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