Human Body Quiz

🫀 Human Body Quiz

Your biggest organ is your skin?

How many bones you have, why blood is red, what causes hiccups. You use your body every day, yet there's a lot about it you might not know. Each answer comes with a one-line explanation.

About this quiz

How many bones you have, why blood is red, what causes hiccups. Answer your curiosity about your own body one question at a time.

It's based on what you learn in science and health classes. Each answer explains in one line what's going on inside you.

At a glance

Questions
10
Subject
Science
Price
Free
Sign-in
Optional
Devices
Phone, tablet, desktop

How to play

One job per organ
The heart pumps, the lungs take in oxygen, the kidneys filter. Remember one main job per organ and most questions fall into place.
Numbers are round figures
Figures that vary a little from person to person, like about 206 bones or about 60% water, are marked as approximate.
Review only what you missed
Under your result you'll find each question you missed, what you picked, the right answer and why.

Score ranks

  • Doctor in the Making

    All correct. You could run the next health class.

  • Biology Ace

    You know almost everything. Remember the one line for your misses.

  • Nurse's Office Regular

    You know the basics. The number questions probably tripped you.

  • Start Counting Bones

    No worries. Read the explanations and try again.

Frequently asked questions

Will this help me study medicine?
It's a fun check of basic facts. If you feel unwell, always talk to a doctor or school nurse.
Why do babies have more bones?
Some bones that start out separate fuse together as a child grows.
Do I get the same questions every time?
Each round is picked at random. Only a friend's challenge link gives you the same questions in the same order.