📐 Heart Diagram Class 7

Class 7 · Interactive 3D Science Laboratory

3D LAB MODEL
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🔬 Anatomical Part

📝 Function

Click or tap any numbered label to learn about its scientific role and function.

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About Heart Diagram Class 7

The heart is a muscular, fist-sized organ located slightly left of centre in the chest, and it works as the pump that keeps blood moving through the body. It is divided into four chambers -- two upper atria and two lower ventricles -- separated by one-way valves that stop blood from flowing backward.

Why It's Important

  • Pumps blood to every organ and tissue
  • Delivers oxygen and nutrients around the body
  • Removes carbon dioxide and waste from tissues
  • Maintains blood pressure and circulation

Observation Points

  • Notice how the four chambers are separated by walls and valves
  • Follow the aorta and pulmonary artery as they leave the heart
  • Compare the thicker muscular wall of the left ventricle to the right
  • Look for the valves that stop blood flowing backward

Learning Objectives

  • Identify the four chambers of the heart
  • Explain the path blood takes through the heart and lungs
  • Describe the role of the heart's valves
  • Understand why the heart never stops beating

Summary

The heart is a four-chambered pump that keeps blood -- and the oxygen and nutrients it carries -- circulating through the entire body, non-stop, for a lifetime.

Main Parts

PartFunction
Right AtriumReceives deoxygenated blood from the body
Right VentriclePumps blood to the lungs
Left AtriumReceives oxygenated blood from the lungs
Left VentriclePumps oxygenated blood to the body
AortaMain artery carrying blood out to the body
ValvesPrevent blood from flowing backward

How It Works

Deoxygenated blood enters the right atrium
↓
Right ventricle pumps it to the lungs
↓
Blood picks up oxygen in the lungs
↓
Oxygenated blood returns to the left atrium
↓
Left ventricle pumps it out through the aorta

Explore the 3D Model

  • Drag anywhere on the model to rotate it and view it from every angle.
  • Scroll or pinch to zoom in on fine details.
  • Toggle Labels to show or hide the numbered markers, then click any label to read what that part does.
  • If available, try Advanced Labels, Exploded View, or Cross-Section in the toolbar for a deeper look at how the parts fit together.
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