The Human Body Quiz – Organs, Bones and Body Systems (Grades 5–7)
Test what your class knows about the human body: organs, the skeleton, muscles, blood, the heart, lungs, kidneys and digestion. 12 science questions for grades 5–7 with short explanations.
- Grades 5–7
- 12 questions
- About 6 min
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Questions
Correct answers aren't marked here, so you can use this page as a test. You'll see them in your account after you use the quiz.
- 1Single choice
Which organ pumps blood around the body?
- Lungs
- Heart
- Liver
- Brain
- 2Single choice
How many bones does an adult human skeleton usually have?
- 186
- 306
- 206
- 106
- 3Single choice
What is the largest organ of the human body?
- Liver
- Skin
- Brain
- Lungs
- 4Single choice
In which organs does gas exchange happen – oxygen enters the blood and carbon dioxide leaves it?
- Lungs
- Stomach
- Kidneys
- Heart
- 5Single choice
Which blood cells carry oxygen around the body?
- White blood cells
- Platelets
- Red blood cells
- Nerve cells
- 6True / False
The femur (thigh bone) is the longest bone in the human body.
- True
- False
- 7Single choice
What is the main job of the kidneys?
- To digest food
- To pump blood
- To filter the blood and make urine
- To send messages to the muscles
- 8Multiple choiceMore than one correct answer
Which of these are part of the digestive system? Select all that apply.
- Stomach
- Small intestine
- Lungs
- Esophagus
- Kidneys
- 9Type answer
Which organ, protected by the skull, controls the whole body?
Written answer:
- 10Single choice
Where in the digestive system are most nutrients absorbed into the blood?
- Stomach
- Large intestine
- Esophagus
- Small intestine
- 11True / False
Muscles can both push and pull on bones.
- True
- False
- 12Single choice
Which body system fights germs and helps protect you from disease?
- Immune system
- Skeletal system
- Digestive system
- Respiratory system