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 of these is part of the circulatory system? (a) rib (b) windpipe (c) blood vessel (d) small intestine
- 2.💨 Which gas does our body need from the air we breathe in? (a) oxygen (b) steam (c) smoke (d) carbon dioxide
- 3.🦴 How many bones are there in a grown-up’s body?
- 4.👄 Where does digestion begin? (a) in the mouth (b) in the heart (c) in the lungs (d) in the stomach
- 5.What is a job of the skin? (a) cleaning the blood (b) churning food (c) covering the body (d) taking in oxygen
- 6.❤️ How many chambers (rooms) does the human heart have?
- 7.🩺 Which body part has this job: pumping blood? (a) heart (b) kidneys (c) lungs (d) muscles
- 8.🧍 Which is the largest organ of the human body? (a) brain (b) kidney (c) skin (d) heart
- 9.True or false: the windpipe is part of the digestive system. (a) True (b) False
- 10.🫘 How many kidneys do we have?
- 11.🩺 Which body part has this job: thinking and learning? (a) skin (b) ribs (c) muscles (d) brain
- 12.🫀 The brain is part of which body system? (a) digestive system (b) respiratory system (c) nervous system (d) skeletal system
- 13.🔍 Which is the odd one out? (a) nerve (b) spinal cord (c) large intestine (d) brain
- 14.🫀 The nerve is part of which body system? (a) nervous system (b) respiratory system (c) circulatory system (d) skeletal system
- 15.🩺 Which body part has this job: churning food? (a) skin (b) kidneys (c) stomach (d) muscles
- 16.👂 The smallest bone of the body is in the ___. (a) toe (b) finger (c) ear (d) nose
- 17.True or false: thinking and learning is a job of the brain. (a) False (b) True
- 18.🩺 Which body part has this job: taking in oxygen? (a) lungs (b) brain (c) heart (d) ribs
- 19.What is a job of the ribs? (a) guarding heart and lungs (b) thinking and learning (c) protecting the brain (d) churning food
- 20.Which of these is part of the skeletal system? (a) stomach (b) thigh bone (c) blood (d) nerve
- 21.True or false: covering the body is a job of the heart. (a) False (b) True
- 22.🔍 Which is the odd one out? (a) rib (b) nerve (c) brain (d) spinal cord
- 23.🩺 Which body part has this job: guarding heart and lungs? (a) kidneys (b) skull (c) brain (d) ribs
- 24.True or false: pulling bones to move is a job of the skin. (a) False (b) True
- 25.🔍 Which is the odd one out? (a) skull (b) backbone (c) thigh bone (d) brain
- 26.True or false: pumping blood is a job of the heart. (a) False (b) True
- 27.🫀 The thigh bone is part of which body system? (a) digestive system (b) respiratory system (c) circulatory system (d) skeletal system
- 28.True or false: the skull is part of the skeletal system. (a) True (b) False
- 29.True or false: the blood vessel is part of the circulatory system. (a) True (b) False
- 30.True or false: protecting the brain is a job of the skull. (a) True (b) False
- 31.True or false: thinking and learning is a job of the muscles. (a) True (b) False
- 32.True or false: pumping blood is a job of the ribs. (a) True (b) False
- 33.🩺 Which body part has this job: protecting the brain? (a) lungs (b) muscles (c) skull (d) heart
- 34.True or false: pulling bones to move is a job of the stomach. (a) True (b) False
- 35.Which of these is part of the digestive system? (a) lung (b) stomach (c) backbone (d) rib
- 36.True or false: the brain is part of the nervous system. (a) True (b) False
- 37.🔍 Which is the odd one out? (a) brain (b) nerve (c) lung (d) spinal cord
- 38.Which of these is part of the respiratory system? (a) lung (b) rib (c) small intestine (d) blood
- 39.🔍 Which is the odd one out? (a) backbone (b) blood (c) skull (d) rib
- 40.True or false: the blood is part of the circulatory system. (a) True (b) False
Answer key
- blood vessel
- oxygen
- 206
- in the mouth
- covering the body
- 4
- heart
- skin
- False
- 2
- brain
- nervous system
- large intestine
- nervous system
- stomach
- ear
- True
- lungs
- guarding heart and lungs
- thigh bone
- False
- rib
- ribs
- False
- brain
- True
- skeletal system
- True
- True
- True
- False
- False
- skull
- False
- stomach
- True
- lung
- lung
- blood
- True
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