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How well do you know your own body? Take our quiz

How well do you know your own body? What body part is the strongest? You don’t need to be a fitness freak to answer this, but it could help. We prepared this human body quiz and to our surprise, many people failed in the ‘easy’ questions. Question No. 8 proved to be rather tough. How familiar are you to your own body? The average score is 9/15.


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  • Question of

    What eye colour in humans is more associated with a higher sensitivity to pain?

    • Green
    • Brown
    • Grey
    • Blue
    • All are the same
  • Question of

    Compared with toenails, fingernails grow:

    • Faster
    • Slower
    • At the same speed
  • Question of

    There are about 14 billion brain cells in the human body at birth. After 25 years, that number:

    • Increases.
    • Decreases.
    • Stays the same.
  • Question of

    How many colour hues can the human eye discriminate?

    • 1 million
    • 700 thousand
    • 10 million
    • 500 thousand
  • Question of

    It has been demonstrated that children grow faster in what season?

    • Spring
    • Summer
    • Fall
    • Winter
  • Question of

    How many different bones make up a human skull?

    • 23
    • 29
    • 32
    • 26
  • Question of

    80% of human body’s heat is lost through what part?

    • The torso
    • The arms
    • The head
    • The legs
  • Question of

    What’s the human body part that cannot heal itself?

    • The ears
    • The tongue
    • The teeth
    • The eyes
  • Question of

    The fear of being alone is called what?

    • Pogonophobia
    • Autophobia
    • Algophobia
    • Haphephobia
  • Question of

    How many chemical reactions do occur in the human brain each second?

    • 600,000
    • 66,000
    • 100,000
    • 30,000
  • Question of

    The strongest muscle in the human body is located where?

    • The jaws
    • The quadriceps
    • The hand
    • The tongue
    • The arm
  • Question of

    What does lack of sleep actually cause in your immune system?

    • Stimulates it.
    • Impairs it.
    • It has no impact.
  • Question of

    White blood cells account for what proportion of total blood cells in an adult’s body?

    • 15 percent
    • 5 percent
    • 1 percent
    • 10 percent
  • Question of

    Psychiatrists give the name of anginophobia to the fear of what?

    • Pain
    • Heights
    • Thunder and lightning
    • Choking
  • Question of

    In the US population, what proportion of patients that suffer from autoimmune diseases are women?

    • 78 percent
    • 48 percent
    • 22 percent
    • It’s the same proportion.

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Written by Ricardo Gondelles

Thirty years of experience in journalism and the publishing world is easily said. Yet, I feel so open to learning that I like to imagine what comes for the next 30 years. As a writer, editor and proofreader, my passion for the written word keep me discovering new realms. Bilingual (Spanish-English), I’m a language lover who’s going through French and Italian as well (I don’t know what comes next, Russian?). My goal in life is to have things done as best as I can, and I take pride in it. Contact me.

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