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