Human Respiratory System Diagram - Lungs Anatomy with Labels #3301122 (License: Personal Use)

This diagram illustrates the bilateral structure of the human lungs, highlighting the right lung’s three lobes (upper, middle, lower) and the left lung’s two lobes (upper, lower), along with the trachea bifurcating into main and lobar bronchi. The heart space is indicated beneath the lungs, emphasizing thoracic spatial relationships. Vascular branching patterns are shown in red to represent pulmonary circulation pathways.

Used in biology, anatomy, and health education resources-especially in K-12 and introductory college courses-to teach respiratory system structure; matches user intent for visual learning, study aids, or classroom handouts.