A)the respiratory system controls and the circulatory systems controls 1.antibodies; digestion 2.breathing; blood flow 3.muscles; bones 4nerves; senses b)which of the following functions as part of the excretory and respiratory systems? 1.blood 2.heart 3.intestines 4.lungs read the following summary, which describes a body process. then, answer the question. blood enters the right side of the heart and travels to the lungs. there, the lungs eliminate carbon dioxide and exchange it for more oxygen. the oxygen-rich blood enters the left side of the heart. then, arteries carry blood away from the heart. c)what process is being described? 1.circulation 2.excretion 3.immune response 4.respiration d)how are the respiratory and circulatory systems similar? 1.both systems provide glucose and other substances to cells. 2.both systems regulate blood flow throughout the body. 3.both systems remove carbon dioxide from the body. 4.both systems send messages to the nervous system for breathing.