and Imagine that you are walking down the street on a cold winter day without the right clothes and suddenly it starts to be very windy the wind starts to hit you and suddenly you start to shiver now let's think about another situation it's just at the show your favorite band with that crowd singing the songs together And then the artists start telling their favorite song and when you see it you're also shivering but wait a minute you've asked why we shiver The vast majority of the times we do chills this actually related to temperature changes
and remember the last time you got really sick with bed flu and then you even got some chills And with that you got chills Well that makes perfect physiological sense and is related to changes caused by the system sympathetic nervous a part of the autonomic nervous system very important for various regulations and volunteers of our body and autonomic nervous system is important for regulation of and parts of our body like the intestines the arteries and even the contraction or dilation of our pupils we divide into two large systems the sympathetic nervous system and the sympathetic
nervous system in a very simplified way the sympathetic nervous system causes reactions related to the fight or flight system which are basically involuntary bodily changes that prepare us for danger situations while the parasympathetic nervous system is more related or with relaxation situations or less aggressive situations within the sympathetic nervous system danger responses we are goosebumps the correct name actually it's piloerection the pilomotor reflex which is basically a response that makes the hairs on our body stand up under the skin there are thousands of tiny muscles called hair removal voters one for each hair on the
body the nerves Wrapped around these muscles transmit electrical signals that they tell him when to meet there when that happens the muscles they contract and ended up causing the erection of hairs all over the skin that I think it 's cool to notice is that as much as this reflex that the motor is related to the activity of the sympathetic nervous system itself, it doesn't necessarily happen only when we are in danger I, for example, get goosebumps listening to this kind of music here, oh the cake or even with this iconic scene from the Avengers
1 movie and it will be good or were you also like the video when you are enjoying it content, this totally freaks me out, as you can see the chill reflex happens when we are suffering very strong emotions, whether positive or negative, and this makes perfect physiological sense because there are several connections between our brain's emotional processing system and activity of the autonomic nervous system in fact connections between the Olympic system the area of the brain responsible for processing emotions and the areas of autonomic control o they are important to carry out numerous automatic responses
that help us keep us alive we are walking on a dark street and we start to feel afraid of something our sympathetic nervous system will trigger because of the response to the fear we are feeling this trigger will increase heart rate respiratory rate will divert blood flow to your leg muscles and even go high i can energetic your body and in this set maybe it even makes me shiver now what is intriguing to think is that all these answers i I've said so far It has some sort of value for a fight or flight response
but the shiver doesn't you need to increase blood flow to your legs to be able to get out of that dangerous situation you need to increase your heart rate to actually increase blood flow for other parts of your body you need to have a wider viewing angle And for that you need to dilate the pupil but and goosebumps What's the point of this because it is Technically goosebumps work more as a thermal regulation than actually a response to prepare us for some fight or flight system at least in We human beings goosebumps have the ability
to cause a pocket of hot air that manages to make the heat exchange between our skin and the external environment difficult, causing there to be a certain regulation to make you a little warmer but considering that we have very little hair on our skin, the answer is one of the most ineffective for keep us warm during the cold and Why do we shiver well? The simplest answer is in evolution, we shiver because this is a reflection that we had in common with several other ancestors of our animals that use this as a way defense look
for example cats lions or porcupines he has this same type of pilomotor reflex that is quite important for them as a defense system because they go to Get a little bigger with these raised hairs, thus avoiding contact with predators Also if you are thinking about other animals like bears This piloerection is very important to keep them warm during the cold because he has a lot of hair now I never stop imagining what it would be if cats dogs or other furry animals could get emotional with some music or at least understand them would they also
have this piloerection answer well month and you didn't get goosebumps but you liked the content I ask you to subscribe below and activate the notifications by clicking the bell Thank you very much for your attention and see you later