Given is the diagrammatic representation of impulse conduction through an axon (at points A and B). View the diagram and arrange the steps of impulse conduction
I. The polarity of the membrane at site A is reversed and depolarized, 
the outer surface becomes negatively charged and the innerside becomes positively charged, generating nerve impulse
II. A stimulus causes disturbance to the membrane at site of A nerve fibre resulting in leakage of 
ions inside the nerve fibre
III. On the outer surface, current flows from site B to site A to complete the circuit of current flow. Hence, the polarity at the site is reversed, and an action potential is generated at site B. The impulse (action potential) generated at site A arrives at site B. The sequence is repeated along the length of the axon and consequently the impulse is conducted
IV. Immediately ahead, the axon (
site B) membrane has a positive charge on the outer surface and a negative charge on its inner surface. As a result, a current flows on the inner surface from site A to site B
The correct option is
a)
I 
II 
IV 
III
b)
II 
I 
III 
IV
c)
II 
I 
IV 
III
d)
I 
IV 
III 
II
Given is the diagrammatic representation of impulse conduction through an axon (at points A and B). View the diagram and arrange the steps of impulse conduction
I. The polarity of the membrane at site A is reversed and depolarized, the outer surface becomes negatively charged and the innerside becomes positively charged, generating nerve impulse
II. A stimulus causes disturbance to the membrane at site of A nerve fibre resulting in leakage of ions inside the nerve fibre
III. On the outer surface, current flows from site B to site A to complete the circuit of current flow. Hence, the polarity at the site is reversed, and an action potential is generated at site B. The impulse (action potential) generated at site A arrives at site B. The sequence is repeated along the length of the axon and consequently the impulse is conducted
IV. Immediately ahead, the axon ( site B) membrane has a positive charge on the outer surface and a negative charge on its inner surface. As a result, a current flows on the inner surface from site A to site B
The correct option is
a)
I II IV III
b)
II I III IV
c)
II I IV III
d)
I IV III II
Question ID - 5333 | SaraNextGen Top Answer
Given is the diagrammatic representation of impulse conduction through an axon (at points A and B). View the diagram and arrange the steps of impulse conduction
I. The polarity of the membrane at site A is reversed and depolarized, the outer surface becomes negatively charged and the innerside becomes positively charged, generating nerve impulse
II. A stimulus causes disturbance to the membrane at site of A nerve fibre resulting in leakage of ions inside the nerve fibre
III. On the outer surface, current flows from site B to site A to complete the circuit of current flow. Hence, the polarity at the site is reversed, and an action potential is generated at site B. The impulse (action potential) generated at site A arrives at site B. The sequence is repeated along the length of the axon and consequently the impulse is conducted
IV. Immediately ahead, the axon ( site B) membrane has a positive charge on the outer surface and a negative charge on its inner surface. As a result, a current flows on the inner surface from site A to site B
The correct option is
a)
I II IV III
b)
II I III IV
c)
II I IV III
d)
I IV III II
|
Given is the diagrammatic representation of impulse conduction through an axon (at points A and B). View the diagram and arrange the steps of impulse conduction
I. The polarity of the membrane at site A is reversed and depolarized, II. A stimulus causes disturbance to the membrane at site of A nerve fibre resulting in leakage of III. On the outer surface, current flows from site B to site A to complete the circuit of current flow. Hence, the polarity at the site is reversed, and an action potential is generated at site B. The impulse (action potential) generated at site A arrives at site B. The sequence is repeated along the length of the axon and consequently the impulse is conducted IV. Immediately ahead, the axon ( The correct option is |
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|
a) |
I |
b) |
II |
c) |
II |
d) |
I |
I 
IV 
III