In Adult Neurons, There Is a Higher Concentration of Chloride

question 26

Multiple Choice

In adult neurons, there is a higher concentration of chloride outside the cell than inside the cell. During development intracellular chloride concentrations are much higher such that GABA causes excitation of the postsynaptic neuron. Why could changing the Cl^- concentration result in excitation?

• A) E_Cl is now > action potential threshold.
• B) E_Cl is now < action potential threshold.
• C) There is a smaller Ca²⁺ conductance.
• D) Higher concentrations of Cl^- modulate the GABA_R single channel conductance.

---

Definitions:

Gratuitous Bailment

An arrangement where one party (the bailor) entrusts their property to another (the bailee) without expecting any payment in return, solely for the benefit of the owner.

Legal Obligation

A duty bound by law that requires an individual or entity to act or refrain from acting in a certain way.

Family Heirloom

A valuable object that is passed down from generation to generation within a family, often carrying sentimental value.

Natural Resource Development

The process of cultivating, extracting, and managing natural resources such as minerals, oil, and timber for economic gain.