Class 3 GK Worksheet: Human Body Systems
Remember (Which team?): Digestive: food pipe, stomach, intestines, liver. Respiratory: windpipe, lungs. Circulatory: heart, blood vessels, blood. Nervous: brain, spinal cord, nerves. Skeletal: skull, ribs, backbone. Jobs: heart – pumps blood, lungs – take in oxygen, kidneys – clean the blood, skull – protects the brain, ribs – guard heart and lungs. Numbers: 206 bones, 4 chambers in the heart, 2 lungs, 2 kidneys, 32 grown-up teeth.
NameDateTime takenScore ___ / 40
- 1.💨 Which gas does our body need from the air we breathe in? (a) carbon dioxide (b) oxygen (c) smoke (d) steam
- 2.What is a job of the kidneys? (a) pulling bones to move (b) thinking and learning (c) cleaning the blood (d) taking in oxygen
- 3.True or false: the large intestine is part of the nervous system. (a) False (b) True
- 4.🧍 Which is the largest organ of the human body? (a) kidney (b) heart (c) skin (d) brain
- 5.What is a job of the stomach? (a) churning food (b) taking in oxygen (c) covering the body (d) guarding heart and lungs
- 6.🫀 The skull is part of which body system? (a) nervous system (b) circulatory system (c) digestive system (d) skeletal system
- 7.🔍 Which is the odd one out? (a) blood (b) heart (c) lung (d) blood vessel
- 8.True or false: thinking and learning is a job of the lungs. (a) False (b) True
- 9.Which of these is part of the skeletal system? (a) backbone (b) spinal cord (c) windpipe (d) stomach
- 10.Which of these is part of the respiratory system? (a) heart (b) windpipe (c) food pipe (d) thigh bone
- 11.🫀 The large intestine is part of which body system? (a) circulatory system (b) skeletal system (c) digestive system (d) nervous system
- 12.🫀 The heart is part of which body system? (a) circulatory system (b) nervous system (c) respiratory system (d) digestive system
- 13.What is a job of the brain? (a) thinking and learning (b) pumping blood (c) covering the body (d) cleaning the blood
- 14.🩺 Which body part has this job: pumping blood? (a) skull (b) ribs (c) heart (d) stomach
- 15.True or false: guarding heart and lungs is a job of the brain. (a) False (b) True
- 16.True or false: the nerve is part of the nervous system. (a) True (b) False
- 17.🔍 Which is the odd one out? (a) stomach (b) small intestine (c) windpipe (d) food pipe
- 18.🦴 How many bones are there in a grown-up’s body?
- 19.🦵 The longest bone of the body is in the ___. (a) thigh (b) finger (c) neck (d) arm
- 20.🩺 Which body part has this job: thinking and learning? (a) lungs (b) skin (c) brain (d) skull
- 21.👂 The smallest bone of the body is in the ___. (a) toe (b) ear (c) finger (d) nose
- 22.👄 Where does digestion begin? (a) in the mouth (b) in the stomach (c) in the lungs (d) in the heart
- 23.True or false: the windpipe is part of the respiratory system. (a) False (b) True
- 24.🔍 Which is the odd one out? (a) skull (b) backbone (c) thigh bone (d) stomach
- 25.What is a job of the ribs? (a) churning food (b) covering the body (c) pumping blood (d) guarding heart and lungs
- 26.🩺 Which body part has this job: cleaning the blood? (a) ribs (b) skin (c) kidneys (d) skull
- 27.🩺 Which body part has this job: covering the body? (a) brain (b) heart (c) kidneys (d) skin
- 28.True or false: the nerve is part of the skeletal system. (a) True (b) False
- 29.What is a job of the muscles? (a) taking in oxygen (b) cleaning the blood (c) covering the body (d) pulling bones to move
- 30.What is a job of the skull? (a) covering the body (b) guarding heart and lungs (c) cleaning the blood (d) protecting the brain
- 31.True or false: the blood is part of the skeletal system. (a) True (b) False
- 32.True or false: the stomach is part of the respiratory system. (a) False (b) True
- 33.🫀 The blood vessel is part of which body system? (a) skeletal system (b) circulatory system (c) digestive system (d) nervous system
- 34.🩺 Which body part has this job: pulling bones to move? (a) kidneys (b) ribs (c) stomach (d) muscles
- 35.True or false: thinking and learning is a job of the skin. (a) True (b) False
- 36.🫀 The blood is part of which body system? (a) nervous system (b) circulatory system (c) respiratory system (d) skeletal system
- 37.🩺 Which body part has this job: churning food? (a) ribs (b) skull (c) muscles (d) stomach
- 38.❤️ How many chambers (rooms) does the human heart have?
- 39.🦷 How many milk teeth does a child have?
- 40.True or false: the liver is part of the respiratory system. (a) False (b) True
Answer key
- oxygen
- cleaning the blood
- False
- skin
- churning food
- skeletal system
- lung
- False
- backbone
- windpipe
- digestive system
- circulatory system
- thinking and learning
- heart
- False
- True
- windpipe
- 206
- thigh
- brain
- ear
- in the mouth
- True
- stomach
- guarding heart and lungs
- kidneys
- skin
- False
- pulling bones to move
- protecting the brain
- False
- False
- circulatory system
- muscles
- False
- circulatory system
- stomach
- 4
- 20
- False
Free gk lessons, practice and worksheets at talentjr.in/gk-worksheets