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The inner fold pleura closest to lung tissue is called the visceral pleura.
The condition where the lung tissue collapses is called atelectasis. This occurs when alveoli in the lungs deflate, leading to reduced gas exchange and potential respiratory issues. Atelectasis can be caused by various factors such as blockage of airways, pressure on the lungs, or underlying lung diseases.
If the pressure in the lung is greater than atmospheric pressure, air will flow out of the lungs in order to equalize the pressure. This is called exhalation or breathing out.
It is the tissue which surrounds and supports the actually functional lung tissue
Lung tissue is alternatively called parenchyma. It is actually made up of clusters of soft, spongy air sacs known as lobules.
In lungs there are several types of tissues, depending of what part of the lung you're referring to. It gets thinner and thinner from bronchi to alveoli, for example with just one layer of cells in these last ones.
Each lung is covered with an enclosed membrane called the pleura. The pleura consists of two layers: the visceral pleura, which directly covers the lung tissue, and the parietal pleura, which lines the chest wall. The space between these two layers, known as the pleural cavity, contains pleural fluid that reduces friction during breathing and helps maintain pressure for lung expansion.
Inhalation is caused by a reduction in air pressure inside the lungs by increasing their volume through diaphragm contraction. Exhalation is cause by the decreasing lung volume upon relaxation of the diaphragm. The elasticity of lung tissue causes the lung to retract, increasing the internal lung pressure above atmospheric pressure and the air moves out.
Alveoli (pulmonis) or just alveoli.
Fluid located in the lung tissue is called atriovacural fluid. (pronounced atri-o-va-cural) This fluid builds up as a result of many factors; including smoking, bad diet, high cholesterol and oral sex.
Pathological lung sections differ from normal lung tissue. Pathological lung sections include the pathological tissues of fibronectin, collagens, and proteoglycans.
A deep breath for lung ventilation is called a "sigh." It involves a larger intake of air to help expand the lung tissue and improve oxygen exchange. Sighs can happen involuntarily as a reflex to maintain lung function.