The Heart: Your Body's Tireless Pump
Part of The Heart and Circulation — GCSE Biology
This introduction covers The Heart: Your Body's Tireless Pump within The Heart and Circulation for GCSE Biology. Heart structure, cardiac cycle, blood vessels, double circulation, heart rate control, and cardiovascular health It is section 1 of 14 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 1 of 14
Practice
20 questions
Recall
25 flashcards
🫀 The Heart: Your Body's Tireless Pump
Every minute of your life, your heart beats about 70 times, pumping 5 litres of blood around your body. In just one day, your heart will beat over 100,000 times and pump enough blood to fill a small swimming pool. This incredible muscle never rests, working 24/7 to deliver oxygen and nutrients to every cell in your body.
The story of circulation began when early scientists noticed that blood seemed to "flow" rather than just sit still in vessels. William Harvey's revolutionary experiments in the 1600s proved that blood circulates in a closed loop, powered by the heart as a muscular pump. Today, we know the heart and circulation system is one of the most sophisticated delivery networks on Earth.