Diagram pack
Human Heart and Blood Flow
Learn chamber layout, vessel names, and oxygen-rich vs oxygen-poor flow — the diagram every biology and health class expects.
The heart is a double pump that moves blood through lungs and body.
Content quality
Content quality
- Quality
- School-ready
- Review
- Review approved
- Age suitability
- Upper secondary
- Safety
- Use with supervision
- License
- Original content
Simplified educational diagram, not medical advice. Use with teacher guidance in class.
Teacher note: Simplified educational diagram, not medical advice. Use with teacher guidance in class.
Last reviewed: 5/1/2026 · Next: Review before embedding external OER figures.
- Simplified educational diagram, not medical advice. Use with teacher guidance in class.
Curriculum alignment
Aligned for classroom support — not official national syllabus certification.
Cameroon · O Level · Biology · Heart and blood flow · GCE O Level
Cameroon · Anglophone / Francophone schools
O Level · Biology · Heart and blood flow · GCE O Level
Mapped to common school topics — aligned for classroom support, not official syllabus certification.
International · General STEM
O Level · Biology · Heart and blood flow
Global STEM foundation support for diagrams and practice.
What you will understand
The heart is a double pump that moves blood through lungs and body.
What you will draw
A four-chamber heart with vessels and color-coded flow arrows.
What you will write
Key terms: atria, ventricles, aorta, oxygen-rich, oxygen-poor.
Where you will use it
Exercise, heart rate monitors, and first-aid all use this map.
Key vocabulary
- Atria
- Ventricles
- Aorta
- Vena cava
- Pulmonary artery
- Pulmonary vein
- Valves
Flow stages
- 1
Outer shape
Sketch the heart outline and major curves.
- 2
Chambers
Divide into four chambers with correct left/right.
- 3
Vessels
Add aorta, pulmonary arteries, and venae cavae.
- 4
Flow arrows
Color and arrow oxygen-rich vs oxygen-poor paths.
Drawing steps
Drawing steps
- Sketch symmetrical outer heart shape.
- Add four chambers — mind left/right on the page vs body.
- Draw aorta arch and pulmonary vessels.
- Arrow blue deoxygenated and red oxygenated paths.
- Label valves at chamber exits.
Application
Flow
- Body → RA → RV → lungs → LA → LV → aorta → body
Real-life application
- Why does your heart beat faster when you run?
- Where does oxygen-rich blood go after leaving the left ventricle?
Common mistakes
Common mistakes to avoid
- Swapping left and right on paper
- Missing valves
- Arrows crossing without logic