Charles is an engineer who is evaluating a prototype of an artificial heart. The prototype beats in a synchronized fashion, is h
ollow, and had tubes attached to it. It can be powered by electrical signals from the brain when it is interfaced with the appropriate nerves. What important feature should Charles notice the prototype is missing ?
<span>The prototype is missing a speed control mechanism. A natural heart can adjust the rate at which it pumps blood around the body - for example, it beats quicker during exercise. As such, the artificial heart needs a monitor that regulates how fast the blood needs to be pumped around the body to maintain a sufficient supply to muscles.</span>
