Ear

Question 1

Major divisions of the ear?

Answer 1

External
Middle
Internal

Question 2

Epithelium of lateral 1/3 of external ear canal?

Answer 2

Stratified squamous keratinised epithelium with ceruminous and sebaceous glands

Question 3

Ear ossicles?

Answer 3

Malleus
Incus
Stapes

Question 4

Ear ossicles are found in which division of the ear?

Answer 4

Middle

Question 5

Found between external and middle ear?

Answer 5

Tympanic membrane

Question 6

Parts of pinna?

Answer 6

Tragus 
Meatus 
Helix 
Antihelix 
Concha

Question 7

Wax is produced by?

Answer 7

Ceruminous and sebaceous glands

Question 8

Epithelium of inner layer of tympanic membrane?

Answer 8

Pseudostratified ciliated columnar epithelium with goblet cells

Question 9

Number of layers in tympanic membrane?

Answer 9

Three

Question 10

Epithelium of outer layer of tympanic membrane?

Answer 10

Stratified squamous keratinising epithelium

Question 11

Function of ossicles?

Answer 11

Conduct sound from tympanic membrane to inner ear

Question 12

Functional divisions of external ear?

Answer 12

Pinna

External auditory meatus

Question 13

Structure attaching tympanic membrane to surrounding temporal bone?

Answer 13

Fibrocartilaginous ring

Question 14

Handle of the malleus attaches to the tympanic membrane at?

Answer 14

The umbo

Question 15

Vessel supplying external ear?

Answer 15

External carotid artery

Question 16

Bone housing middle ear?

Answer 16

Temporal bone

Question 17

Ossicle resembling hammer?

Answer 17

Malleus

Question 18

Ossicle resembling stirrup?

Answer 18

Stapes

Question 19

Ossicle resembling anvil?

Answer 19

Incus

Question 20

Part of malleus attaching to tympanic membrane?

Answer 20

Handle of malleus

Question 21

Structures connected by stapes?

Answer 21

Oval window of inner ear

Incus

Question 22

Spaces connected by eustachian canal?

Answer 22

Middle ear

Nasopharynx

Question 23

Function of eustachian canal?

Answer 23

Equalisation of pressure in middle ear with external auditory meatus

Question 24

Part of temporal bone housing inner ear?

Answer 24

Petrous part

Question 25

Two main components of inner ear?

Answer 25

Bony labyrinth

Mechanical labyrinth