The Heart and Circulation
Heart structure, cardiac cycle, blood vessels, double circulation, heart rate control, and cardiovascular health
What you'll cover
- Four-chamber heart structure
- Atria and ventricle functions
- Heart valves preventing backflow
- Cardiac cycle: systole and diastole
- Double circulation: pulmonary and systemic
- Coronary arteries supplying heart muscle
- Pacemaker cells and electrical control
- Heart rate regulation by nervous system
- Effects of exercise on heart rate
- Cardiovascular disease risk factors
- Stents, bypass surgery, and heart transplants
Study this topic
The Heart: Your Body's Tireless Pump
Heart Structure and Blood Flow
The Cardiac Cycle: How Your Heart Beats
Double Circulatory System
Blood Vessels: Structure and Function
Blood Pressure and Cardiovascular Health
How It Works: Why the Left Ventricle Has Thicker Walls
Key Definitions
Coronary Heart Disease (CHD)
Key Facts: Heart and Circulation
Common Misconceptions
Memory Aids
Exam Focus
Exam Tips
Knowledge Organiser
Sample Flashcards
Sample Questions
How many chambers does the human heart have?
Explain how the structure of an artery is related to its function.
20
exam-style questions
25
revision flashcards
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