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.
Toilet stabilizer. The jack safely increases the weight capacity of a wall-mounted toilet from 300 pounds to 1,000 pounds*. The stainless-steel jack mounts under the toilet bowl, provides a pedestal that works with the existing carrier, redistributes the weight, and reduces vibration and strain to the mounting bolts.