Human Body Systems Quiz
Test your knowledge about the amazing systems and functions of the human body
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Quiz Questions & Answers
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Question 1: Which organ can regenerate itself even if up to 75% of it is removed?
Heart
Kidney
Liver
Lung
Question 2: What happens to your blood pressure when you're sleeping?
It stays the same
It drops by 10-20%
It increases
It fluctuates randomly
Question 3: Which system in the body produces, stores, and releases hormones?
Nervous System
Endocrine System
Digestive System
Lymphatic System
Question 4: What is the primary function of red blood cells?
Fighting infections
Carrying oxygen
Forming blood clots
Producing antibodies
Question 5: Which part of the brain is responsible for maintaining balance and coordination?
Cerebrum
Cerebellum
Medulla
Hypothalamus
Question 6: What is the strongest muscle in the human body relative to its size?
Tongue
Jaw muscle
Heart
Gluteus Maximus
Question 7: Which sense is most closely linked to memory?
Sight
Smell
Touch
Hearing
Question 8: How often does your body replace all its skin cells?
Every year
Every month
Every 27 days
Every 6 months
Question 9: What percentage of human DNA is shared with chimpanzees?
85%
98.8%
75%
95%
Question 10: Which organ uses the most energy in your body?
Heart
Brain
Liver
Muscles