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