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