Grade 4 medium worksheet on the major body systems. Students practice the circulatory, respiratory, digestive, skeletal, muscular, and nervous systems. Fill-in items name each system and key organ, while a matching activity pairs heart, lungs, stomach, and brain with their systems and main jobs in keeping the body alive and healthy. This Grade 4 worksheet supports classroom practice and homework.
Style:
Body Systems and Senses
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The circulatory system uses the heart to pump blood through the body.
2. The respiratory system uses the lungs to take in oxygen and release carbon dioxide.
3. The digestive system breaks food down so the body can use its nutrients.
4. The skeletal system is made of bones that support and protect the body.
5. The muscular system uses muscles that pull on bones to make the body move.
6. The nervous system uses the brain and nerves to control the whole body.
7. The heart is the main organ of the circulatory system.
8. The stomach is part of the digestive system because it helps process food.
9. Bones in the skeletal system also help make blood cells inside the marrow.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Heart
→ Circulatory system organ that pumps blood
Circulatory system organ that pumps blood
Lungs
→ Respiratory system organ that takes in air
Respiratory system organ that takes in air
Stomach
→ Digestive system organ that breaks down food
Digestive system organ that breaks down food
Brain
→ Nervous system organ that controls the body
Nervous system organ that controls the body
Body Systems and Senses
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) The circulatory system uses the heart to pump blood through the body.
2) The respiratory system uses the lungs to take in oxygen and release carbon dioxide.
3) The digestive system breaks food down so the body can use its nutrients.
4) The skeletal system is made of bones that support and protect the body.
5) The muscular system uses muscles that pull on bones to make the body move.
6) The nervous system uses the brain and nerves to control the whole body.
7) The heart is the main organ of the circulatory system.
8) The stomach is part of the digestive system because it helps process food.
9) Bones in the skeletal system also help make blood cells inside the marrow.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Heart
→ Circulatory system organ that pumps blood
Circulatory system organ that pumps blood
Lungs
→ Respiratory system organ that takes in air
Respiratory system organ that takes in air
Stomach
→ Digestive system organ that breaks down food
Digestive system organ that breaks down food
Brain
→ Nervous system organ that controls the body
Nervous system organ that controls the body
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
Auto-graded
Retry anytime
🏆
Questions Correct
0
Correct
0
Incorrect
0
Skipped
0:00
Time
0%
Score
Review Your Answers
See what you got right, missed, or skipped.