human body


  • The human body is made up of a head, neck, torso, two arms and two legs. The average height of an adult human is about 5 to 6 feet tall. The human body is made to stand erect, walk on two feet, use the arms to carry and lift, and has opposable thumbs (able to grasp).
  • The adult body is made up of: 100 trillion cells, 206 bones,
    600 muscles, and 22 internal organs (including  5 vital organ BRAIN,HEART, LUNG,LIVER & KIDNEY)
  • There are many systems in the human body:
    • Circulatory System (heart, blood, vessels)
    • Respiratory System (nose, trachea, lungs)
    • Immune System (many types of protein, cells, organs, tissues)
    • Skeletal System (bones)
    • Excretory System (lungs, large intestine, kidneys)
    • Urinary System (bladder, kidneys)
    • Muscular System (muscles)
    • Endocrine System (glands)
    • Digestive System (mouth, esophogus, stomach, intestines)
    • Nervous System (brain, spinal cord, nerves)
    • Reproductive System (male and female reproductive organs)
  • Every square inch of the human body has about 19 million skin cells.
  • Every hour about 1 billion cells in the human body must be replaced.
  • The average human head has about 100,000 hairs.
  • The circulatory system of arteries, veins, and capillaries is about 60,000 miles long.
  • The heart beats more than 2.5 billion times in an average lifetime.
  • There are about 9,000 taste buds on the surface of the tongue, in the throat, and on the roof of the mouth.
  • The strongest muscle in the body is the tongue.
  • The human heart creates enough pressure when it pumps out to the body to squirt blood 30 feet.
  • You blink over 10,000,000 times a year.
  • The human brain weighs about 3 pounds.
  • It takes about 20 seconds for a red blood cell to circle the whole body.
  • Only 10% of the population are left handed.
  • One fourth of the bones in your body are in your feet.
  • Children tend to grow faster in the spring.
  • The most sensitive finger on the human hand is the index finger.
  • More men are color-blind than women.
  • More people have brown eyes than any other color


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