Anatomy Of Inner Ear

Question 1

Structures of scala media

Reissners Membrane separates :-
Basilar membrane separates :-

Stria  vascularise :- 
Site of endolymph production :- 
 Perlilymph is present in :- 
Production of endolymph :- 
Channel :- 
Electrical potential :- 

In perilymph :- Na is high
In endolyph :- k+ is high

Furosemide ( loop diuretics ) :-

In endolymph electro chemical gradient in urticaria and saccule is maintained by :-

Answer 1

35-36

Question 2

Ototoxic drugs :-

Organ of corti present on basilar membrane has :-
Inner cell
Outer cells :-

In cristae & macula :- type 1 and 2 hair cells

Ototoxic drugs are :-
AVCD :-

Aminoglcosides 
Cochleotoxic drugs :- 
Acts on :- 
KAN :- 
Most ototoxic drug is :- 

Vestibulotoxic drugs :- 
Acts on :- 
Example :- 
Most specific :- 
Use :-

Answer 2

36

Question 3

Organ of corti hair cells :-

Inner hair cells vs outer hair cells

1. Arrangement :-
2. Numbers
3. Damage :-
4. Type of nerve

Produce :- oto aucoustic emission :-

Transduction :- read 
Sterocilia 
K+ moves from :- 
Voltage gated :- 
Excitatory neurotransmitter :- 

Auditory pathway( read ) 
Starts with :- 
S
L
I
M 
Auditory cortex area no :- 
Area :- 

The auditory pathway are inter connected :-

Superior Oliver’s complex :-

1. Starting point for :-
2. Center for :-

Answer 3

38-39

Question 4

Structures of Cristae & Maculae :-
Cristae in SCC
Macules in utricle and saccule

Type 1 hair cells :-
Type 2 hair cells :-

In maculae :- hair cell projects into:-
Covered by :-
Called otholith made up of :-
Responsible for :-

Linear acceleration is maintained by :-

Following trauma :-
MC in which SCC :-

BPPV :-
MCC of vertigo :-
CF :-

Answer 4

40

Question 5

Vestibular pathway :-
Starts from :-
By :- pass through :-
Maintain :-

Structures present in internal acoustic meatus :- image :-
Bills bar separates :-

Internal acoustic meatus :-

Facial nerve and vestibulocochlear nerve passes through :-

Internal acoustic meatus
Superior part :-
Inferior part :-

Singular nerve supplies :-

Acoustic neuroma :- 
MC benign tumor of CP angle :- 
Arise from :- 
If upper pole involved nerves :- 
If lower pole nerve involved :-

Answer 5

42

Question 6

Nerve supply of pinna :-

In inner ear :-

In pinna and EAC :- 
G:-( lateral & medial ) 
O:-small part posteriorly 
A:- tragus and small part of helix 
A:-

Arnold nerve / ardlerman s nerve is branch of :-

Nerve supply of EAC :-

Nerve supply of TM :-
Lateral surface :-
Medial surface :-

Referred pain of pinna :-
G:-
O :-

Arnold’s nerve to :-
Glossopgaryngeal nerve to :-

Aldermans Nerve :- aka :- Arnold’s nerve :-

Answer 6

43