Eye 5, Pupils and iris

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I learned this while looking at my eyeballs in the mirror. I realized I can constrict and dilate by focusing on pushing or pulling with my eyes. Actually helped correct one eye that was not centered in the eye and there was a small white area showing underneath it when having my eyes open.

yeseniarobles
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Great video series. Could you please make a series on cranial nerves if you have time?

espmonaco
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بسیار عالی مرسی. یک سوال من بر طرف شد.❤❤
Very very thank you

manidehghanmanshadi
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hey I know it's crazy times and you're killing it on the news updates! it's been very helpful to filter out all the lying and people talking out of their ass... Well, I know you're probably busy doing that right now, but I was wondering if you could do a video on HRV, or heart rate variability, specifically as it relates to the ANS. Thanks, have a good one :D

edit: haha, didn't realize you had a vid that went over that topic. oops

lizwalsh
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If it's around it, shoudn't it's contraction cause dilation?how is it the ither way around?

minabish