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