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