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