1. Body Systems Questions
5th Grade
Body Systems Questions

2. 1. Which is a major organ of the circulatory system? A brain B heart
C kidney
D stomach B

3. 2. Which system protects the cardiovascular system? A skeletal system
B nervous system
C digestive system
D circulatory system A

4. 3. Which system moves blood around the body? A nervous B digestive
C muscular
D circulatory D

5. 4.
Why is the digestive system important? A It transports blood that cells need. B It provides oxygen that cells need. C It provides nutrients that cells need to produce energy. D It carries carbon dioxide and oxygen away from the body. c

6. 5.
How do the muscular and skeletal systems work together to help the body?
A They provide blood to the body.
B They provide nutrients to the body.
C They provide structure and movement for the body.
D They provide oxygen and carbon dioxide to the body. c

7. 6.
How is the respiratory system different from the cardiovascular system?
A The respiratory system aids in digestion, while the cardiovascular system aids in muscle strength.
B The cardiovascular system aids in digestion, while the respiratory system aids in muscle strength.
C The cardiovascular system aids the lungs, while the respiratory system aids the heart, veins, and arteries throughout the body.
D The respiratory system aids the lungs, while the cardiovascular system aids the heart, veins, and arteries throughout the body. D

8. 7. Which best describes the role of the respiratory system?
A It helps people stand upright.
B It helps people eat and digest different foods.
C It helps people transport blood throughout their body.
D It helps people breathe in oxygen and breathe out carbon dioxide. d

9. 8. Which best describes the purpose of the respiratory system?
A to supply oxygen to cells
B to supply protection to organs
C to supply food and nutrients to the body
D to supply blood to the brain and muscles A

10. 9. Which system produces red blood cells? A skeletal B nervous
C digestive
D circulatory a

11. 10. How does the skeletal system benefit the digestive system?
A It protects organs within the system.
B It supplies blood to organs within the system.
C It provides oxygen to organs within the system.
D It provides nutrients to organs within the system. a

12. 11.
Which two human body systems work closely together to distribute nutrients from food throughout the body?
A muscular and skeletal
B digestive and circulatory
C circulatory and respiratory
D cardiovascular and digestive b

13. 12.
Which two body systems work together to take in oxygen and release carbon dioxide?
A muscular and skeletal
B digestive and circulatory
C respiratory and muscular
D circulatory and respiratory D

14. 13.
#13 Ans: A
Which best describes the way the digestive and muscular systems are related?
A Swallowed food is pushed through the esophagus. B The diaphragm, above the intestines, inflates and deflates.
C Nutrients are transported to the bones to help them function. D The heart absorbs oxygen and nutrients from various parts of the body.

15. 14.
Which statement best summarizes the relationship between the muscular system and the cardiovascular system?
A The heart is protected from injury by the breastbone.
B Nutrients are carried to the heart through arteries and veins.
C Messages are carried by nerves between the brain and the heart.
D The heart contracts and expands as it pumps blood throughout the body. d

16. 15.
Which task in the human body is accomplished through the combined efforts of the cardiovascular and muscular systems?
A protecting major body organs
B pumping blood throughout the body
C releasing waste products from the body
D moving water and nutrients from one organ to another b

17. 16.
Which best explains the effects of exercise on the respiratory system?
A Exercise increases breathing rate which makes the lungs stronger.
B Exercise increases breathing rate which makes the bones stronger.
C Exercise decreases breathing rate which sends more oxygen to the brain.
D Exercise decreases breathing rate which produces more wastes for the kidneys to process. a

18. 17. Which best describes the circulatory system?
A It protects the major organs of the body.
B It breaks food into nutrients for the body.
C It sends messages to the brain to protect the body.
D It transports oxygen-rich blood throughout the body. d

19. 18. Which best describes the purpose of the muscular system?
A The muscular system carries messages from the brain to the bones to move the body.
B The muscular system keeps the bones strong and protects them from being broken.
C The muscular system produces energy the body needs to be able to move.
The muscular system allows movement of bones and helps maintain posture. d

20. 19. Which two systems work together to help a person stand erect?
A skeletal and muscular
B skeletal and digestive
C skeletal and respiratory
D skeletal and cardiovascular a

21. 20. Which is responsible for providing oxygen to cells?
A skeletal system
B digestive system
C muscular system
D circulatory system d

22. 21.
Which best compares the respiratory system to the circulatory system?
A The respiratory system transports oxygen to cells, while the circulatory system provides oxygen for cells.
B The respiratory system provides oxygen for cells, while the circulatory system transports oxygen to cells.
C The respiratory system breaks down food for cell energy, while the circulatory system rids the body of waste.
D The respiratory system rids the body of waste, while the circulatory system breaks down food for cell energy. b

23. 22. Which is an example of a function the muscular system performs?
A Voluntary muscles pump blood through the body.
B Skeletal muscles keep a body’s joints working properly.
C Cardiac muscles move bones and hold a body’s skeleton in place.
D Smooth muscles help move food through the organs they surround. 22

24. 23. Which best describes the purpose of the cardiovascular system?
A It delivers blood to the body’s tissues.
B It supplies stability to the skeleton.
C It delivers food to power the body.
D It supplies oxygen to the body. A

25. 24.
What roles do the muscular and respiratory systems serve in the body when someone lifts weights?
A The muscular system allows the person to lift the weights, while the respiratory system provides oxygen to the body.
B The muscular system provides oxygen to the body, while the respiratory system allows the person to lift the weights.
C The muscular system provides nutrients to the blood, while the respiratory system provides sweat to cool the body.
D The muscular system provides sweat to cool the body, while the respiratory system provides nutrients to the blood.

26. 25.
The circulatory system transports waste through the bloodstream. Which is the best example of another system working to remove waste from the body?
A The respiratory system releases carbon dioxide.
B The skeletal system produces new red blood cells.
C The digestive system breaks down food into nutrients.
D The nervous system send signals from the brain to the muscles. a

27. 26.
Which best describes the relationship between the skeletal system and the circulatory system?
A The skeletal system transports red blood cells after the circulatory system produces them.
B The skeletal system protects red blood cells and the circulatory system pumps those cells through veins and arteries.
C The skeletal system produces red blood cells and the circulatory system transports those cells where they need to go.
D The skeletal system helps put oxygen in red blood cells and the circulatory system helps those cells rid the body of carbon dioxide. C

28. 27. Which best describes the circulatory system?
A a system made up of the brain and nerves that delivers nutrients and removes waste from the body
B a system made up of lymph and blood that delivers nutrients and removes waste from the body
C a system made up of the brain and nerves that delivers messages throughout the body
D a system made up of the heart and blood that delivers messages throughout the body B