Exit USMLE-STEP-1 United States Medical Licensing Step 1
Question 1 of 5
0% complete
Q1 Single choice

Gamma-aminobutyric acid (GABA) is an amino acid that functions as a neurotransmitter in the central nervous system. GABA typically causes increased chloride conductance and functions as an inhibitory transmitter. Assume that the equilibrium potential for chloride (ECl-) in a particular cell is -80 mV and that application of GABA inhibits the cell without any change in resting membrane potential.

What is the resting membrane potential of the cell?

  • A

    +80 mV

  • B

    0 mV

  • C

    -70 mV

  • D

    -80 mV

  • E

    -90 mV

Previous Next