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