During the Firing of a Nerve Cell, the Membrane Potential

question 30

Multiple Choice

During the firing of a nerve cell, the membrane potential rises above -70 mV. The equilibrium ratio of the concentration of Cl^- ions in axoplasm to interstitium before the pulse arrives is 0.072. In which direction will the Cl^- ions flow during the passage of the pulse?

• A)They will flow from interstitium to axoplasm.
• B)They will flow from axoplasm to interstitium.
• C)No migration of Cl^- ions takes place.
• D)As the system is no longer in equilibrium, we cannot use Nernst's equation to determine the direction of flow

Recognize the organizations that provide CPR training.

Understand the symptoms and first aid treatment for heat exhaustion.

Know the sequence and importance of CPR and AED application in cardiac arrest.

Understand the procedure for making emergency calls and providing assistance until EMS arrives.

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Definitions:

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