What about parts exposed to low pressure but. not covered in touch skin? Lungs? Eyes? Maybe intestine parts?
This video whose link I dont seem to be able to insert is also relevant
Ok, the whole body now 
What I saw is nothing mich than the Chinese cupping therapy !
Celera 500 passenger at top flight level:
Maoraigh wrote:
What about parts exposed to low pressure but. not covered in touch skin? Lungs? Eyes? Maybe intestine parts?
Not much from the vacuum itself, although lung damage is possible if the decompression is sudden.
The body is mostly various bags of liquid. Liquid does not appreciably compress or expand under pressure, and the areas filled with gases tend to have links to the outside world. Think of what happens to a plastic water bottle when you climb / descend when it is full (not much), compared to when it is empty (visibly expands / gets squished).
When exposed to vacuum, volumes filled with gas and linked to the outside world will evacuate quite quickly. The body itself will not expand that much – the expansion of the “Arm in Vacuum” is more pronounced since the rest of the body is still exposed to ambient pressure, think of a water balloon being squeezed at one end, if the whole body ends up in the vacuum the tissue does not expand anything like that.
I recall, from the BSAC scuba course many years ago, that it is possible to burst lungs just in a swimming pool – an ascent of about 5m, with a deep breath at the bottom and without any exhalation on the way up, can do it. That would be 0.5 bar. I have no idea if this is true; scuba instructors are known for the occassional tale
In an aircraft, you could achieve that, going suddenly from say 6000ft cabin altitude, to FL300 (0.18 bar). However, there have been a number of accidents where a piece of the hull came off and the effects on passengers must be known.
you can only hope it’s over quick in these cases. There have been scuba training accidents where students panicked on the bottom of an olympic pool and didn’t exhale on the way up. Not pretty.
Oxygen and carbon dioxide fixed in red corpuscles might be OK.
Carbon dioxide and nitrogen in the plasma should come out of solution and form bubbles. This will cause vapour lock. The Garmin Autoland system, if automatically deployed on decompression, will enable much physiological data to be collected after a safe landing.
A year or two ago there was an interesting article in one of the German aviation magazines on how emergency oxygen supplies have been limiting the direct route from Europe to East coast China over the Himalaya as there are extensive stretches of the route where an emergency descent would not be possible due to terrain.
Correct. It involves a bit of contingency planning using escape routes, many airlines now fly it.
Good info here https://ops.group/blog/l888-the-silk-road-airway/ and even better pictures here https://www.flickr.com/photos/mathiasortmann/albums/72157630581990930/
The view on L888 is spectacular.
