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