What Happens in a Squid Giant Axon When the Extracellular

question 24

Multiple Choice

What happens in a squid giant axon when the extracellular potassium concentration is increased?

• A) The membrane potential gets more positive (depolarizes).
• B) The membrane potential gets more negative (hyperpolarizes).
• C) The membrane potential stays about the same.
• D) The equilibrium potential for sodium gets more negative.
• E) The equilibrium potential for sodium gets more positive.

---

Definitions:

Mental Representation

An internal depiction of information.

Object Concept

The mental representation and understanding of objects, including their properties and how they relate to other objects.

Circular Reactions

Behaviors repeated over and over again, often observed in infant development, which serve to consolidate learning and motor skills.

Qualitatively Different

Describes items or phenomena that differ in essence or kind, not just in quantity or scale.