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Interesting Facts• The human skull contains 22 bones.
• Your brain is more active and thinks more at night than during the day.
• The brain stops growing at age 15, but learning never stops.
• The spinal cord and nerves— known as the nervous system—let messages flow
backand forth between the brain and the body.
• We actually “see” with our brains; the eye is basically a camera.
• The strongest muscle in the body is the tongue.
• The average person has 32 teeth.
• Our eyes are always the same size from birth, but our nose and ears never
stopgrowing.
• Your thumb is the same length as your nose.