Questions tagged [injury]

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1answer
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Why is a lightning strike lethal for some and survivable for others?

Some people who get struck by lightning and some more than once (starts at 00:25) survive while others die. Looking at a wiki page for Lightning injuries Lightning injuries are injuries caused by ...
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0answers
51 views

What is the physical reason that a weak muscle means that its antagonistic muscle will tighten?

I've read online (probably from these two sources Athlean-X and Mike) that when one has a tight muscle that the antagonistic muscle tightens up as a defense mechanism. What I am trying to understand ...
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1answer
169 views

Saving lives by “conjoining” people

There are many deaths which occur as a result of a cascade of organ failures triggered by a single event, for example traumatic injuries, severe burns, infections and so on. Since blood transfusion ...
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1answer
93 views

If a hand was suddenly chopped off while holding something, would the severed hand still hold a grip?

This question was inspired by Star Wars Episode V: The Empire Strikes Back. In it, Luke Skywalker is battling Darth Vader in a lightsaber duel. Vader manages to win out and chops off Luke's hand, ...
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3answers
6k views

Why does it hurt when water touches cuts?

Why do we feel a burning sensation when water touches cuts/wounds? People suggest applying oil over cuts while bathing to prevent water touching it, but water is heavier than oil so it shouldn't work, ...
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Can you “fight” a coma or serious illness?

In an article about the latest earthquake to strike Mexico, I read that a rescuer said to someone in a gurney, "Fight for your life, please!" I've seen similar things in TV shows and movies where a ...
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2answers
102 views

Is it possible for a man to survive around 20 bullets? [closed]

A man was shown being able to survive after around 20 bullets shot him in a movie. The bullet cover was fairly random, but anyway, is there any possible way for a person to survive 20 bullet shots? I'...
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50 views

What would happen to the body if it suffered no injuries? [closed]

In this (super cute) animation: 'Jinxy Jenkins & Lucky Lou' (youtube), the girl, Lucky Lou, is shown to be so lucky, she seems to have never suffered an injury. This is, atleast, what I get the ...
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1answer
60 views

Why do we get scars?

Feeling the hardened tissue of a scar on my head I wondered what the purpose of that scarring is, such skin scars are pretty harmless but from what I understand internal scarring can cause major ...
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1answer
36 views

“Next generation” brain scanners, can they detect CTE?

I've just read the news that a "new generation" brain scanner is under development. I wonder whether they can detect chronic traumatic encephalopathy. I haven't been able to find the paper about these ...
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1answer
113 views

Does copper exacerbate wounds?

There is a three edged stiletto (weapon, not shoe) with a triangular cross-section that is often touted as being "extra dangerous" because of the triangular puncture it makes, and its copper ...
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1answer
358 views

Can skin be removed and replaced so that it maintains its original cellular structure?

The cells in our body that form tissue, such as our skin, are interconnected. I would think that cutting out tissue or trying to repair/replace it, as is done in surgery, or after an injury, could not ...
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1answer
261 views

Can brain damage caused by physical injury affect the social behaviour of a person?

Can a physical injury to the brain, resulting from an accident, and not the result of a diagnosed mental illness, affect a person's social behavior?
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Why does hypergranulation prevent the epithelialization of a wound?

I recently read about how does a wound heals. I read that when the granulation tissue protrudes out of the wound bed (proud flesh), the epithelialization cannot occur because the protruding proud ...
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1answer
120 views

Where does the exudate comes from during inflammation?

During inflammation transudate and exudate is formed by vessels. I would like to make sure if it comes from arterioles, venules, or both, and the reason why.
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1answer
780 views

If oxygen deficiency is bad even for a short while, why do people swim?

This may be trivia to many of you. Textbook says the oxygen deficiency, even for a short while can injure our cells. Then why do people go for sports like swimming? (where rhythmic breathing is ...
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1answer
19k views

What's a mouth ulcer/canker sore “made of”, and why do they develop?

Mouth ulcers are red/white rings with a crater. They are sore and last for 7-10 days. What I want to know is what they are 'made of' - i.e., what is the ring filled with, and why is the centre crater ...
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1answer
5k views

Effects of lactic acid ingestion [closed]

What would happen if I drink lactic acid? I use lactic acid to clean an espresso coffee machine and I wonder what injuries could occour drinking it.
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1answer
4k views

Why do some cuts leave scars, while others do not?

Last year I got a moderately-deep cut on my finger, and it left a scar. Six months later, the scar is still there. On the other hand, I've had lots of other cuts on my fingers, though none have left ...
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1answer
82 views

How are dental cavities different from body injuries?

I always had this question why dental cavities cause pain. I stumbled on this question on the reasons why dental cavities are painful. I have a followup question on how dental cavities are different ...
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1answer
3k views

Is a stab wound to the back lethal? [closed]

How deadly is a stab in the back? Video games, movies, and other fiction would have us believe that a backstab against a foe with a modestly-sized blade leads to immediate and certain death, having a ...
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1answer
1k views

Is there a maximum pain threshold?

Is there a maximum threshold of pain a Human can experience, beyond which point there is no noticeable difference? I ask this question in part to better understand the definition of pain and its ...
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1answer
16k views

Why does ice reduce swelling?

It is common practice to use ice packs on injuries that cause bruising and swelling. It seems to be an effective method to assist in reducing swelling. Why does ice reduce welling?
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2answers
107k views

Why Do Healing Wounds Feel Warmer To The Touch?

I fell over on my bicycle trying to avoid running over a rattlesnake, and ended up badly skinning my knee. It immediately began to bleed, but soon clotted. It has been 2 days now and it has formed a ...
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1answer
686 views

Why Is The Toughness Of Skin Different On Different Parts Of The Body?

My cat was licking my arm with his sandpaper like tongue. It hurt and the area he was licking was slightly smarting afterwards. However, when he licks the palm of my hand the feeling is rather ...
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1answer
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Can a person really die quickly from biting their tongue?

A common trope in certain circles (like Eastern martial fiction), is someone committing quick suicide by biting his or her tongue. But is this really possible? The internet turns up millions of ...