Human Body Systems
Subject: Science · Grade level: 5th
How your heart, lungs, stomach, and brain work together every single second.
In this lesson
- Circulatory system — your delivery network
- Respiratory system — bringing in oxygen
- Digestive system — turning food into fuel
- Nervous system — your body's command center
Key terms
- Heart
- A muscle that pumps blood.
- Artery
- Vessel that carries blood away from the heart.
- Vein
- Vessel that returns blood to the heart.
Human Body Systems lesson on BrightPath
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