Human Anatomy & Physiology Quiz
Test your knowledge of the amazing human body and its complex systems!
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Quiz Questions & Answers
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Question 1: Which organ can regenerate itself even if 75% of it is removed?
Lung
Kidney
Heart
Liver
Question 2: What is the strongest muscle in the human body relative to its size?
Quadriceps
Biceps
Gluteus Maximus
Jaw muscle
Question 3: How many times does the average human heart beat in a lifetime?
1 million times
500 million times
5 billion times
2.5 billion times
Question 4: What percentage of human DNA is shared with chimpanzees?
75.9%
92.3%
85.5%
98.8%
Question 5: Which body part continues to grow throughout a person's entire life?
Toes
Nose
Ears
Fingers
Question 6: How long does it take for the stomach to produce a new inner lining?
1 week
3-4 days
2 weeks
1 month
Question 7: What is the approximate length of all blood vessels in an adult human body if laid end to end?
100,000 miles
30,000 miles
10,000 miles
60,000 miles
Question 8: How many neurons (nerve cells) are in the average human brain?
1 billion
1 million
86 billion
10 billion