Define electrocardiogram
A) An electrocardiogram is a color-enhanced digital scan of the heart.
B) An electrocardiogram is an ultrasound of the heart.
C) An electrocardiogram allows physicians to see blood flow through the heart.
D) An electrocardiogram is a recording of the electrical activity of the heart.
E) An electrocardiogram is a recording of the contractile activity of the heart.
Answer: D
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Baron von Quacko, famous tag-team heavyweight wrestler, has a famous "sleeper hold" that he uses on opponents. Using only a single digit on each hand, he presses on his opponent's neck (while he has them in a full nelson) until his opponent passes out. What are the structures on which he is pressing, and what is the effect?
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