Why Is It Important for Potassium Ions (K+) to Move

question 211

Multiple Choice

Why is it important for potassium ions (K+) to move out of the axon once an action potential has been fired?

• A) Because their continued presence would be damaging to the tissues of the axon
• B) So that the neuron will have the ability to generate another action potential
• C) Because of the required binding with potassium (K+) to activate the refractory period
• D) In order to create a more negative charge outside rather than inside the neuron

---

Definitions:

Social Phobia

A persistent and overwhelming fear of social situations, leading to significant anxiety and avoidance that impair daily functioning.

Generalized Anxiety Disorder

A chronic disorder characterized by excessive, long-lasting anxiety and worry about nonspecific life events, objects, and situations.

Agoraphobia

An anxiety disorder characterized by an intense fear of being in places where escape might be difficult or help might not be available.

Panic Attack

A panic attack is a sudden episode of intense fear or anxiety that triggers severe physical reactions when there is no real danger or apparent cause.