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