The zones of the lung divide the lung into four vertical regions, based upon the relationship between the pressure in the alveoli (PA), in the arteries...

The lungs are the main organs of the respiratory system in many terrestrial animals, including all tetrapod vertebrates and a small number of amphibious...

perfusion to various zones of the lungs. The bronchial vessels deliver nutrients and oxygen to certain lung tissues, and some of this spent, deoxygenated...

between 3 and 8 μm in diameter tend to largely deposit in the transitional zones of the lung by sedimentation. An inhaled powdery particle that is <3 μm...

aorta supply the chest (excluding the heart and the respiratory zone of the lung); and branches from the abdominal aorta supply the abdomen. The pelvis and...

rodents, there is a potential patent path for air to travel from the mouth to the lungs which can be used for endotracheal intubation. It has been suggested...

masses of dense fibrosis develop, usually in the upper lung zones, measuring greater than 1 cm (0.39 in) in diameter, with accompanying decreased lung function...

opacities in the lower and mid lung zones. In addition to this, subacute presentations may show reticular nodular opacities in mid-to-lower lung zones. Chronic...

them. The conducting zone includes structures outside of the lungs – the nose, pharynx, larynx, and trachea, and structures inside the lungs – the bronchi...

a form of occupational lung disease caused by inhalation of crystalline silica dust. It is marked by inflammation and scarring in the form of nodular...