Questions tagged [death]

A state in which an organism or a cellular system, as defined by its full set of functionality, ceases to exist (i.e., most of the functions are irreversibly lost).

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What is operating temperature of the human brain?

I've heard several times that human brain can die in temperatures over 40 °C, or under 10 °C, as an engineer I'm curious. In what temperature region can brain properly work? And just an underlying ...
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What is the death mechanism of an electrocuted Mosquito?

While using the Electric bat, does the mosquito get killed by primary electrocution, or it secondarily by burning?
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Alternative conditions for Liquifactive Necrosis

A person is beaten on the head hard enough to swell the whole front part of the head. The body is thrown into the river and recovered after about 36 hours. Is this condition enough for liquifactive ...
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how long after death can a body exhibit an immune response

I suppose this is part of a larger question - at what point do the body's coordinated systems (Endocrine, Autonomic nervous system etc) begin to fail? Within hours? Days? Minutes? Of course this ...
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How are cells that have died replaced by new ones?

I'd like to have a clearer picture how cells that have died are replaced by new ones. I assume the following: Normally, when a cell dies it will be replaced by a new one of the same type. It will be ...
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What kinds of fish tend to have a rapid death after being caught?

I am asking this question because I am trying to make my diet less cruelty-oriented, for this reason this question can be related to trolley problem since I am coping with an ethical problem trying to ...
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How do booklice avoid dessication?

I often find booklice (aka psocids) in old paper notes I have in semi-storage. These pages of paper are intentionally left in dry conditions on my desk to avoid damage. However, if the psocids live ...
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507 views

What is the medical definition of death?

What is the medical definition of death? And how do medical examiners determine whether a person has really deceased, as opposed to for example a condition like brain death?
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How and when does the regeneration of cells that have died start?

I assume that the replacement of cells that have died (or been removed by any means) doesn't work on a single cell level but starts only when some critical number of cells have died. My question is: ...
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Mammal Statistics about Natural Death Versus Being Killed?

Is there data determining what percentage of mammals die a natural death (disease, old age) and what percentage die due to being killed and/or eaten by other mammals? In watching wildlife ...
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How did the tendency to perform death rituals evolve?

Both elephants and humans perform rituals when deaths occur. However, I do not see any evolutionary benefit of this. The rituals take time, which apparently could be better spent hunting, foraging, ...