The Amazing Human Body Quiz
Test your knowledge about the fascinating systems and functions of the human body
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Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
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 body when you blush?
Muscles contract
Blood vessels dilate
Skin cells multiply
Hormones decrease
Question 3: Which system in the body produces, stores, and releases hormones?
Nervous system
Digestive system
Endocrine system
Lymphatic system
Question 4: What is the primary function of red blood cells?
Fight infections
Transport oxygen
Produce antibodies
Form blood clots
Question 5: Which part of the brain is responsible for balance and coordination?
Cerebellum
Frontal lobe
Temporal lobe
Hippocampus
Question 6: What happens to your pupils when you're attracted to someone?
They shrink
They dilate
They change color
Nothing changes
Question 7: How often does your body replace all its skin cells?
Every year
Every month
Every 27 days
Every 6 months
Question 8: What is the strongest muscle in the human body relative to its size?
Tongue
Jaw muscle
Heart
Gluteus Maximus
Question 9: What percentage of your body's energy does your brain use?
5%
20%
10%
15%
Question 10: What's the approximate length of all blood vessels in an adult human body if laid end to end?
1,000 miles
60,000 miles
10,000 miles
100,000 miles