Dogs Circulatory Systems

Dogs Circulatory Systems Why the heart rate increases during exercise? From the graph it shows that the heart rate of the dog increases during exercise, while the dog is exercising the heart pumps faster getting blood to the moving joints, making the dog breath faster to get the needed oxygen around the body. The dog also gets adrenalin which also makes the heart work harder and making the dog excitable. Why does it take a while to return to normal? It takes a while for the heart rate to return to normal after exercising because the dog still had adrenalin around the body and it takes awhile for the heart to stop pumping faster and for the breathing to go back to normal this is because the adrenalin needs to wear-down in the system. The dog’s circulatory and respir View the rest of this article