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Body Systems Texting Fun

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Body Systems Texting Fun

Read the body-system messages and use the clues to solve each challenge. Body systems work together to keep the body alive and active. Answer every question; use complete sentences when asked.

A Busy Game-Day Body

At the start of a soccer game, Caleb’s eyes spot the ball. Her nervous system carries messages from her eyes to her brain, then sends instructions to her muscles. Her muscles contract to run and kick. As she exercises, her respiratory system brings oxygen into her lungs, and her circulatory system carries oxygen in the blood to working muscles. The heart pumps faster to move blood around the body. After the game, the digestive system continues breaking food into nutrients the body can use. In the body, cells form tissues, tissues form organs, and organs work together in organ systems. A group of similar cells working together forms a tissue.

Decode the Messages

Use the passage to answer Questions 1–6.

1.Put these levels of body organization in order from smallest to largest: organs, cells, organ systems, tissues.
2.Choose the best reply to this message from Caleb’s brain: “I spotted the ball—move my leg!”
  • The nervous system sends instructions to the leg muscles.
  • The digestive system sends nutrients directly to the ball.
  • The respiratory system contracts the leg muscles.
  • The circulatory system sees the ball and decides where to kick.
3.Complete the message: A group of similar cells working together forms a .
4.Which system brings oxygen into the lungs, and which system carries that oxygen in blood to the muscles?
5.True or false: The heart is part of the circulatory system and pumps blood around the body.
TrueFalse
6.Match each system to its main job in the game-day story.
  • Nervous system
  • Muscular system
  • Respiratory system
  • Circulatory system
  • Contracts to move the body
  • Carries messages and instructions
  • Brings oxygen into the lungs
  • Moves blood and oxygen around the body

Think Like a Body-Systems Coach

Use evidence from the story and the relationships between systems to solve the next challenges.

7.Caleb begins sprinting. Explain why her breathing and heart rate may increase, and how this helps her working muscles.
8.A message says, “I break food into smaller parts so the body can use nutrients.” Which system sent it?
  • Digestive system
  • Nervous system
  • Muscular system
  • Respiratory system
9.Imagine the nerves could not send a message to Caleb’s leg muscles when she sees the ball. What would likely happen to her kick? Explain the connection between the two systems.
10.Write a short two-message exchange between the respiratory and circulatory systems during exercise. Each message must accurately describe how that system helps the muscles.
11.A classmate says, “Only one body system is needed to run and kick a soccer ball.” Use two examples from the game-day story to explain why this claim is incorrect.

3 printable pages

  • Body Systems Texting Fun, page 1 of 3: A Busy Game-Day Body, Decode the Messages

    Page 1

  • Body Systems Texting Fun, page 2 of 3: Think Like a Body-Systems Coach

    Page 2

  • Body Systems Texting Fun, page 3 of 3: 10. Write a short two-message exchange between the respiratory and circulatory systems…

    Page 3

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