Your Muscles

Questions

1. Main idea What is this passage mostly about?

   what your brain does and how to keep it healthy what your teeth does and how to keep it healthy what your muscles do and how to keep them healthy what your skin does and how to keep it healthy
2. Details What is the job of your muscles?

   to pump blood all around your body to move your body to control everything your body does to take in oxygen and get rid of carbon dioxide
3. Vocabulary What does "tendon" mean?

   the tubes that carry blood around the body a thin fiber that carries messages between the brain and the body the parts of food the body uses to grow and stay healthy a strong cord that joins a muscle to a bone
4. Cause and effect According to the passage, why does this job matter?

   Every move you make, from blinking to jumping, needs a muscle to pull on something. As sweat dries, it carries heat away and cools you down. Smaller pieces of food are easier to swallow and digest. Nutrients from food pass from the small intestine into your blood to feed every cell.
5. Details Which fact is in the passage?

   Skin is the largest organ of the body. Your body has more than 600 muscles. Your two lungs are not the same size: the left one is a little smaller to make room for your heart. In an adult, the small intestine is about 6 meters long, folded up inside the belly.
6. Inference Which habit would the author most likely recommend?

   Sleep gives the brain time to rest and to store what you learned that day. Stretching and active play keep muscles strong and flexible. Washing and sunscreen help protect your skin. Calcium from foods like milk, yogurt and leafy greens helps bones grow strong.
7. Evidence Which sentence explains how it does its job?

   Muscles can only pull, not push, so they work in pairs: one pulls a bone one way and its partner pulls it back. A dome-shaped muscle called the diaphragm pulls down to draw air in, then relaxes to push it out. Stretching and active play keep muscles strong and flexible. It is a strong muscle about the size of your fist that squeezes and relaxes without ever stopping.

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