1. Draw a timeline marking the time each of the 11 blue men presented symptoms. Explain the point of mapping out the incident timeframe (i. e. why would epidemiologists need this information and how would it be used)

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.

Which disease could be possibly prevented through the use of regular physical exercise? a: cirrhosis b: asthma c: gout d: type 2 diabetes

The best time to go swimming is: a. directly after eating b. when you are feeling rested and energetic c. when you are feeling tired and sluggish d. a half hour after eating