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