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