Recent comments in /f/askscience
reboot-your-computer t1_jdhoa5v wrote
Reply to comment by Immortal_Tuttle in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
I’d guess they were quite focused on the mission, but there could have been observations made about this issue regardless.
hawkwings t1_jdho1vv wrote
Reply to comment by Dark_Believer in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
0.1 G would cause dirt and water to go down to the floor. That might make cleaning easier.
Immortal_Tuttle t1_jdhnxw3 wrote
Reply to comment by reboot-your-computer in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
That's what I wonder if anyone did any research while they were on the surface of the Moon or were they just too busy keeping astronauts alive :)
[deleted] t1_jdhmfx2 wrote
RudiGoat t1_jdhkw12 wrote
Reply to How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
Saw a video a while ago where an astronaut talks about the hassle of doing your business in space. Apparently you have to be really aware of your bowels because gravity isn't pulling on the waste and you don't get that feeling of "it's time to go" as strongly.
More generally, just knowing what I know about how the body works. Digestion is just a bunch of muscly tube shoving nutrients around. It's not as gravity dependent as you'd think. Might make your guts feel funky but doesn't affect a whole lot.
GavUK t1_jdhkox2 wrote
Reply to How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
I recently attended a presentation by Tim Peake (a UK astronaut) and, as well as the more commonly known issue of reduced sense of taste and smell, the other issue with eating in space is that you quickly feel full as gravity isn't pulling the food down to the bottom of the stomach so triggers the 'full' feeling and you have to get used to ignoring it.
Surprisingly though, you don't need gravity for your body to pull food down to your stomach when you swallow it.
Busterwasmycat t1_jdhkhiu wrote
Reply to comment by andreasbeer1981 in Does the metal in the solid core of a rocky planet have any special properties? by VillagerNo4
That is interesting and pretty much supports the "we don't know a lot" idea. Not something easily studied.
HiHoJufro t1_jdhkbzp wrote
Reply to comment by Best_Call_2267 in Do insects have "meat" like other animals? I know that grubs, mealworms, etc. are eaten in some parts of the world, but if, for instance, beetles were the size of cows, could you butcher one and make beetle steak? by 9RFCat9
>In the UK you can buy them in Selfridges food court.
Oh man, I just got back from London and didn't notice this when I checked out Selfridge's! Totally would have done that.
bionor t1_jdhidjf wrote
Reply to comment by kompootor in Why do neurons have more dendrites than axon terminals/terminal buttons? by eyyyyy
In addition to that, I've read about a recent discovery where they either found a new type of dendrites that can send signals as well, or that the regular dendrites could.. IDK, I don't remember, but something along those lines. Was from a reputable source I believe. Do you know anything about it? What I remember for sure is that they said this new discovery meant there were more ways for information to be transferred than perviously known and that it could have implications for our understanding of consciousness.
[deleted] t1_jdhgoml wrote
Reply to comment by Kerwinkle in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
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reboot-your-computer t1_jdhghmx wrote
Reply to comment by Immortal_Tuttle in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
If they did, it was probably due to the exposure to 0G for a few days before even getting there. The moon has gravity so we could assume that would prevent such things from occurring. A question this brings me to is how long does it take to fully regain those senses? Would the short time on the moon under some amount of gravity bring the senses right back or does it take time? On top of that, was this an effect we even understood when we were still putting people on the moon or was that too short of a time to really observe this?
[deleted] t1_jdhevdo wrote
Reply to comment by Cow_Launcher in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
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S0litaire t1_jdhcz50 wrote
Reply to comment by [deleted] in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
yeah, that's what happened in Skylab1.
The spider food got loose that the crew said F!-that, let it burn up in re-entry!
Cow_Launcher t1_jdhcj35 wrote
Reply to comment by ClemClem510 in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
> ...gravity pushing that food down isn't really the main driving force. What does most of that job is layers of smooth muscle, that contracts and pushes things along without you even being conscious of it.
For anyone who wants to know more, this process is known as peristalsis.
Certain neurological conditions (e.g. Paralytic Ileus) can impact it and the results of this certainly prove that gravity doesn't play much of a part in the movement of food through the gut.
[deleted] t1_jdhbgfd wrote
Reply to comment by Cinnamongoil in Where do rumen bacteria come from? by ryum1503
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tjeulink t1_jdhbcwb wrote
Reply to comment by jatjqtjat in Where do rumen bacteria come from? by ryum1503
There's evidence that that is the role of the apendix, it functions as a refuge for healthy gut bacteria, even during antibiotic treatments.
And don't spread misinformation.
https://www.sciencedaily.com/releases/2019/09/190918131447.htm
>Scientists from the Wellcome Sanger Institute, UCL, the University of Birmingham and their collaborators discovered that whereas vaginally born babies got most of their gut bacteria from their mother, babies born via caesarean did not, and instead had more bacteria associated with hospital environments in their guts.
Cow_Launcher t1_jdhb7fk wrote
Reply to comment by Kerwinkle in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
The problem with aircraft is that the cabin air is very dry, (bleed air from the engines that has been run through airconditioning packs and is at least partly recycled). This dries out the mucous membranes in the nose, which in turn dulls your sense of smell.
Your sense of taste isn't standalone - it depends heavily on your sense of smell. So with that missing/impaired, food will taste bland or even entirely different to how it does on the ground.
Come to think of it, this may also be a factor in the ISS as well as the congestion problems they have. It would be interesting to know if they have humidifiers on board up there.
::Edit:: Yes they do, sort of! it's the Temperature and Humidity Control (THC) subsystem of the Environmental Control and Life Support System (ECLSS).
HidingFromHumans t1_jdhaybk wrote
Reply to comment by privateTortoise in Does the metal in the solid core of a rocky planet have any special properties? by VillagerNo4
Damn you just unlocked some memories
I got gifted a box full of books and I think I read every single one I had
Mightve been what made me interested in how the world works which made me love science
HidingFromHumans t1_jdhaxel wrote
Reply to comment by privateTortoise in Does the metal in the solid core of a rocky planet have any special properties? by VillagerNo4
Damn you just unlocked some memories
I got gifted a box full of books and I think I read every single one I had
Mightve been what made me interested in how the world works which made me love science
Player-X t1_jdhahkm wrote
Reply to comment by SabreToothSandHopper in Where do rumen bacteria come from? by ryum1503
Bacteria gets everywhere that it can survive so it's not unreasonable that some will end up in the cow vagina, and birth is messy so it'll also end up in the calf on its way out
TeeDeeArt t1_jdh8wd7 wrote
Reply to comment by jackyj888 in (Biology) How far down your spine can you break before respiratory impairment? by Anomaly-Friend
> Tldr: If you aren't a paramedic or higher, you shouldn't be administering insulin or dextrose/glucose either way.
Quickly checked current Australian and uk first aid resources (red cross training), and they do still seem to recommend that first aiders do it (giving sugar/sugary foodndrink) assuming the diabetic person is still responsive. I'd maybe be a bit more careful with wording when giving medical advise or first aid training online without being very specific as to where it applies.
Immortal_Tuttle t1_jdh8uuo wrote
Reply to comment by Dark_Believer in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
What about the Moon? Did astronauts there experienced such symptoms or not?
[deleted] t1_jdh8rz4 wrote
Reply to comment by seanbrockest in How does the gravity (or lack thereof) on the ISS affect digestive systems of it's occupants? by Bob_Perdunsky
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[deleted] t1_jdhsdm7 wrote
Reply to How do astronauts deal with periods in ISS? by LorDzkill
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