Science · Human body
Human Body Systems Quiz
Skeletal, muscular, digestive, circulatory, respiratory and nervous systems: what each one does.
- 🎓 Grades 4–5
- 🧪 Science
- 📐 4-LS1-1
- ❓ 20 questions
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Which organ pumps blood through your body?
- A Liver
- B Lungs
- C Stomach
- D Heart
Which body system includes your lungs?
- A Digestive
- B Skeletal
- C Respiratory
- D Muscular
Which organ is the control center of your body?
- A Heart
- B Kidney
- C Stomach
- D Brain
About how many bones does an adult human have?
- A 206
- B 106
- C 306
- D 56
What do your lungs take in when you breathe?
- A Carbon dioxide only
- B Oxygen
- C Food
- D Water
Which waste gas do your lungs breathe out?
- A Oxygen only
- B Carbon dioxide
- C Nitrogen only
- D Helium
Where does digestion begin?
- A In the mouth
- B In the heart
- C In the stomach
- D In the lungs
Which body system breaks food down into nutrients?
- A Digestive
- B Nervous
- C Circulatory
- D Skeletal
Which system includes the heart and blood vessels?
- A Circulatory
- B Digestive
- C Respiratory
- D Nervous
Which system is made of the brain, spinal cord and nerves?
- A Digestive
- B Nervous
- C Muscular
- D Skeletal
What protects your brain?
- A Ribs
- B Skull
- C Pelvis
- D Spine
What protects your heart and lungs?
- A Jaw
- B Rib cage
- C Kneecap
- D Skull
What connects muscles to bones?
- A Veins
- B Arteries
- C Tendons
- D Nerves
Where are most nutrients absorbed into the blood?
- A Large intestine
- B Small intestine
- C Esophagus
- D Mouth
Which tube carries food from your mouth to your stomach?
- A Trachea
- B Esophagus
- C Spinal cord
- D Artery
Which tube carries air to your lungs?
- A Vein
- B Trachea
- C Intestine
- D Esophagus
What is the largest organ of the human body?
- A Brain
- B Heart
- C Skin
- D Liver
What do muscles do?
- A Send messages
- B Digest food
- C Pump air
- D Move bones by pulling
Which organs filter waste from the blood?
- A Bones
- B Lungs
- C Eyes
- D Kidneys
Which blood vessels carry blood away from the heart?
- A Arteries
- B Nerves
- C Tendons
- D Veins
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