A diagram illustrates the human respiratory system, presenting a sagittal view of a male's upper torso and head

A diagram illustrates the human respiratory system, presenting a sagittal view of a male's upper torso and head. The individual is depicted in profile, facing left, with fair skin and yellow hair. Key anatomical structures are colored: dark red for the nasal passage, oral cavity, and pharynx; a light brown for the trachea; and pink for the lungs and heart. The left lung displays intricate internal branching of bronchi, while the right lung shows external ribcage indications. Various anatomical parts are labeled with black text, including 'Nasal passage', 'Oral cavity', 'Pharynx', 'Larynx', 'Trachea', 'Bronchi', 'Lung', 'Heart', and 'Ribs'. The diagram is presented against a plain white background, framed by a dashed red line. The visual content of this anatomical illustration does not depict any specific geographic location within the city of Agani, Nigeria, or any other real-world setting.