00:00What part of the human body is like a battery because it stores energy?
00:07The liver. What part of your body has the most bones?
00:15Your hands. What is the hardest substance in the human body?
00:24Tooth enamel. What is the only part of the human body that can't heal itself?
00:36Teeth. What part of your body grows faster than any other part?
00:45Hair. What is the largest organ in the human body?
00:53The skin. What part of the body is often referred to as the voice box?
01:01The larynx. What part of your body has the fastest growing cells?
01:11The hair. What is the smallest bone in the human body?
01:19The stapes in the ear. What part of the body contains the most water?
01:26The brain.
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