Blog

Why did the U.S. Congress oppose the Versailles Treaty (the treaty that ended World War One)?

Why did the booming 1920s end?

What were the experiences of Chinese immigrants in the western United States?

How did the global economy encourage western expansion in the United States between the 1860s-1900?

What was the primary difference between President Roosevelt’s “Big Stick” foreign policy and President Taft’s “Dollar Diplomacy”?

During the absolute refractory period the majority of sodium inactivation gates are closed and permeability to potassium is higher than at rest. 

If a neuron has low membrane conductance, it means that membrane resistance is high and that very few channels are open for a given ion.

To separate sodium and potassium currents in voltage clamp recordings you could add [toxin1] to pharmacologically block potassium currents or [toxin2] to pharmacologically block sodium currents (abbreviations ok). Name one animal you can obtain this deadly agent from [animal]. (1.5pts)

If [K+]i remains constant while we experimentally decrease [K+]o, the membrane potential will [depolarize / hyperpolarize / not change]. Why will you see this effect in Vm?  (2pts)

The glial cell type that function in maintaining the appropriate chemical environment for neuronal signaling are called ______________________________.