This diagram covers Heart Structure and Blood Flow 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 3 of 14 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
Topic position
Section 3 of 14
Practice
20 questions
Recall
25 flashcards
Heart Structure and Blood Flow
Blood Flow Through the Heart:
- Deoxygenated blood returns from body to right atrium via vena cava
- Right atrium contracts, pushing blood through tricuspid valve to right ventricle
- Right ventricle contracts, pushing blood through pulmonary valve to pulmonary artery → lungs
- Oxygenated blood returns from lungs to left atrium via pulmonary veins
- Left atrium contracts, pushing blood through bicuspid valve to left ventricle
- Left ventricle contracts, pushing blood through aortic valve to aorta → body