The Human Heart & Circulation
Four chambers, one beautifully simple loop.
Class 9–10 · Beginner · English · 2 lessons · 30 min
By the end you should be able to
- Name the chambers, valves and major vessels
- Trace blood through the heart in order
- Explain double circulation
Key points, lesson by lesson
Module 1 · Structure
The four chambers of the heart · 14 min
Name the four chambers and the job of each one.
- Four chambers: two atria (receive) and two ventricles (pump).
- Right side → lungs; left side → body.
- The left ventricle is thickest because it pumps furthest.
Module 2 · Circulation
Following one drop of blood · 16 min
Describe the path of blood through the heart, lungs and body in order.
- Body → RA → RV → lungs → LA → LV → body.
- Valves keep blood moving one way.
- Blood passes through the heart twice per circuit.
Before you start: None
skillspring · Lesson content by SkillSpring. Printed for personal study.