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