Rest for two minutes. Count the number of heartbeats in 15 seconds. Draw a picture of the heart of the proper size and in the proper location on your body outline diagram. What's Happening The circulatory system of the body consists of the heart and the blood transport system. The heart acts as a pump to force the blood through a network of tubes, called blood vessels, located throughout the whole body.
More Challenges Find out how a stethoscope works.
Borrow one and listen to the heart. Make your own stethoscope. Look under your tongue using a mirror to observe living blood vessels in action. Find out how the order of how blood flows through the heart. Inc. The Magic School Bus Activity Guide, Season Three. 1996.