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