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