulation.

Answer 62

Vestibular and visual