given a drug or situation where a chanh the effects on the action potential of the autorhythmic cells, or action potential in a contractile cell, or contraction of a cardiac muscle cell. Practice by trying to answer the question below AFTER you have completed the remaining objectives in this handout. 1. A patient presents with tachycardia. To help alleviate this problem, the patient would mostly likely receive a drug that the action potential in a cardiac autorhythmic cell and thus a drug that FIRST THINK! 1. What does tachycardia mean? 2. So... this means to help the patient you need to slow down speed up ) the heart rate. 3. Sketch out the action potential in a cardiac autorhthymic cell 4. What causes the steep depolarization phase? 5. How can you achieve your answer to #2? NOW CIRCLE THE CORRECT ANSWER: a. prolongs... closes Cat2 channels b. shortens opens Ca2 channels c. shortens... opens Ca 2 channels d. prolongs... opens Ca*2 channels ... 2. Name the organ that contracts to create the pressure needed to move blood through the Focus

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