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