I really need help with this assignment my teacher makes it so confusing for me to understand . Thank you a lot

Daily sanitizing and disinfection solutions should be made with one of bleach per quart of water. a. tablespoon b. cup c. teaspoon d. gallon

Yuan is a firefighter who provides basic first aid at accident scenes. yuan is an emergency medical

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.