Which direction is the electrical driving force for Na+? 

Red blood cells, with an intracellular concentration of 300 mOsm/L nonpenetrating solutes, are placed in a solution containing 150 mM NaCl and 150 mM ethanol. What is osmolarity and tonicity of this solution? 

The CNS perceives an increase in the intensity of a stimulus in the PNS through which of the following mechanisms? 

A drug inhibits enzymes responsible for degrading neurotransmitters in the synaptic cleft would cause which of the following?

In a hypothetical cell, the equilibrium potential for K+ is -60 mV and the equilibrium potential for Na+ is +90 mV. The cell is equally permeable to K+ and Na+. Which is correct regarding the cell’s resting membrane potential?

Which of the following would happen to the volume of a cell placed in a hypotonic solution? 

The primary basis for the absolute refractory period is which of the following? 

An increase in membrane permeability to Cl- during an EPSP would result in which of the following? 

Homeostasis is best defined as which of the following? 

Decreasing the extracellular K+ concentration from 5mM to 2mM would have what effect on the resting membrane potential of a neuron?