Human Body Quiz: 40 Questions From Easy to Insane

Human Body Quiz: 40 Questions From Easy to Insane: questions and answers

Try to answer first, then tap a question to see the answer.

1. What could you survive the LONGEST without? Air · Water · Food

   Food – You last minutes without air and days without water, but weeks without food!

2. Which organ do you think with? Heart · Brain · Lungs

   Brain

3. How many lungs do you have? One · Two · Three

   Two – Your left lung is smaller to make room for your heart!

4. Which sense uses your tongue? Taste · Smell · Hearing

   Taste

5. What protects your brain? Ribs · Spine · Skull

   Skull

6. The bendy joint in the middle of your arm is your... Knee · Elbow · Wrist

   Elbow

7. Where are your vocal cords? In your throat · Up in your nose · Deep in your chest

   In your throat

8. Which metal in your blood helps make it red? Iron · Copper · Gold

   Iron

9. How many fingers and toes do most people have in total? 10 · 20 · 24

   20

10. What do the hairs in your nose do? Keep you warm · Filter dust · Help you smell

    Filter dust

11. Which grow faster? Fingernails · Toenails · Both the same

    Fingernails

12. Goosebumps happen when tiny muscles... Make your skin sweat · Pull your hairs up · Shrink your skin

    Pull your hairs up

13. Which is the biggest muscle in your body? Butt muscle · Biceps · Calf

    Butt muscle – Its big job is keeping you upright!

14. Where is the thinnest skin on your body? Lips · Eyelids · Fingertips

    Eyelids

15. Your 'funny bone' is really a... Bone · Nerve · Muscle

    Nerve – Hit it and the nerve sends that zing to your fingers!

16. Babies are born without hard, bony... Kneecaps · Teeth · Hair

    Kneecaps

17. How much of your brain do you use? Only 10% · About half of it · Nearly all of it

    Nearly all of it – The 10% idea is a total myth!

18. Usually, how long can a person survive without water? About 3 hours · About 3 days · About 3 weeks

    About 3 days

19. Where are your body's smallest muscles? In your ear · In your toes · In your eyelids

    In your ear

20. What is earwax for? Nothing useful · Protecting your ears · Helping you hear better

    Protecting your ears

21. About how many breaths do you take each day? 20,000 · 2,000 · 200,000

    20,000

22. Which of these organs can you live without? Heart · Spleen · Brain

    Spleen

23. Carrots help your body make which vitamin? Vitamin A · Vitamin C · Vitamin D

    Vitamin A

24. All your blood vessels laid end to end would stretch about... 1,000 km · 100,000 km · 10 million km

    100,000 km – That's more than twice around the Earth!

25. Your body has about as many gut bacteria as... Human cells · Sand grains on a beach · Hairs on your head

    Human cells

26. Which is the only bone not connected to another bone? Hyoid · Kneecap · Tailbone

    Hyoid

27. Which part of your brain controls balance? Brain stem · Cerebellum · Frontal lobe

    Cerebellum

28. The tiny air sacs in your lungs are called... Villi · Alveoli · Nephrons

    Alveoli

29. Spread flat, your lungs' inner surface would cover about... A whole football field · A kitchen table · A small apartment

    A small apartment

30. What causes hiccups? Your diaphragm twitching · Eating too fast, always · Your heart skipping a beat

    Your diaphragm twitching

31. Fastest nerve signals travel at about... 4 km/h · 430 km/h · 43,000 km/h

    430 km/h

32. Which part of your body is called your 'second brain'? Your gut · Your heart · Your spine

    Your gut – It has about 500 million nerve cells!

33. Which eye cells let you see color? Rods · Cones · Lens cells

    Cones

34. Which body part has the most sweat glands per area? Soles of your feet · Back · Forehead

    Soles of your feet

35. Where are the muscles that bend your fingers? Inside the fingers · In the forearm and palm · In the shoulder

    In the forearm and palm

36. The buzz you feel when your phone isn't ringing is called... Phantom vibration · Ghost ringing syndrome · Echo buzz

    Phantom vibration

37. Do humans glow very faintly in the dark? Yes · No · Only children

    Yes – It's about 1,000 times too weak for our eyes to see!

38. About how many skin cells do you shed every minute? 300 · 30,000 · 3 million

    30,000

39. Which organ floats in water? Lungs · Liver · Heart

    Lungs

40. The name for the fear of long words is... Over 30 letters long · Just 5 letters · Not a real word at all

    Over 30 letters long – Hippopotomonstrosesquippedaliophobia. Yes, really!

41. Which organ has its own built-in pacemaker cells? Lungs · Heart · Stomach

    Heart

42. Which body part keeps working while you sleep but can't feel pain itself? Brain · Skin · Heart

    Brain