Autonomic nervous system (ANS) and physiologic markers of emotion | MCAT | Khan Academy

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[@barebone9279]

Thank you so much for talking slow. I usually loved Mr. Khan's voice. I thought I would miss it. You did a great job! thank you!

[@smylee9955]

This is sooooo well-explained! Even non-medical ordinaries such as myself’s greatly enlightened. Thanks for this!

[@alexhunt990]

Clear, too the point, love you're neat writing. Well done.

[@VickiBee]

My supervisor, who's a Senior Paramedic and Lab Technician when he doesn't work with us, had to tell me that "the vessels open up wide to let all the blood rush in that's being lost during hypovolemic shock." Then I was able to recall that the eyes dilate during sympathetic responses.

[@waldirpalacio4697]

thanks. Very good explanation

[@vixcxovivi_xc6101]

wow very helpful!!!

[@DirtyBottomsPottery]

Good stuff. Thank you.

[@NaomiGoldstein7895]

Thank you, great explanation and visuals. Is the freeze response also sympathetic ANS? What exactly happens in the brain when a person freezes? And what might be the evolutionary reasoning be?

[@mindfuleats4517]

I think freeze is actually a branch of the parasympathetic

[@ismaillahna2699]

i want this as a painting in my house in the residence near Salim house where everyone will leave

[@asnkowsaranser5412]

ANS

[@VickiBee]

At the Paramedic level, all of it turned scientific and just about killed me. I'm lousy at science, chemistry in particular. If I hadn't been LIVING with a chemist at the Ph.D level, I swear I would have failed both the ANS part of the Nervous System and Capnography. All that partial O2 and partial CO2 was monstrous to remember. I wish he would have taught US this stuff. It took until I became a paramedic to even remember that the eyes DIlate in sympathetic system and constrict in parasympathetic. I would have remember a 'wild animal chasing' you scenario. If he needs an extra job, he can teach my school but I doubt he'd want to b/c it wasn't a fancy school. Just the opposite. Not fancy but taught everything we needed to know.

[@VickiBee]

The same guy who created the original Hippocratic oath is the one who named the Sympathetic nervous system. That was thousands of years ago.

[@HSN20HMD]

Right kidney must be lower (not upper) than left kidney

[@JoeySpronck]

yep ur right

[@alexhunt990]

Yeah.... because he is trying to be really anatomically precise isn't he, heerrrp durrrp, errr da heart doesnt look rightttt huurrrpppa herrpa

[@mintoo2cool]

who controls the ANS ? what part of the brain ? because all information from the eyes and ears and skin comes in to the brain right ? And how is it that I can react so quickly to someone about to prank me or fight me, but I can't think of answers to exam questions as quickly. Why can't my body create a "sympathetic analytic nervous system" to make me do awesome at my job interviews... :(

[@unlimitedprogress3882]

+bbababonbon..bonfire! Learn to master the mind and body my friend. Meditate on it.

[@iwishyouknew3413]

bbababonbon..bonfire! Actually the reason why our automatic/autonomic nervous system is evolutionary biology response that prepares yourself during a time of a quick threat to any perceived threat like someone scaring you. The other part of the brain system responsible for motivation is on the other end of brain called the Temporal lobe, which isnt fully developed until your 25 years old. Those are two parts of the brain one is the hippocampus/amygdala for reaction to outside stimulus. The cognitive processes are part of the prefrontal cortex and temporal lobe. This is not discussing the neurotransmitters, so you might want to check that out. He specifically is talking about your own question minus the cognitive part of it.