Human Respiratory System Anatomy Diagram - Lungs, Trachea & Bronchi #1985450 (License: Personal Use)

This black-and-white line illustration depicts the human respiratory system in sagittal profile, including the nasal cavity, pharynx, larynx, trachea, primary bronchi, and lung lobes. The drawing emphasizes airway pathways and structural relationships without extraneous detail, making it suitable for foundational anatomy learning. It is rendered in a clean, schematic style for clarity and educational use.

Used in medical textbooks, online health articles, biology classroom materials, and patient education handouts to explain breathing mechanics and airway anatomy; matches user intent for visual learning or quick reference on respiratory physiology.