Figure 12-2 The Nerve Action Potential

Use Figure 12-2 to answer the following questions:
-Which point of the graph shows when potassium ion outflow exceeds sodium ion inflow?
A) 1
B) 2
C) 3
D) 4

Question

Figure 12-2 The Nerve Action Potential
 
Use Figure 12-2 to answer the following questions:
-Which point of the graph shows when potassium ion outflow exceeds sodium ion inflow?
A) 1 
B) 2 
C) 3 
D) 4

Quizplus · Accepted Answer

Point 3 shows when potassium ion outflow exceeds sodium ion inflow, resulting in a repolarization phase where the membrane potential becomes more negative.

Figure 12-2 the Nerve Action Potential