If you switch off a water tap, where does the water go instead? To all the other places in your town that need water. Ditto the artery. Except mostly it stays in your body.

Its debatable whether an untrained person could help more than harm by applying a tourniquet. Some sources say yes, some say no. If you are familiar with how it works and there is uncontrollable bleeding from an appendage, then yes, wind that sucker down tight.

Edit is to reflect more up-to-date instruction. You can see discussion in below comments for context.

Tourniquet use is appropriate for a bleed from a limb which cannot be controlled by direct pressure alone. Without training or instruction, an improvised tourniquet applied by a layperson isn't likely to be effective. Fortunately, proper tourniquet use can be learned in only a few minutes and an emergency services dispatcher can instruct you on tourniquet use if you find yourself in a situation where it is necessary and you don't know how to do it. If in doubt and the patient is conscious, it may be a good idea to first attempt to control bleeding with direct pressure alone. Note that direct pressure is not appropriate if there are significant amounts of sharp, foreign bodies within the wound which may make the injury worse than it already is. In that case, elevation, manual arterial compression, and tourniquet use as needed will be the appropriate first-aid.

Tourniquet or not, you can help by finding a clean and dry cloth, garment, towel, applying firm pressure, and don't remove the cloth. If it bleeds through, put another cloth on top and keep the pressure on! You can also apply pressure to the artery above the bleed. Groin for the leg and under the biceps for the arm.

Don't remove any foreign object that may be sticking out of the person, don't put yourself in danger that might cause a second casualty, and don't move a patient who may have suffered a spinal trauma unless absolutely necessary.

Right, but what happens to the blood still in the vessel? Does it just dry up?

But the one who survived, could theoretically get out of it by declaring “they were the chosen one” (with the right tone), and then take over the neighboring village.

unless you are first aid trained i reckon follow the advice of the medical professionals that guide you through it after you call 111

I'm so impressed with the comments so far from surgeons and folks who know what they are talking about, I would like to extend the inquiry. When an average citizen or family member comes upon somebody with a profound limb injury, say a teenage girl with a major shark bite below the knee, or a gunshot wound to the lower arm, would it be correct (after calling for help etcetera) to immediately apply a tourniquet of some sort as a life saving measure? As opposed to attempting to apply pressure for instance? I'm just wondering what average people should consider in the absence of immediate first responder care.

Neighbouring villages. It was never 100% simultaneous saturation. But really, you're applying logic to witch hunters? That seems ineffectual.

Electric forces.

The same thing happens when you push two magnetic north poles together, they spring apart again when you let them go, or when you lift a weight above the ground, it "springs" back downwards under gravity when you let go. The "information" of the molecules, as you call it, is simply the place where they have a state of equilibrium, where the net forces acting on them are equal in all directions, as they were before you changed their position by deforming the material.

In this case, though, the forces at work are electric.

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Into all the arteries that feed off them before the point of closure. Think of it like a giant city where one highway has been closed. The traffic goes onto other roads.

I think you are imagining the artery in question to be like a long hose with no where to go and the tab wont shut off. There are offshoots from the artery to smaller vessels ‘arterioles’ and then to the capillary system. The body had a fascinating ability to produce these vessels and essentially redirect that flow as needed.

Also imagine if the tap of the hose is the heart. The vascular system would be a hose with like thousands of other tubes attached to it. If one gets blocked the water just goes to the other tubes. It doesn’t just fill the blocked one up uncontrollably

Depends on the force that is applied. For gaseous pressure (equal force on all sides), sure (you can argue this from symmetry). For compression force (like a vice), the cube is stronger, because all the force in this case would be applied at just two points on a sphere.

Where does the blood go then? Wont the heart just keep pumping blood into that now closed system, increasing the pressure?

>The only possible image that could’ve created the new blurred image is your original photo right?

No. Just consider the extreme. What if you blurred an image so much that it turned into a solid color?

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if you just close off the large blood vessels, where does the blood inside them go?

Hi, I have a master in computer vision, let me explain.

If you put it in terms of signal processing, bluring is what we call a "low-pass" filter. It conserves low-frequencies, but deletes high frequences. Looking at the image in the frequency domain using a fourier transform makes that obvious. So thats why you can't unblur them. The information is gone. Its like erasing part of an image, except in frequency space.

Some machine learning methods can sharpen an image. Understands that they do not recover the information that was lost. Instead they make an "educated guess" of what the lost information might have been.

> The only possible image that could’ve created the new blurred image is your original photo right

No, its not, and hence the problem.

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That's a good question.... I'll explain it to you scientifically.
The human body has a natural system called acid-base balance that helps to keep the pH label stable. It is essential for the normal operation of biological processes. There are three major organs in our human body that help to regulate the balance. They are the liver, the kidneys, and the lungs. The PH of our bodies is 7.35-7.45 (as you mentioned). This means that our bodies are slightly alkaline. Our bodies have a variety of buffer systems made of various chemicals. These chemicals can absorb excess acid or base to maintain a normal ph level in the body.
One of the most important buffering systems in the body is the bicarbonate buffer system, which helps to neutralise excess acid in the blood.The kidneys help to maintain the body's acid-base balance by controlling blood levels of bicarbonate and other acids.
While some parts of the body are naturally acidic in order to aid digestion, the rest of the body requires a slightly alkaline pH in order to support normal cellular function. When the pH of the body becomes too acidic or alkaline, it can lead to a number of health issues including metabolic acidosis or alkalosis, which can be fatal if not treated.

But if you were the only person who survived, and your village did not, who would be around to call you a witch, let alone burn you? Other survivors? Then wouldn’t they be witches too? So you’d all have like a secret understanding? Like a special handshake, or wink of an eye?

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