About this video
The doctors on Operation Ouch show you how your muscles work! They do experiments and even help a patient with a stone in his head.
🧠 Quiz & Trivia
Test your knowledge after watching!
Q1 What are muscles made of?
Answer: Fibers
Q2 Where did Harry get the stone stuck in his head?
Answer: The playground
Q3 What do blood vessels deliver to your muscles?
Answer: Energy
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