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