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