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