$$\text { Figure } 6 ' 3$$ -If the Current Is 12 MA in Figure 6-3

question 44

Multiple Choice

$$\text { Figure } 6 ' 3$$
-If the current is 12 mA in Figure 6-3, what is the value of V_EB ?

• A) 240 V
• B) -360 V
• C) -240 V
• D) 360 V

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Definitions:

Action Potential

A rapid change in the electrical charge across a cell membrane that results in a nerve or muscle cell firing.

Positive Feedback Cycle

A process where the end products of an action cause more of that action to occur in a feedback loop, amplifying the original action.

Sodium-Potassium Exchange Pump

A membrane-bound enzyme complex that pumps sodium out of cells while pumping potassium into cells, crucial for maintaining cellular concentration and electrical gradients.

Afterpotential

The transient changes in membrane potential that follow an action potential, including hyperpolarization or depolarization phases, affecting neuron's firing rate.