Anatomy of the ear

Question 1

What is the thinnest part of the skull?

Answer 1

The pterion

Question 2

What bones form the anterior cranial fossa?

Answer 2

Frontal, ethmoid and sphenoid

Question 3

What bones form the middle cranial fossa?

Answer 3

Sphenoid and temporal

Question 4

What bones for the posterior cranial fossa?

Answer 4

temporal and occipital

Question 5

What makes up the external ear?

Answer 5

Temporal bone
Elastic cartilage
Ear canal

Question 6

What is the outside of the ear called?

Answer 6

Auricle

Question 7

What lymph nodes are involved in the ear?

Answer 7

Parotid
Mastoid
Deep cervical
Superficial cervical

Question 8

What does the eustachian tube connect?

Answer 8

Middle ear cavity to the nasopharynx

Question 9

What can mimic earache?

Answer 9

Tonsilitis and pharyngitis

Question 10

What are the auditory ossicles?

Answer 10

Malleus
Incus
Stapes

Question 11

What gives the taste of the anterior 2/3rds of the tongue?

Answer 11

Chorda Tympani

Question 12

What are the muscles of facial expression?

Answer 12

Frontalis
Orbicularis oculi
Elevators of the lips
Orbicularis oris

Question 13

What’s in the internal ear?

Answer 13

Oval window to internal acoustic meatus

Petrous part of temporal bone

Question 14

What nerve helps you hear?

Answer 14

Cochlear nerve

Question 15

What nerve helps with balance?

Answer 15

Vestibular

Question 16

Where do the nerves for hearing and balance originate from?

Answer 16

Vestibulocochlear (CN VIII)

Question 17

What ducts are in the larbyrinths?

Answer 17

Cochlear duct

Semicircular ducts