Lesson 21 ·Class 6 · The Circulatory System · Label Lab
Label the Four-Chambered Heart
Atria on top, ventricles below, and the great vessels that enter and leave.
Tap any part of the diagram to learn its name and its job. Try: The two collecting chambers are on top; the two pumping chambers are below.
Free play — explore the diagram, or switch to "Label it yourself" and place every label. Switch to when you're ready to test yourself.
Atria (thin, top) receive blood; ventricles (thick, bottom) pump it out. The aorta is the biggest artery.
What this lesson covers
What you do
- The two collecting chambers are on top; the two pumping chambers are below.
The parts you label
- Vena cava — Big vein bringing used blood back to the heart.
- Pulmonary artery — Carries blood from the heart to the lungs.
- Aorta — The largest artery — carries blood to the whole body.
- Right atrium — Upper chamber that receives used blood from the body.
- Left atrium — Upper chamber that receives fresh blood from the lungs.
- Right ventricle — Pumps used blood to the lungs.
- Left ventricle — Thick pump that pushes fresh blood to the body.
Challenges to clear
- Tap the thick chamber that pumps blood to the whole body.
- Tap the largest artery leaving the heart.
- Tap the chamber that receives used blood from the body.
- Label all four chambers and the great vessels.
Hint
Atria (thin, top) receive blood; ventricles (thick, bottom) pump it out. The aorta is the biggest artery.