Chapter 1 - End Chapter Quiz

The skeleton supports and protects our body.

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We can move our body without the help of muscles.

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It is important to move our bodies to keep healthy.

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A vertebrate has no backbone.

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A key can be used to identify living things.

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An exoskeleton is found on the outside of an animal such as a crab.

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Which part of the skeleton protects the brain?

Circle the correct answer.

________________ are needed for movement

Muscles in our arms ____________ and relax to move up or down.

When we exercise and move our bones and muscles, they become __________.