A. Glass tile is renowned for its versatility. Because it is impervious to the effects of moisture, glass tile is a popular addition to bathroom areas and spa locations in commercial settings as well as residential ones. Glass tile can be used as a wall tile to cover surfaces entirely, or as flourishes and trim pieces. They can be used for shower stall floors, and as creative centerpieces to a room in the form of murals or as unique layouts that mix colored glass tiles in a mosaic pattern.
The alveolar oxygen partial pressure is lower than the atmospheric O 2 partial pressure for two reasons. 1  Firstly, as the air enters the lungs, it is humidified by the upper airway and thus the partial pressure of water vapour (47 mmHg) reduces the oxygen partial pressure to about 150 mmHg.
As the lungs collapse back down, the intrapleural pressure will become more negative (as we saw in Part A, above, at the end of expiration). Intrapleural pressure must be low with respect to ambient air during inspiration in order for ambient air to flow into the alveoli.) End expiration: At rest, intrapleural pressure must remain slightly negative (here it is shown as -5 mmHg) as i) the lung is elastic and has a tendency to collapse or shrink, and ii) the fluid lining the alveolar surfaces generates surface tension that works to collapse the lung.