A) transportation of nitrogen throughout the body B) transportation of food, water and oxygen to tissues and cells C) elimination of carbon dioxide from tissues and cells D) elimination of waste from tissues and cells
A) around B) away from C) toward D) all over
A) toward B) all over C) around D) away from
A) aorta B) capillary C) vein D) artery
A) white blood cells B) red blood cells C) platelets D) plasma
A) white blood cells B) red blood cells C) plasma D) platelets
A) red blood cells B) platelets C) white blood cells D) plasma
A) ventricle B) vena cava C) aorta D) atria
A) ventricle B) vena cava C) aorta D) atria
A) lungs B) liver C) brain D) heart
A) temperature regulation B) storage of fat and calcium C) transport oxygen D) protect against infection
A) excretory system B) digestive system C) respiratory system D) skeletal system
A) plasma B) atria C) ventricles D) valves
A) 1 pump B) 2 pumps C) 4 pumps D) 3 pumps
A) oxygen and hydrogen B) nitrogen and oxygen C) oxygen and carbon dioxide D) hydrogen and carbon dioxide |