Here are the answers to the worksheet questions based on human body systems.
1.
* First blank:
respiratory (This system handles breathing and getting oxygen).
* Second blank:
circulatory (This system uses blood to move oxygen around).
2.
*
False (The body has many more than four systems, such as the nervous, skeletal, and immune systems).
3.
*
Circulatory (or Cardiovascular) system.
4.
*
Respiratory system.
5.
*
True (Digestion begins in the mouth when you chew).
6.
When pedaling a bike, the three major systems working together are:
1.
Muscular (to move the legs).
2.
Skeletal (bones provide structure and leverage).
3.
Circulatory (heart pumps blood to muscles) OR
Respiratory (lungs provide oxygen). *Note: Any combination of these active systems is correct.*
7.
*
Circulatory system.
8.
* First blank:
increases
* Second blank:
increases
9.
* First blank:
relax (The hamstring on the back/top relaxes to let the leg straighten).
* Second blank:
contract (The quadriceps on the front/bottom tighten to pull the leg straight).
10.
*
Red blood cells (Specifically, they hitch a ride on hemoglobin inside the red blood cells).
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Final Answer:
1. respiratory, circulatory
2. False
3. Circulatory system
4. Respiratory system
5. True
6. Muscular, Skeletal, Circulatory (or Respiratory)
7. Circulatory system
8. increases, increases
9. relax, contract
10. Red blood cells
Parent Tip: Review the logic above to help your child master the concept of human body adventure worksheet answers.
