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