http://swissbaync5d7ykaz7dh7v4qjrb4gmen5aj3bogxrcgbb43ij34bjuyd.onion/pdf/Books/Survival/Medicine/sectionq.htm
Commercial
liveaboards are usually between 50 and 130 feet long, and can carry anywhere from 10 to
30+ divers for a week or more. middle ear - air-containing space of the ear bordered on one side by the
tympanic membrane, which is exposed to any change in ambient pressure. Air pressure in the
middle ear space can only be equalized through the eustachian tube, which connects the
middle ear to the back of the nose. mixed gas - variously defined; basically, any non-air...