Download anatomical drawings of upper and lower human respiratory tract, diagrams of breathing mechanism and pulmonary function, lung diseases, conditions, problems caused by smoking. Also includes sinuses, larynx (voice box) anatomy and disorders.

Please note: Free downloads are intended to facilitate healthcare education for people in need in low income countries and can be used for educational purposes only. If you can afford it or if you plan to use the images for commercial purposes, please consider buying instead. You can find a larger image collection at higher resolutions for sale at affordable prices on Alila Medical Media website.

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Anatomy of Asthma, labeled.

Pathology of asthma, chronic inflammatory disease of the airways, and asthmatic attack, labeled diagram.

Mechanism of allergy (drug,hay fever, asthma...)

Anaphylactic reaction mechanism: antigen bridges the gap between two antibody molecules on mast cell or basophil, triggering massive release of histamine and other mediators.

Common respiratory diseases, labeled diagram.

Alveoli changes in lung diseases: pneumonia and emphysema.

Common respiratory diseases, unlabeled diagram.

Alveoli changes in lung diseases: pneumonia and emphysema.

Smoker's lung (with cancer) versus healthy lung

Smoker's lung with tumor and tar deposit versus healthy lung, medical illustration.

Anatomy of Asthma, labeled.

Pathology of asthma, chronic inflammatory disease of the airways, and asthmatic attack, unlabeled diagram.

Healthcare icon (lung), medical drawing.

Magnifying glass on lung picture, lungs check-up icon.

Sinusitis, labeled diagram.

Anatomy of sinuses of the head, anterior and lateral view, showing inflammation of sinuses.

Deep vein thrombosis diagram

Abnormal blood clotting in deep leg vein and formation of thrombus.

Smoking and Emphysema, labeled diagram.

Smoking tobacco damages and destroys lung alveoli, causing emphysema.

Human lungs isolated on white, drawing.

Human lungs anatomy diagram, unlabeled..

TB bacteria infection, labeled diagram.

Progression of pulmonary tuberculosis, formation of Ghon complex and tubercles.

Heart and lungs diagram unlabeled

Human lungs and heart anatomy, unlabeled.

Thorax anatomy unlabeled diagram.

Human heart cross section and lungs anatomy.

Lung cancer, medical drawing.

Tumor in lungs diagram, unlabeled.

Metastatic cancer diagram

Cancer spreads through blood circulation from pancreas to lungs, unlabeled.

Head anatomy median section, medical drawing.

Median section of human head diagram with details of brain, sinuses, tonsils, oral and nasal cavity, pharynx and larynx, unlabeled.

Vocal fold, labeled diagram.

Anatomy picture of the larynx, anterior and endoscopic view, showing respiration and phonation positions.

Respiratory system, unlabeled diagram

Human respiratory system diagram complete.

Respiratory system, labeled diagram

Human respiratory system diagram complete with labels.