Grade 6 Science & Technology · Strand 1: Living things and the Environment · Human Circulatory System
Structure and Chambers of the Heart
A short Grade 6 Science & Technology lesson for the CBE curriculum, part of Living things and the Environment: Human Circulatory System. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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1. Which heart chamber has the thickest muscular wall because it must pump blood around the whole body?
- A. Right atrium
- B. Left atrium
- C. Right ventricle
- D. Left ventricle
2. What is the main job of the atria in the heart?
- A. To receive blood returning to the heart
- B. To pump blood out to the whole body with great force
- C. To stop blood from mixing between the two sides
- D. To add oxygen to the blood
3. Which chamber receives fresh, oxygen-rich blood coming back from the lungs?
- A. Right atrium
- B. Left atrium
- C. Right ventricle
- D. Left ventricle
4. What name is given to the muscular wall that divides the left and right sides of the heart?
Type your answer in the lesson.
5. The human heart has two atria and two ventricles. How many chambers does the heart have altogether?
Type your answer (in chambers) in the lesson.
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