17. Hearing , Smell, Taste

Question 1

Ear has 2 functions :-
1.
2.

Answer 1

67

Question 2

Cochlea :-
Two membrane divides cochlea into 3 parts :-
Endolymphatic potential :-

Na is more in :-
K is more in

Answer 2

67

Question 3

Scala media 
Organ of corti 
Types of cells present 
1. 
2. 
Cells which are more susceptible to ototoxic drugs :- 
These receptors are innervated by :- 
Originate from :- 

Difference between inner hair cells and outer hair cells :-

Answer 3

68

Question 4

Kinocillium :-

Stereocilia :-

Hair cells that bends towards kinocillium :-
Due to :- ………. from ……..
Direction of current :-
Otoacoustic emission is also known as :-
Kemp waves :-

Hair cells bends away from kinocillium causes :-

Answer 4

69

Question 5

Auditory pathway :-

E
C
O
L
I
M
A

Answer 5

69

Question 6

Auditory cortex is present in :%

Human auditory cortex aka :-

Answer 6

69

Question 7

Travelling wave theory of BEKESY
All sound waves travel along :-
High frequency sound waves :-
Low frequency sound waves :-

Answer 7

70

Question 8

Stapedial Reflex :-
Loud sound :-
Thus preventing :-

Pathway:-
Afferent :-
Center :-
Efferent :-

Lesion of CN 7 :-
Leads to :-

Answer 8

70

Question 9

Olfaction

Olfactory receptors :-
Bipolar neurons :-

Answer 9

70-71

Question 10

Olfactory Bulb :-
1st part :-

Cells of olfactory bulb :-

1. Mitral cells :-
2. Tufted cells :-
3. Periglomerular cells :-
4. Granule cells :-

Answer 10

71

Question 11

Olfactory bulb :-

Olfactory :- thalamus relay in nucleus :-

Cortex :-

Answer 11

71

Question 12

Limbic Cortex ( smell brain )

1. Amygdala :-
2. Entorhinal cortex :-

Answer 12

71

Question 13

Degeneration of entorhinal cortex :-

Answer 13

71

Question 14

Taste :- 
5 taste sensation :- 
1. 
2. 
3. 
4. 
5. 
Most addictive sensation :-

Answer 14

72

Question 15

Taste pathway :-

Taste buds are innervated by :-
Anterior 2/3 :-
Posterior 1/3 :-
Posterior most and palatial region :-

Relay in :-
Nucleus :-
In thalamus :-
Taste cortex is :-

Answer 15

72