Micturition Reflex - Neural Control of Urination Animation Video.

Purchase a license to download a non-watermarked version of this video on AlilaMedicalMedia(dot)com
Check out our new Alila Academy - AlilaAcademy(dot)com - complete video courses with quizzes, PDFs, and downloadable images.
©Alila Medical Media. All rights reserved.
Neural control of urination - micturition reflex.
When the bladder is full, stretch receptors in the wall of the bladder send nerve impulses to the sacral region of the spinal cord. By way of a parasympathetic response, signals return to the bladder and stimulate contraction of the muscle of the bladder and relaxation of the internal urethral sphincter. This part of the reflex is involuntary and is predominant in infants and young children.
As the central nervous system matures, it acquires voluntary control over the external urethral sphincter. Urination is controlled mainly by the micturition center in the pons. This center receives sensory signals from the bladder and communicates with the cortex about the appropriateness of urinating at the moment. At times when it's not convenient to urinate, the center sends back an inhibitory signal to keep the sphincters closed and prevent voiding. When you wish to urinate, this inhibition is removed; the spinal cord instructs the muscle of the bladder to contract and the sphincters to open to let the urine out.
All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.

[@sanad775]

Great video! but there's a small mistake.
when your cortex receives the information that urination is a necessity, then it inhibits the somatic neurons that innervate the external urethral sphincter.
when you are not urinating, the somatic neurons for the external sphincter are not inhibited, they are working to stimulate and contract the sphincter so urine doesn't leak.

[@jogmas12]

Wow! There has to be a creator. Even to urinate has its complexities. This could not of happened by chance

[@SwatiTiwari-oi7kx]

Creator krishna

[@ushbagull1267]

He is ALLAH the most beneficient and the most merciful

[@FutureAIDev2015]

I don't mean to be a contrarian, but, how does the idea of a creator explain problems like incontinence?

[@jogmas12]

@@FutureAIDev2015 this is a fallen world. Even the animals, plants and trees get disease or things that eventually fail and not work as designed. We’re no different on this earthly plane.

[@abdullahiAH]

Allah is the one and only creator

[@prachiteejoshi5642]

Simple,clear, straight to the point 👍🏼

[@markdimitri4113]

great video! Didn't realise my toiletting was so complicated

[@nishantsen6820]

🤣😅

[@nishantsen6820]

6 years later

[@FutureAIDev2015]

So basically the internal sphincter is controlled entirely autonomously, and it will open when the bladder is full whether or not you want it to, but the external sphincter will only open when you consciously want it to?

[@salonimewara195]

yes you are correct

[@SJamdade]

It's same with the anal sphincters

[@HelloMedicAnkit]

Absolutely fantastic and short as it was needed

[@Duskysky1]

When. Your exam is next day and you are trying to watch as many as possible videos on 2x but not 1 but 2 slow ads come and destroy the whole rhythm

[@banjieagravante4227]

Short but very informative
Thank you 😘

[@prizzilllaaa3503]

Simple and Clear

[@missfathaby]

Thanks a lot for education. It's really help me to know

[@agungiwd]

6 tahun yang lalu nih kak

[@m.nandini1320]

I perfectly understood in just 1.39 minutes
Thank you for this amazing video ✌️

[@rhprabhath]

Onuf's nucleus is a distinct group of neurons located in the ventral part of the anterior horn of the sacral region of the human spinal cord involved in the maintenance of micturition.

[@unlock_mbbs]

You made this Easy sir.
But a small doubt, the external urethral spinsters which are innervated by pudendal nerve has not been discussed ,because it controls the voluntary action right...

[@ishakasmada3077]

Hasbunalaah; wa nicmal wakiil💟👑

[@tealea3547]

has the nerve gone bad or the connection to the spinal cord disconnected causing no bladder control

[@deveshkariia5206]

u made the topics so easy to learn !!!

[@stephodeh570]

Signals return to the bladder and stimulate contractions of the detrusor muscle and the EXTERNAL URETHRAL SPHINCTER not INTERNAL. Thank u

[@Ali-gg2ij]

Wow goog video bro❤❤

[@mehrdad1065]

simple and complete. thanks

[@salonimewara195]

Great video! Nyc explained

[@iitknowledge928]

Excellent analysis

[@shiloranxxer]

I Love Reflexing My Head And Arms! It’s Like I’m Flexing My Arms...

[@PrasannaKumar-od2wr]

Simply nice

[@monjilakhatun9129]

Very good

[@sophesearching]

Thank you so much :)

[@HafizahHoshni]

thank you!

[@user-ph9oq4lm9e]

Nice video!
Just a question... after the inhibition of the parasympathetic fibers the internal sphincter isnt supposed to contract again and close?

[@christineysmalone]

Interesting to know

[@suepreme1876]

amazing!

[@Aminhelal210]

Awesome

[@kitbokwarshong8847]

Great vid:) thank you.

[@Doc_Vet]

Mass 🔥

[@malehiwapaul2236]

clearly explained video

[@Lucy-yf9eb]

Is there a way to remove the large subtitles so the background pictures are visible?

[@amethyst4444]

Lucy26687 Yes, click on the "CC" button at the bottom of the screen. It's the subtitles/CC button for videos. Hope that helps!

[@Lucy-yf9eb]

nwankwo89 Thank you so much! :)

[@thangarajm9386]

nice video

[@drmdshahjahanshaju3640]

Very nice for known

[@AdoreMJ833]

Nice!!

[@mohanedraheem4405]

thanks😍😍

[@dnyaneshwarikhandare2192]

Nice video sir

[@هاشمالسداوى-ع2ي]

nice one

[@Abdullah-cz8yw]

the green fibers are sympathetic right?

[@SyedAli-eg7ow]

please make a video on biomolecules

[@monokravanh1331]

❤

[@sonurajacrypto]

Thanks to external spinchter 🤣

[@dddoda]

You say this happens in toddlers. You ought to add old men as well, like it is okay to urinate on the kitchen floor.

[@pushyamitra87]

Not detailed explanations

[@n-y-mchannel1254]

Like

[@medicallifewithjohn8343]

Awesome