Science: Elementary School: Grades 3, 4 and 5 Quiz - The Human Body (Questions)

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When we look at how the human body works we are studying its anatomy. Everything you do each day depends on your amazing human body. We are made from cells which group together to form tissues. These tissues then make up different organs. Where would we be without our organs? Could you think without your brain, or breathe without your lungs? Organs work together in systems. Our mouths, stomachs and intestines are just some of the organs in our digestive systems. Just try eating a delicious apple without them!

1. Which of these is true?
[ ] Every part of the body is an organ, except the skeleton
[ ] Only internal body parts are organs
[ ] An organ is a body part which has a specific function (job)
[ ] An organ is another word for a sense
2. Which of these is not an organ?
[ ] Brain
[ ] Red blood cell
[ ] Stomach
[ ] Lung
3. Which parts of the body allow us to move?
[ ] Muscles
[ ] Joints
[ ] Skeleton
[ ] All of the above
4. Which of these words correctly describes the lungs?
[ ] Rigid
[ ] Spongy
[ ] Tough
[ ] Unimportant
5. Which of these organs is part of the digestive system?
[ ] Small intestine
[ ] Heart
[ ] Eyes
[ ] Kidneys
6. Which of these organs is not part of the circulatory system?
[ ] Heart
[ ] Brain
[ ] Lungs
[ ] Blood vessels
7. How many types of teeth do humans have?
[ ] One
[ ] Two
[ ] Three
[ ] Four
8. Which teeth are used for grinding food?
[ ] Molars
[ ] Incisors
[ ] Canines
[ ] All of the above
9. Approximately how many permanent teeth do humans have?
[ ] 12
[ ] 20
[ ] 26
[ ] 32
10. Which of these is not a system in the human body?
[ ] The nervous system
[ ] The immune system
[ ] The contraflow system
[ ] The reproductive system
Science: Elementary School: Grades 3, 4 and 5 Quiz - The Human Body (Answers)
1. Which of these is true?
[ ] Every part of the body is an organ, except the skeleton
[ ] Only internal body parts are organs
[x] An organ is a body part which has a specific function (job)
[ ] An organ is another word for a sense
The organs each do different jobs - the heart pumps blood around the body, the stomach starts to digest food... etc.
2. Which of these is not an organ?
[ ] Brain
[x] Red blood cell
[ ] Stomach
[ ] Lung
An organ is a collection of tissues which share the same function - a tissue is made of many cells, rather than a single cell, so a blood cell cannot be an organ
3. Which parts of the body allow us to move?
[ ] Muscles
[ ] Joints
[ ] Skeleton
[x] All of the above
You use your joints, muscles and skeleton in order to move - they wouldn't work without each other
4. Which of these words correctly describes the lungs?
[ ] Rigid
[x] Spongy
[ ] Tough
[ ] Unimportant
Lungs appear spongy because they are full of hundreds of millions of tiny air sacs called alveoli
5. Which of these organs is part of the digestive system?
[x] Small intestine
[ ] Heart
[ ] Eyes
[ ] Kidneys
The heart is part of the circulatory system
6. Which of these organs is not part of the circulatory system?
[ ] Heart
[x] Brain
[ ] Lungs
[ ] Blood vessels
The brain is the hub of the central nervous system
7. How many types of teeth do humans have?
[ ] One
[ ] Two
[x] Three
[ ] Four
Humans have molars, canines and incisors
8. Which teeth are used for grinding food?
[x] Molars
[ ] Incisors
[ ] Canines
[ ] All of the above
The incisors are for biting and cutting pieces of food - the canines are used to tear food, particularly meat
9. Approximately how many permanent teeth do humans have?
[ ] 12
[ ] 20
[ ] 26
[x] 32
Humans have about 32 permanent teeth, but only around 20 milk teeth
10. Which of these is not a system in the human body?
[ ] The nervous system
[ ] The immune system
[x] The contraflow system
[ ] The reproductive system
Contraflow systems are used to control traffic!