7. Nerve Action Potential

Question 1

Cells in CNS
1.
2.
Ration of neuron to glial cells

Answer 1

29

Question 2

Glial cells types 
1. Macroglial cells 
a. 
b. 
c. 
2. Microglial cells 
a. 
b.

Answer 2

29

Question 3

Astrovcytes aka :-
Types
1. :- seen in
2. :- seen in

Fuction of astrocytes :-
1.
2.

Answer 3

29

Question 4

Oligodandrocytes
Function
Site :-
Multiplemyelination :-

Schwan cells :-
Function :-
Site :-
Multiple myelination

Answer 4

29

Question 5

Types of neurons with-sites 
1. 
2. 
3. 
4.

Answer 5

29

Question 6

Structures in neurons 
1.
2. 
3. 
4. 
5.

Answer 6

30

Question 7

Node of Ranvier :-
1.
2.

Answer 7

30

Question 8

Site of AP in motor neuron :-

Answer 8

30

Question 9

Site of AP in sensory neuron :-

Answer 9

30

Question 10

phases of NERVE ACTION POTENTIAL 
RMP of nerve is :-
Threshold potential firing :- 
Image 
LP :- 
I.   :-               due to :- 
II.  :-               due to :- 
III. :-               due to :-
IV. :-               due to :- 

Gaba agonist :-
Causes :-
Examples :-

Answer 10

30

Question 11

ABSOLUTE REFRACTORY PERIOD :-

RELATIVE REFRACTORY PERIOD :- from :- only :-

During depolarisation:- Na influx due to :-

Answer 11

31

Question 12

GATE CONCEPT :- 
Applicable to :- 
Stages :- 
M gate :- 
H gate :- 

Rest stage :-

Active stage :-

Inactivation stage :-

Answer 12

31

Question 13

THRESOLD STIMULUS

Answer 13

31.

Question 14

Strength duration curve :-

RHEOBASE:- ( strength)
CHRONAXIE :- ( time required )

CHRONAXIE is iverserly proportional to :-
Which has greater chronaxie :-

Answer 14

32.

Question 15

Accomodation :- ( sub )

Adaptation :- ( supra )

Answer 15

32