Biology Cardiovascular system by ClassOf1


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									              Sub: Biology                                                                            Topic: Cardiovascular system

              Fill in the blanks based question on cardiovascular system

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              1. A rapid beat of the heart over 100 beats per minute is called ______. A beat slower than 60 is
              called ______. Lack of adequate blood to the heart is called ______. Rapid shuddering of the
              heart muscle is called ______.

              2. An EKG usually shows three key waves, the ______, the ______ and the ______. The largest
              is the ______, which results from the ______ contracting. 
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