Human Body Quiz

1. What is the largest organ in the human body?

1. Brain
2. Heart
3. Liver
4. Skin

2. How many chambers does the human heart have?

1. 2
2. 3
3. 4
4. 5

3. What is the longest bone in the human body?

1. Femur
2. Humerus
3. Spine
4. Tibia

4. Which blood type is known as the universal donor?

1. Type A
2. Type AB
3. Type B
4. Type O negative

5. How many pairs of chromosomes do humans have?

1. 21
2. 22
3. 23
4. 24

6. Which organ produces insulin?

1. Kidney
2. Liver
3. Pancreas
4. Stomach

7. How much blood does the average adult human body contain?

1. 2–3 liters
2. 4–5 liters
3. 6–7 liters
4. 8–9 liters

8. What is the smallest bone in the human body?

1. Incus
2. Malleus
3. Pisiform
4. Stapes

9. Which part of the brain controls balance and coordination?

1. Brainstem
2. Cerebellum
3. Cerebrum
4. Hypothalamus

10. How many muscles are in the human body?

1. Around 300
2. Around 400
3. Around 600
4. Around 800

11. What is the medical term for the kneecap?

1. Fibula
2. Patella
3. Tibia
4. Ulna

12. Which vitamin does the skin produce when exposed to sunlight?

1. Vitamin A
2. Vitamin C
3. Vitamin D
4. Vitamin K

13. How long does it take for food to travel through the entire digestive system?

1. 12–24 hours
2. 24–72 hours
3. 3–5 days
4. 6–8 hours

14. What is the most abundant protein in the human body?

1. Collagen
2. Elastin
3. Hemoglobin
4. Keratin

15. How many taste buds does the average human tongue have?

1. 1,000–2,000
2. 15,000–20,000
3. 25,000–30,000
4. 5,000–10,000

16. Which organ filters blood and produces bile?

1. Kidney
2. Liver
3. Pancreas
4. Spleen

17. What type of blood cell fights infection?

1. Plasma cells
2. Platelets
3. Red blood cells
4. White blood cells

18. How many lobes does the right lung have?

1. 1
2. 2
3. 3
4. 4

19. What is the average normal body temperature?

1. 36.0°C
2. 37.0°C
3. 38.0°C
4. 39.0°C

20. What is the powerhouse of the cell?

1. Golgi apparatus
2. Mitochondria
3. Nucleus
4. Ribosome