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