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Printable 4th grade science worksheet on the respiratory system with questions about nasal passages, cilia, bronchi, and alveoli.
Worksheet

Human Anatomy and Physiology: Respiratory System

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This printable science worksheet for 4th grade covers the human respiratory system with eight multiple-choice and short-answer questions. Students answer questions about nasal passages, mucus and cilia, the larynx, bronchi, alveoli, and the role of the diaphragm. Includes a prompt about the dangers of smoking. Suitable for homeschool health science, anatomy review, or science class.

Subject:
Science
Topic:
Anatomy
Grade Level:
4th Grade
Updated January 2026

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