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