Test your knowledge on the human body

Category: Learning

Test your knowledge of the human body by answering these questions.
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1. How many body systems do humans have?
   11 (Circulatory, Digestive, Endocrine, Integumentary/Exocrine, Lymphatic/Immune, Muscular, Nervous, Renal/Urinary/Excretory, Reproductive, Respiratory and Skeletal).
2. What is the human body’s largest organ?
   The skin (8 pounds/3.6 kilograms and 22 square feet/2 square meters).
3. What is the heaviest internal organ in the human body?
   The liver (3.5 pounds / 1.6 kilograms).
4. Which is the longest bone in the human body?
   Femur.
5. Which lung is larger?
   Right.
6. What part of the body has a hammer?
   Ear.
7. Where in the body are new blood cells made?
   Bones.
8. How many teeth are there in the human body in adult life?
   32
9. What are teeth made of?
   Dentine and enamel.
10. What is the weight of heart in an average human being?
    11 ounces (300 grams).
11. How much blood is in the human body?
    1.2 to 1.5 gallons (4.5 to 5.5 liters).
12. How many times does an average heart beat in a minute?
    60 to 100 times.
13. How much blood does the heart pump?
    2000 gallons per day (7600 liters).
14. How many chambers does the human heart use to pump blood?
    4
15. Which human blood type is known as the "universal donor"?
    O – (negative)
16. How many vertebrae are there in the human body?
    33
17. Which bone is the hardest bone in the human body?
    Jaw bone.
18. Where are the majority of the body's bones located?
    Hands and feet.
19. How much time does the digestive process take?
    6 to 8 hours.
20. What is the duration of digestion in the small intestine in the human body?
    12 hours.
21. How long is an adult’s small intestine?
    22 feet (6.7 meters).
22. What is the maximum capacity for the stomach of an average human?
    3 to 4 liters.
23. What is the volume of the brain of an average human being?
    1500 cubic centimeter.
24. How many neurons are in the brain?
    86 billion.
25. How many types of muscles are there in the human body?
    3 (cardiac, skeletal, smooth).
26. How many layers does the integumentary system have?
    3 (epidermis, dermis and hypodermis).
27. What percentage of the human body is water?
    60%
28. How many taste buds are in the human tongue?
    10,000 
29. How many different functions does the liver perform?
    More than 500 vital functions.
    
30. How many times does the average human breathe in 24 hours?
    23,040
    

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