A by-product of involuntary muscle contraction and relaxation is:

Your patient is a 38-year-old man who was pinned beneath the frame of a vehicle when it slipped off the makeshift jacks he was using to elevate it. The patient's brother thinks he may have been trapped for up to 20 minutes. The rescue unit is preparing to use airbags to lift the vehicle off the patient. Which of the following medications could you consider giving this patient?

A) Magnesium sulfate B) Calcium chloride C) Sodium bicarbonate D) Potassium chloride

Define each of the following terms:

myasthenia