The Micturition Reflex | Bladder Nerve Supply | Renal Physiology
Vložit
- čas přidán 30. 06. 2024
- ✨Micturition Physiology is really complex. In this video I've made an attempt to briefly summarise how the bladder is innervated, how the detrusor and the sphincters co-ordinate and what happens during the micturition reflex. I hope it helps you out!☀️
🌟What's in this video?
0:00 - Intro
0:11 - The functional anatomy of the bladder
1:30 - Bladder nerve supply
2:42 - The micturition reflex
4:56 - A few applied aspects of incontinence
✨ Other videos you may need:
🔅Structure of Smooth Muscle : • Structure of Smooth Mu...
🔅Smooth Muscle Contraction: • Smooth Muscle Contract...
❗️Clarifications:
At 2:00, the M3 receptor should have just been on the detrusor muscle.
At 6:05, the level of damage should have been just above the pons, but below the midbrain because the midbrain has an inhibitory area. So if the level is above the pons, the threshold will be lowered. But if it’s above the midbrain, the threshold will be essentially normal.
(Ref : Ganong's Review of Medical Physiology)
Sorry about that! 😔
✨ Other videos you may need :
• Renal Physiology:
• Renal Physiology
💫 For more videos like this, subscribe to my channel!
Byte Size Med: / @bytesizemed
📚Factual References & for Further Reading:
- Guyton and Hall Textbook of Medical Physiology
- Ganong’s Review of Medical Physiology
- Costanzo’s Textbook of Physiology
- Openstax Anatomy and Physiology
openstax.org/details/books/an...
- Openstax Biology
openstax.org/details/books/bi...
(The last two are links to open-source references. They are NOT affiliate links)
🌤 Note:
These are just a collection of my notes. So use them the way you would use borrowed notes from a friend. 📝
The images in this video are hand-drawn for illustration and explanation only.✍️ Hence, they may not be anatomically accurate. I am just one person making these videos. If there are any errors, that is unintentional. I try super hard to avoid them. Please let me know if you find any, so it gets clarified for other viewers. Science constantly evolves and changes. New discoveries are made everyday. So some of the information in these videos may become outdated. If you notice that, please let me know so I can update them.
⚡️Disclaimer:
These videos are NOT a substitute for a medical textbook. Textbooks are written by experts (which I do not claim to be), edited, proofread and referenced. Please use them.
The information has been sourced from multiple references as mentioned above. I draw all the pictures myself. But if I have inadvertently infringed on any copyright, that is completely unintentional. I only make these videos to impart education. If I have accidentally violated copyright in any way, do let me know so I can make the necessary changes or give credit to anyone who is owed the same.
These videos are NOT intended for patient education. They are NOT a substitute for diagnosis and treatment by a licensed medical professional. Always seek the advice of a qualified health care provider for any questions you may have regarding any medical condition, so that they can address your individual needs.
🔅They are ONLY meant to help students of medicine and health sciences with studying, and should be used for just that purpose and absolutely nothing else.
Byte Size Med. All Rights Reserved.
She referred Guyton … She Just summarised excellently what guyton tries to convey…..Very useful one…
Use gk pal which is very useful and easy to study
Love from Pakistan 💖
Tomorrow is my exam and this is the only chap I have to cover so I was thinking about reading the slides but that slides were giving me a extreme headache so I thought I should check CZcams lectures for ease and suddenly I found this fabulous channel and your lectures
Your lectures are just super helpful
That's kinda professional video I'd like to learn from every day.
Thanks, you deserve a lot.
i would like to say thankyou. i have recently found this channel. it is amazing. it helps me a lot undertanding the information in simply way.
Unbelievably to the point. Although, the views don’t indicate how great the content is!
its almost gonna b 1.5 years already and i wonder how i didnt come to know of this channel . its too much to the point. great work.
I've just discovered your channel, your explanations are amazing and helpful :)
Very schematic video! The hypogastric and pelvic plexi and somatic innervation of bladder are very well demonstrated. B3 receptor (and therefore, clinical correlate, mirabegron for urge incontinence) are readily concluded. Also, PMC (Barrington nucleus) and prefrontal inhibitory impulse are very well illustrated in a wonderful schematic fashion.
the content is really concise, informative and understandable. Amazing!!!!!!!!!!!!!!!!!!!!!
Best physiology video ever 💯. Very helpful to understand abnormalities of micturation.
That was great👀
Could never understood from textbooks
Best physiology video I have ever watched ..simple and informative
Thank you so much! 😊
@@bytesizemedthanks for this video, My mom has urinary retention after a couple pelvic surgeries and urodynamics shows detusor underactivity meaning it does contract enough to empty her bladder, she does void some but has retention.
Do you think sacral nerve stimulation can help her to completely void and no more use of catheters? She is 70
Nice work.
You converted guyton into e learning
Very well elucidated.
Thank you very much for this. It's being very helpful for my renal physiology exam
thank you so much for this great explanation, I wish you well
I have an anatomy exam on monday and this is amazing!
Thanks a lot for a clear explanation 🙏 very helpful. Neatly explained mam.
