Journeys: Blood vessels. Stop 5

Traffic controller

Parts of the body are asking for blood! When something blinks, swipe from the heart towards it, and the blood will flow there.

The blood arrived! Where there is work, the vessels get wider.

Oh, too late. Watch what blinks.

The body is working hard! Faster!

When you run, blood flows to your legs, when you eat, to your stomach, and when you think, to your brain. The body opens the roads it needs by itself.