Bring oxygen to cells and take carbon dioxide away\
a: white blood cells
b: red blood cells
c: platelets

How does modernization affect ecosystem

Trustworthy health-related websites should be frequently reviewed by medical professionals, even if the content doesn't change. select the best answer from the choices provided. t f

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.