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