Medically Reviewed by Sabrina Felson, MD on December 01, 2022
Question 1/11

Which nails grows faster?

  • Fingernails
  • Toenails
Question 2/11

How fast is a sneeze?

  • 1 mile per hour
  • 10 miles per hour
  • 60 miles per hour
  • 100 miles per hour
Question 3/11

What does your spine do?

  • Lets you stand up
  • Lets you bend and twist
  • Protects your spinal cord
  • All of the above
Question 4/11

About how many taste buds are on your tongue?

  • 10
  • 100
  • 10,000
  • 10 million
Question 5/11

How much does your hair grow in one year?

  • 2 inches
  • 4 inches
  • 6 inches
  • 8 inches
Question 6/11

How do your eyes change as you get older? 

  • Your pupils get larger
  • Your pupils get smaller
  • Your whites get whiter
  • Your whites get grayer
Question 7/11

How tiny is your smallest bone?

  • Size of safety pin
  • Size of a grain of rice
  • Size of a grain of sand
Question 8/11

Where is your smallest muscle?

  • Eyes
  • Ears
  • Fingers
  • Heart
Question 9/11

How much of our bodies are water?

  • 50%
  • 60%
  • 75%
  • 80%
Question 10/11

What's your largest organ?

  • Brain
  • Stomach
  • Spine
  • Skin
Question 11/11

How many miles of blood vessels are in your body?

  • 10
  • 100
  • 1,000
  • 100,000