1. Your body creates 25 million new cells in how much time? Every minute Every day Every hour Every second

2. Our skin surface is completely replaced four times a year. True False

3. Three million of your red blood cells died as you read this sentence. True False

4. Humans have fewer muscles than a caterpillar. True False

5. Approximately how often does an average person's heart beat in a day? 1,000,000 times 10,000 times 100,000 times 1,000 times

6. Brad Byers, the "Human Toolbox" holds the world record for sword swallowing (among other strange world records). How many 70cm long swords can he swallow at one time? 2 5 10 20

7. About how much blood do your kidneys process in an average day? 800 litres 30 litres 180 litres 300 litres

8. How much of human feces is made up of intestinal bacteria? 10%-15% 30-50% none 90%

9. Which body part(s) contain(s) one quarter of your bones? Pelvis Skull Hands Ear

10. About how fast do nerve impulses move? 13m/sec 13000m/sec 1300m/sec 130m/sec