Human Respiratory System Anatomy Diagram | Educational Medical Illustration #3301111 (License: Personal Use)

This medical illustration depicts the upper and lower respiratory tract in a sagittal cross-section of the human torso, including the nasal cavity, pharynx, larynx, trachea with cartilaginous rings, primary bronchi, and detailed lung lobes with bronchial tree branching. The diaphragm is shown at the base, emphasizing its role in inhalation and exhalation mechanics. The clean line art and subtle shading enhance clarity for educational use.

Used on health education websites, anatomy learning platforms, and medical textbooks to explain breathing physiology; targets students, teachers, and patients seeking visual understanding of respiration.