Excellent video , thank you so much.
Perfect explanation. Thanks!
This video is very helpful in understanding the reflex .hats off❤️
Incredible work.... Please make more.
What an explanation ... Hugely appreciated 👍🏻🥰
Very well explained..thank u so much..☺️
This video was really wonderful! Thank you!!!
Bless you 🌟women, you saved my time ✨✨
Great vedio appropriate content, best depiction and whole vedio is a perfect example of teaching
THIS IS AWESOME!!! Thank you so much!
Excellent video... thanks a ton ... it really cut down my work
Just amazing ❤️
It helped a lot! Thank u ❤
❤️ Thank you so much!
This video is amazing, thanks a lot
It is simple and amazing
Thank 😊
Super precise.
Ty
Assalamulaikum, Sister.I am Muslim Doctors. You are really a legender.May Allah accept your good deeds
It was a beautiful understanding.....got more involved while seeing this....pls keep ur work going...it's rocking🤩🤩🤩
Thank you very much! 😊
Excellent presentation
Thank you so much 🙏🏻
Great! Thanks so much!
Great video. Concise and precise !
Thanks so much!
This was the best on utube as of yet .
Please include special senses videos:)
Thank you so much! I'll definitely add that to my list of upcoming videos. 😊
That's one of the best explanation
شكرا لك على مجهودك، قناة رائعة
great video! thanks
Best ever explanation
very helpful!
Too good explanation
Nice explanation 😍
Thank you so much 😊
thanks for sharing!!!
This is an unbelievably good video.
Thank you so much!😊
Thank u for this...
Best ever I watched on utube
Love from Iran.
Very helpful 👌
NICE EXPLANATION ..
Using this info as a veterinarian. Haha we have so few visual learning tools. Thanks for your knowledge.
Amazing
Thank you 🙏🏻
You're welcome! I'm glad you liked it😊
Thank you ❤️
This is such a good video!
Thank you so much!😊
😲 you're a legend :)
This is such a great video…This entire playlist of renal physiology has been so helpful for me….Thank You So much…
So glad I could help😊
Good information
Very good!
Thanks!
Good Information
The ultimate 💥💥💥💥💥
Holy shit I'm in love .
Awesome
very good
How come this channel has so few subscribers and views?!
Same question I will too raise sis
Nice video .. Always forward
Nice to hear that. Thank you! 😊
Best best best best best... 👍👍👍❤️
Very informative
Thank you!
Dang it is good!
BEST VIDEO
Im in love with you. No no.. i mean im in love with your explanation.. that was awesome
Epic stuff
Thanks so much!
Nice
we are with u until reaching 100 thousand subscriber
really it's a great channel
I have a small question , do u use ipad ?
Thank you for your support! Yes, I use an iPad. 😊
Nice..👍
Thank you! ☺️
Thank you ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤
Love from Bangladesh
THANK YOU!!!
ponto-onuf neurons? inhibitory or excitatory? does
onuf motor neurons are normally actively maintain tone in EUS?
Now for treatments.. For all nerves involved.. Can it Be done
May god bless u.very helpful video.mam plez 🙏🙏upload reproductive physiology as i find difficulty in understanding
I always thought alpha 1 and M3 receptors both elicit the Gq pathway.. how are they acting oppositely on the internal sphincter?
Hi! You're right. The M3 receptor should have just been on the detrusor muscle. Thanks for catching that!
Though alpha 1 and M3 receptors when stimulated both elicit their actions via Gq pathway, the alpha 1 receptor is part of the sympathetic nervous system while the M3 receptor is part of the parasympathetic nervous system hence the difference in their actions on the IUS ( which is opposite).
would like to know if communication problem between brain and internal sphincter could be the reason why even after I had T.U.R.P surgery, I still can't void my bladder ? I will initiate mictions, but will only void between 25 to 50 ml. why can I begin urinating, and then it stop after 25-50ml ???
Turp will soon be out.. Too much complications... N not explained.. Adequately
♥️👏🏻
❤❤
If we try to stop the full bladder , it is by inhibition of parasympathetic system... right?
2:07 how does the same receptor cause contraction of one muscle and relaxation of another, M3 receptors are Gq so they should cause smooth muscle contraction
Doesn't the detrusor muscle remain relaxed to allow the bladder to store urine under the SNS, and then contract during urination to release urine during the PNS? It's written as "contracts for storage", which may be confusing.
Hi.
Sympathetic : Relaxes detrusor, contracts internal sphincter (storage)
Parasympathetic : Contracts detrusor, relaxes internal sphincter (emptying)
So the "contracts for storage" that you're referring to was about the sphincter and not the detrusor.
Sorry if that was confusing. I hope this helps! 😊
@@bytesizemed Gotchya thank you!! Great video by the way!
🙏🙏🙏
Where can i find the Slides 🥹
and Thank you ❤❤
Beauty super thanks
What about staccato voiding?
people like you should be teaching med school
Woww
There is a doubt . A LESION BETWEEN L3-S1 will cause Automatic bladder or autonomous bladder?
Last one I think is called urge incontinence