The Heart and Double Circulatory System
A comprehensive lesson covering the anatomy of the human heart, the pathway of blood through the double circulatory system, and the relationship between blood vessel structure and function. Students will progress from identifying parts to explaining physiological adaptations.
Learning objectives
- Identify the main structures of the heart including the four chambers and four main blood vessels.
- Explain why the human circulatory system is described as a 'double circulatory system'.
- Relate the structure of the heart's chambers and valves to their specific functions.
- Compare the structure and function of arteries, veins, and capillaries.
Lesson plan (60 minutes)
Starter · 5 min
Do Now: Recall task on the components of blood (red cells, white cells, plasma, platelets).
Introduction · 15 min
Teacher-led explainer on heart structure and the double circulatory system using the provided script and diagrams.
Modelling · 5 min
Worked example: Tracing the path of a red blood cell from the toe to the lungs.
Main Task · 20 min
Differentiated worksheet task (Support, Core, or Stretch). Students work independently.
Review · 7 min
Peer marking of worksheets using the answer key.
Plenary · 8 min
8-question multiple choice quiz to check for understanding.
Key vocabulary
- Aorta
- The main artery that carries oxygenated blood from the heart to the body.
- Vena Cava
- The main vein that carries deoxygenated blood from the body back to the heart.
- Atria (singular: Atrium)
- The two upper chambers of the heart that receive blood.
- Ventricles
- The two lower chambers of the heart that pump blood out.
- Valves
- Flaps of tissue that prevent the backflow of blood.
Core worksheet (first questions)
- List the order of structures a red blood cell passes through from the body back to the Aorta.
- Compare the thickness of the wall of the Right Ventricle with the Left Ventricle and explain why they are different.
- What is the function of the heart valves?
- Which type of blood vessel (Artery, Vein, or Capillary) contains valves?
Quiz (sample)
1. Which chamber of the heart has the thickest muscular wall?
- A. Right atrium
- B. Left atrium
- C. Right ventricle
- D. Left ventricle
2. Which vessel carries deoxygenated blood from the body back to the heart?
- A. Aorta
- B. Vena cava
- C. Pulmonary artery
- D. Pulmonary vein
3. What is the primary function of a heart valve?
- A. It pumps blood to the lungs.
- B. It prevents the backflow of blood.
- C. It carries oxygenated blood.
- D. It filters the blood.
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Support and Stretch worksheets, every answer and model answer, the teaching explainer and common misconceptions, editable and ready to print as PDF or Word.
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