Read each page and do the quizzes. After you have read through the pages of the website, assess what you learned. Write a 600 word summary in your own words that identifies the main points you learned. Your summary should include at least one question and answer from each quiz. Explain your answers. Use a publishing program to create a safety poster to make workers aware of safety hazards. Go to this OSHA website on youth workers in restaurants.

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.