Sneeze, cough, and hiccup | Respiratory system physiology | NCLEX-RN | Khan Academy

Learn how our brain receives information from mechanoreceptors and then responds by controlling muscles in a well-coordinated system, and how all of this can lead to a sneeze, a cough, or even a hiccup! Rishi is a pediatric infectious disease physician and works at Khan Academy. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Created by Rishi Desai.
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[@khanacademymedicine]

This is called the photic sneeze reflex! Poorly understood, but may have something to do with the input to the brain via the trigeminal nerve (cranial nerve 5).

[@chalonpalmer4745]

Why do we cough?

[@beckysegundo6688]

What about sneezing triggered from plucking my left eyebrow?

[@zariahgoodwithbabydolliesf1663]

khanacademymedicine do we get cough reflex in our brain?

[@9-volt247]

@@zariahgoodwithbabydolliesf1663 Sorry, now Khan Academy Medicine doesn't comment anymore.

[@beckysegundo6688]

It's also possible to cough & pass gass at the same time. My mom described it as "coughing on both ends"😄

[@Misschilaka]

I loved how he explained this. simple, wonderful. very easy to understand!

[@sparkles8109]

Hey thanks for the lesson! It's nice to know how our body works! BTW you're so much better at drawing and writing on your computer, I'm not so good at it, LMAO!

[@farah5189]

so good. thank you so much!

[@Fernando-jy6ut]

Khan academy... My favourite tutor...

[@michaellopiccolo9770]

Excellent work. Great pace. Taught with laymen's terms for all to understand.

[@LIDYAEIL]

Ive read somewhere that the hiccup reflex exists to avoid cold water running into the trachea. Love these lectures!

[@Aliamsb]

Thanks from heart 💜

[@salutationgratulations6895]

I absaloutly understand every word of this

[@mounirbaroudi5890]

Very good video. Could you expand on what the distended stomach has to do with the hiccup reflex?

[@beckysegundo6688]

I've told people that I sneeze thru my ears😄. It's not literally coming thru my ears, just can seem that way. I keep my mouth closed & the air comes thru my nostrils sounding like a car horn or duck quacks. I learned it when I was 9 cuz I hate spraying out. Once I had the hiccups when I was 13 & after one single hiccup, I coughed the next second. No more hiccups😁.

[@Ragamuffyn]

Could you post some videos with advanced medical topics?

[@Guitarboredguy]

I've noticed that looking at bright lights when I'm on the "teetering point" of sneezing will often cause the sneeze to go forward. Is there any physiology to this?

[@techgenius2000]

what program are you using?

[@THETSUNAMIBLADE]

Nice cake Rishi. :D

[@carlosbanda2755]

Can a hiccup be caused if the diaphragm muscle twitches?

[@hredn]

Odd, when I sneeze, the air comes mostly from my mouth, not my nose.

[@chalonpalmer4745]

Is coughing a loud sound when I cough?

[@danny55531]

How you write your lowercase e's disturbs me...

[@zariahgoodwithbabydolliesf1663]

I cough when something’s in my throat

[@zariahgoodwithbabydolliesf1663]

I cough from my mouth in my throat

[@user-nb9rq3lx7y]

What about laughing and crying???

[@alvinseville853]

You have to laugh very heard dat tears come out

[@suryagayathris7136]

I did not under stand

[@ruqayasuadad3105]

I KNOW U WILL NOT REPLY BUT THANKS

[@danmartin719]

ruqaya suadad what ok then

[@anime_lover1289]

I willl

[@timless5157]

??? Sneezing goes through the mouth not nose.

[@maxdogger1560]

Yeah, I was surprised when he said that too.

[@user-wt2tf5xu7w]

But i thiught that air blows out of the mouth when we sneeze

[@maxdogger1560]

You’re right, it does.

[@soham9667]

@@maxdogger1560 the air blows out from nose 4:30

[@zariahgoodwithbabydolliesf1663]

Is coughing a loud sound?

[@TheNevadar]

no.

[@9-volt247]

@@TheNevadar YES!

[@partyrockingpandas9612]

i sware its davidbrowngameingTV