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 central organs of the respiratory system in humans and most other animals, including some snails and a small number of fish. In mammals...

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...

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...

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...

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...

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

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

and the right auricula, and, higher up, is separated from the sternum by the pericardium, the right pleura, the anterior margin of the right lung, some...