Quiz template · Education

Human body quiz

Twelve questions about bones, organs, blood and teeth, with a short explanation for every answer.

Easy
12 questions
30 s each · about 9 min
Checked against 12 sources

A science round about the body we all carry around. It starts with bones and organs, then moves to blood, teeth and the vitamin your skin makes in sunlight. The questions are easy enough for a mixed room, and the explanations give every answer a fact worth remembering.

How to run it

Use it to start or finish a science lesson on the body: the results show what the class already knows.
After each answer, ask students to point to that bone or organ on their own body.
Read the explanation after each question; the surprising ones start good conversations.

Questions and answers

1About how many bones does a grown adult have?
- A186
- B196
- C206
- D216
Reveal answer
C. 206
Babies have around 270 bones. Some fuse as we grow, leaving around 206 in adults.
2What is the largest organ of the human body?
- AThe liver
- BThe skin
- CThe brain
- DThe lungs
Reveal answer
B. The skin
The skin is the largest organ, at roughly 16 percent of body mass.
3Where is the smallest bone in the human body?
- AIn the middle ear
- BIn the little toe
- CIn the nose
- DIn the wrist
Reveal answer
A. In the middle ear
The stapes, in the middle ear, is the smallest and lightest bone in the body.
4Which is the longest bone in the human body?
- AThe shin bone
- BThe upper arm bone
- CThe collarbone
- DThe thigh bone
Reveal answer
D. The thigh bone
The femur, or thigh bone, is the longest bone in the human body.
5What is the hardest substance in the human body?
- ABone
- BTooth enamel
- CFingernail
- DCartilage
Reveal answer
B. Tooth enamel
Enamel, the outer layer of our teeth, is the hardest substance in the human body.
6How many chambers does the human heart have?
- ATwo
- BThree
- CFour
- DSix
Reveal answer
C. Four
Two upper chambers, the atria, and two lower chambers, the ventricles.
7Which is the largest part of the human brain?
- AThe cerebrum
- BThe cerebellum
- CThe brainstem
- DThe hypothalamus
Reveal answer
A. The cerebrum
The cerebrum is the largest and most developed of the major divisions of the brain.