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