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Printable 3rd grade science worksheet with questions about the purpose of the heart, lungs, muscles, intestines, and skeleton.
Worksheet

The Inner Body: Written Response

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This printable science worksheet for 3rd graders contains six short-answer questions on basic body systems and their functions. Students write 1–3 sentences explaining the purpose of the heart, lungs, muscles, intestines, and skeleton, plus how nutrients enter the body. Works well for science review, homework, or assessing understanding of human anatomy at the elementary level.

Subject:
Science
Topic:
Anatomy
Grade Level:
3rd Grade
Updated February 2026

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Print this worksheet for classwork, homework, or independent practice. Click 'View Worksheet' to edit questions, adjust formatting, or add your own content before downloading.

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