Choose 1 of the following questions to answer by day 3 (Wednesday) and include 2 references (in APA format). Your post should be at least 250 words. Please remember to answer to 2 of your classmates’ discussions (on 2 separate days) by Saturday.  The reply to your classmates should be at least 100 words each.  The references are not included in the word count!Discussion Question (DQ) 1Please explain the purpose of the four heart valves, and describe their structure and locations.Discussion Question (DQ) 2What is the function of the heart? Please trace a drop of blood from the inferior vena cava (IVC) to the lungs and then from the lungs to the aorta. (Do not forget to include the valves).

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