Q • Question 1 1.6 out of 2 points Describe how the heart as a muscle does its job of pumping blood. What happens if the cardiac muscle itself does not get enough blood? • Question 2 3.2 out of 4 points Using your knowledge of cardiac circulation, explain the flow of blood through the heart (Figure 12.1). What would cause Aunt May's weakness and shortness of breath during her sudden attack? • Question 3 2 out of 2 points What is the job of the coronary arteries? What happens to their ability to do their job if they become narrowed by fatty or mineralized deposits? • Question 4 1 out of 1 points Why are the coronary arteries so easily blocked by floating embolisms?
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