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