Human Respiratory and Circulatory System Diagram - Lungs & Heart Anatomy #3880394 (License: Personal Use)

This medical illustration depicts the human thoracic cavity, featuring the left and right lungs with branching bronchial trees, the central heart with visible chambers and coronary vessels, and the trachea extending upward to the larynx. Arteries are shown in blue (oxygenated) and veins in red (deoxygenated), emphasizing pulmonary circulation. The image uses a semi-transparent view to reveal internal structures without obscuring spatial relationships.

Used in educational websites, anatomy courses, health blogs, and patient information portals to explain how the respiratory and circulatory systems interact during gas exchange. Matches user intent for learning basic cardiopulmonary anatomy or preparing teaching materials.