What is the difference between communicable and noncommunicable diseases?

Communicable diseases can be treated, noncommunicable diseases can not.

Communicable diseases are caused by pathogens while noncommunicable diseases are not.

Communicable diseases are hereditary, noncommunicable diseases are not.

Communicable diseases are not caused by pathogens while noncommunicable diseases are.

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.