Questions tagged [stress]
18 questions
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Why is the heart adversely impacted by chronic psychological stress, yet it benefits from routine physical exercise?
Chronic psychological stress is commonly said to be deleterious to the heart, and predispose one to cardiovascular disease. Yet the opposite is said about regular aerobic exercise. Physiologically, What is the difference between psychological stress…
froimovi
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Can insects or mosquitoes be astonished(shocked)?
Can insects like mosquitoes get astonished by sudden happenings?
Background
I missed hitting a mosquito on a wall with great force. However even though I missed hitting it, it was dead.
So I wonder if insects can reach death or at least astonished…
KYHSGeekCode
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What is the impact of stress on the human body?
Can stress trigger any changes in the human body? I'd like to know more about things less commonly known than, for example: sweating and tiredness. What are the long term risks of chronic stress? Do stressful people have higher chance of having…
I don't know...
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Why do hand/fore-arm muscles "lock up" after very high-powered effort?
Inspired from Why does it hurt the next day after doing significant exercise? with its excellent answer:
In climbing, you can put tremendous load on the hand/fore-arm muscles (specifically, flexor pollicus longus and flexor digitorum profundus).…
AnoE
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Do findings on promoter methylation of the serotonin transporter gene and amygdala activity contradict the established view of serotonergic function?
In this article http://www.nature.com/neuro/journal/v17/n9/full/nn.3778.html it states that
Increased promoter methylation of the serotonin transporter gene predicted increased threat related amygdala activity.
I'm finding this somewhat difficult…
Meep
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Do jellyfish have extra energy reserves for emergencies (a "fight or flight" response)?
My friend is writing a story about jellyfish, and we couldn't find out if jellyfish have the equivalent of a "fight or flight response" or an adrenaline rush. In other words, do they have reserves of energy which lets them do things they wouldn't…
Hippo
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Are there five common fear responses in animals?
It's been claimed on psy SE that are five common fear responses Fight, Flight, Freeze, Fawn, and Faint (or maybe fright, flight, fight, freeze, fawn as in a post further linked from there).
To me this classification doesn't seem well supported by…
Fizz
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Is homocysteine converted to glutathione during oxidative stress?
From the paper titled "The basis for folinic acid treatment in neuro-psychiatric disorders" by Ramaekers et al., 2016:
On the left side of the figure, the purine metabolite GTP serves as the substrate for the GTP-cyclohydrolase I enzyme (GTPCH) to…
CopperKettle
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Can ' functional' stress 'forced upon' a cell actually cause cell mutations when they divide and reproduce?
If a group of cells are forced to go beyond their regular biological parameters that they should be under given ' healthy' functioning and while existing in these stressed states some of the cells divide and multiply would the added stressful states…
201044
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Why sudden stresses cause stuttering and/or other impairs in children?
The question is simple: Why sudden stresses cause stuttering and/or other temporary or permanent impairs in children (and even adults)?
MySky
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Biomechanics of cells (stress, strain, tension..)
I am confused about the difference between stress, strain, tension, pre-strain and prestress in cells (especially in in-vitro experiments, like cell spreading on a substrate, cell doublets, cell rearrangements in epithelial tissues).
How are these…
Remember
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Cortisol and inflammation
Cortisol is released under stressful condition. It is known to have anti-inflammatory role. In fact it is used as potent anti-inflammatory drug also.
Though stressful conditions are unwanted and unfavorable, the body's response to such conditions by…
user32340
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Measuring, using and analyzing skin resistance in kohms
What are ballpark ranges of skin resistance in Kohms for average men and their significance (for example 500-1000s = stressed vs 1000+ = fairly relaxed)
What do various skin resistances in kohms say about a person's emotional or arousal state:
For…
auto
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What is the relationship between stress granules and circular RNAs?
I have read that circRNAs act as sponges for miRNAs and that stress granules help reduce chronic cellular stress and they are composed of proteins and RNAs. I'm interested in the relationship between these two phenomena in Alzheimer's disease. They…
Shadan Alrawi
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Cortisol in sharks
Is there an established method for measuring stress hormone levels, like cortisal, in sharks? If so, is it known what levels of such hormones create significant detrimental effects like decreased immunity?
Kerri
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