Human Anatomy Quiz | Grade 6 Body Systems Quiz Test
Free Grade 6 Human Anatomy Quiz! 20 questions: brain, heart, skeleton, lungs, digestive system with explanations. NGSS aligned for USA 6th graders. 70% PASS. Perfect science review!
Human Anatomy Quiz for Grade 6 Questions with Answers
Grade 6 human anatomy quiz covering body systems: brain (nervous), heart (circulatory), bones (skeletal), lungs (respiratory). 20 MCQs with detailed explanations for middle school science!
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20 Grade 6 human body systems questions aligned with NGSS standards. 70% (14/20) PASS!
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Outstanding Grade 6 science work!
You’ve mastered human body systems from circulatory to skeletal.
Perfect foundation for middle school biology — keep exploring how your body works!
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Great learning opportunity!
Human anatomy builds through body system diagrams and function review.
Study explanations carefully — you’ll ace it next time!
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#1. System removes carbon dioxide from body?
Explanation: Lungs exhale CO₂ waste from cellular respiration.
#2. Which system controls body temperature and sweat glands?
Explanation: Brain hypothalamus regulates homeostasis.
#3. Food travels from mouth to stomach through?
Explanation: Muscular tube uses peristalsis to push food down.
#4. What covers and protects your entire body from germs?
Explanation: Largest organ; blocks pathogens, regulates temperature.
#5. Which organ controls thinking, memory, and body movements?
Explanation: Brain = central nervous system control center. Interprets senses, coordinates responses.
#6. What lines inside cheeks and absorbs food?
Explanation: Protects + moistens surfaces; aids digestion.
#7. Air sacs in lungs where gas exchange happens?
Explanation: 480 million alveoli; O₂ in, CO₂ out via diffusion.
#8. Long tubes inside stomach absorb nutrients called?
Explanation: Villi increase surface area for nutrient absorption.
#9. What muscle helps you breathe by moving up/down?
Explanation: Diaphragm contracts (down) to inhale, relaxes (up) to exhale.
#10. Which body system includes bones and protects organs?
Explanation: 206 bones provide structure, protect organs like skull (brain).
#11. Which blood vessels carry oxygen‑poor blood to heart?
Explanation: Superior/inferior vena cava return deoxygenated blood.
#12. Organ filters blood and fights infection?
Explanation: Recycles old red blood cells, stores blood.
#13. Muscle attaches to bone via strong cords called?
Explanation: ~650 muscles controlled by tendons.
#14. System that fights germs and infections is?
Explanation: White blood cells attack pathogens; lymph nodes filter.
#15. What carries oxygen in blood from lungs to body cells?
Explanation: Hemoglobin in red blood cells binds oxygen (O₂).
#16. What carries messages from brain to muscles?
Explanation: ~100 billion neurons form nervous system network.
#17. What do kidneys filter from blood to make urine?
Explanation: Nephrons filter ~180 liters blood daily.
#18. Bones meet at structures called?
Explanation: Hinge (elbow), ball‑socket (hip), pivot (neck).
#19. Which organ pumps blood throughout the entire body?
Explanation: Heart beats ~100,000 times daily, circulates 2,000 gallons blood.
#20. Organ stores bile to help digest fats?
Explanation: Bile emulsifies fats for small intestine digestion.
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