Ear

Question 1

Innervation of the auricle

Answer 1

Lesser occipital, Auriculotemporal, Auricular branch of the vagus

Question 2

Describe the make up of the auditory canal

Answer 2

Lateral 1/3 made of elastic cartilage, Medial 2/3 made of the temporal bone, Contains hairs, sebaceous glands, and cerumiinous glands

Question 3

S+S of otitis externa

Answer 3

Pain, Discharge, and itchiness

Question 4

Borders of the middle ear

Answer 4

Roof: Tegmen tympanum
Floor: Jugular wall
Medial: Oval window
Lateral: Tympanic membrane
Anterior: Carotid wall
Posterior: Mastoid wall

Question 5

Location of the middle ear

Answer 5

Within the petrous portion of the temporal bone

Question 6

Muscles within the middle ear and their function

Answer 6

Tensor tympani and stapedius, Dampen loud sounds

Question 7

Function of the eustachain tube

Answer 7

Drain the middle ear, Equalise pressure

Question 8

S+S of otitis media

Answer 8

Pain, Rupture of the tympanic membrane

Question 9

Branch of the facial nerve passing through the middle ear

Answer 9

Chorda tympani

Question 10

Consequences of otitis media

Answer 10

Mastoiditis, Intracranial infection

Question 11

Describe glue ear

Answer 11

Otitis media with effusion, caused by blockage of the eustachian tube