What Can Happen When GABA Binds to Its Receptor

Question

What can happen when GABA binds to its receptor?
A) Neural signaling is inhibited.
B) Sodium ions enter the cell.
C) New signals are transmitted.
D) Muscle contraction is stimulated.
E) Enzyme-linked receptors are activated.

Accepted Answer

GABA (gamma-aminobutyric acid) is the primary inhibitory neurotransmitter in the brain. When GABA binds to its receptors, it typically results in the opening of ion channels that allow negatively charged ions (such as chloride ions) to enter the neuron. This influx of negative charge makes the neuron less likely to fire an action potential, thereby inhibiting neural signaling.