How well do you know your body?

There are ___ bones in the human body.

• 500

• 436

• 206

• 306

How many bones are there in the head?

• 19

• 29

• 39

• 49

Which percentage of people write with the left hand?

• 10%

• 5%

• 20

• 15%

Fingernails grow about ____ milimetres a month.

• One

• Two

• Three

• Four

Our _________ continue to grow.

• Eyes

• Noses and ears

• Mouths

• Heads

Our ____ stay the same size all our lives.

• Eyes

• Noses and ears

• Mouths

• Heads

We make skin _____.

• Now and then

• Twice a week

• All the time

• Hardly ever

We lose about ___ kilograms of skin every year.

• One

• Two

• Three

• Four

We use saliva to _____ food.

• Bite

• Protect

• Digest

• Spite

We produce ___ litre of saliva a day.

• One

• Two

• Three

• Four