The Amazing Circulatory System
Did you know…?
The sound that you hear when you listen to a heartbeat is actually produced when the valves between the upper and lower chambers of the heart close.
Did you know…?
“If all the blood vessels in the human body were lined up end to end, they would reach more than two times around the world” (The Body Book by Donald Silver and Patricia Wynne, 1993, page 109).
The more you know about the human body, the more you can appreciate its Designer!