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SCIENCE TRIVIA

on the Human Body
 
Spark discussion and debate before revealing the answers.
How well do you know the human body?

 

Science Trivia on the Human Body

Human Body Trivia
 
This trivia has been setup for use in your classroom ... can your students get them all?
 
1) True or false - there are 206 bones in an adult human body and 300 bones in an infants body?
 
True. Some bones in infants skulls have not yet fused together.

2) True or false- most of the dust in your home is made of human skin?
 
True - up to 70%!

3) Can you lick your elbow?
  
No. Now be honest, did you try?

4) If you go into space, do you get taller?
  
Yes, the cartilage disks in your spine expand under zero gravity.

5) What is the hardest substance in the human body?
  
Tooth enamel.

6) What is trepanning?
  
An ancient form of medicine which involved making holes in human skull to relieve   pressure; don't try at home!

7) In terms of attributed human deaths which are more dangerous; snakes, bees, sharks or house flies?
  
House flies. They are vectors for disease causing bacteria.

8) True or false; your body's temperature rises slightly during digestion?
  
True

9) Where are the three smallest bones in the human body? What are they called?
  
In the middle ear. Collectively called ossicles, the 3 bones are the Malleus (hammer), Incus (anvil) & Stapes (stirrup).

10) What's the lifespan of a human red blood cell?
  
Around 120 days.

11) True or false; A modern human's brain is smaller than a Neanderthal's brain?
  
True.

12) What is the longest type of cell in the body?
  
The nerve cell (neuron).

13) What does bile do in you body?
  
Emulsify fats in the small intestine

14) What is a Pyrogen?
 
 A substance that causes fever.

15) Where would you find your pinna?
  
It's your outer ear (the bit you see made out of cartilage)

16) Who has more hair follicles, blondes or brunettes?
  
Blondes.

17) Which is the rarest blood type in humans?
  
AB negative. <1% of the population

18) Why does eyesight change as you get older?
  
The eye's lens continues to grow throughout life, becoming thicker and less transparent.

19) True or false; nitroglycerine can be used to treat heart attacks?
  
True. It dilates blood vessels.

20) Do you have the same number of neck vertebrae as giraffe's?
  
Yes.

21) How much salt does the average human body contain?
 
Around 250 grams.

22)If I kept walking in a straight line on a flat surface with no visible features, is it possible to walk in circles eventually?
  
People often favor one leg over the other. It is possible that over time the discrepancy between the two leg strides may indeed cause you to walk in circles.
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