1 Single breath of 100% O2. 2  During the following expiration, [N2] increases from 0% (pure dead space gas) to equilibrium (pure alveolar gas) (i.e. plateau). 3  Using [N2] vs. 4  graph, anatomical dead space is taken to be at the mid-point of the transition from conducting zone to gas exchange zone.
Best Black Garden Hose Holder wall mount-Durable , very powerful hanger it can hold 100ft heavy hose -keep your backyard neat and clean. Currently unavailable. We don't know when or if this item will be back in stock.
Stone capacity: 45 lbs. This top-of-the-line wall mounted heater is engineered for the 21st century. The lighted control panel built on the side of the heater is designed for simplicity and ease of use and it is reversible-left or right side. Control panel has 1 hour timer with a 1 to 8 hour time delay feature.