halfbakedi420
One thing to remember, the heart has nothing to do with movement of the body. The heart/lungs supplies oxygenated blood the brain, organs, and muscles. If you had a way to oygenate the blood and move it through the body you would not need a heart, such as a mechanical heart.
If the blood in the brain and muscles contains oxygen at the time the heart quits, the brain still functions for awhile and it will send meassages to the muscles to flee and the muscles do until the oygenated blood is used, as circulation has been interuppted.
Another example might be when the heart quits - you can still circulate oxygenated blood be doing chest compressions or other forms of heart massage.
Be sure if the animals heart is blown up, the animal is dead - but the brain does not know it for awhile.