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Practice Listening: Fill in the Blanks (Type In)
ID: #4707
Short
Bones
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When a human baby is born, it has about 270 bones. As he or she grows, these bones become bigger and harder and some of them will together. As such, a fully grown adult skeleton has fewer bones than an infant skeleton—just 206. It could be argued that the most important part of the human skeleton is the skull. The 22 bones found there act as a kind of that protects the brain. The smallest human bone is also found here. It is called the stapes and it is part of the ear. It 2.5 to 3.3 millimetres in length.
The only part of the skull that humans can move is the jaw, which is made up of two bones, the mandible and the maxilla, and forms the of the mouth.
The only part of the skull that humans can move is the jaw, which is made up of two bones, the mandible and the maxilla, and forms the of the mouth.
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