Neurology | Sympathetic Nervous System

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In this video Professor Zach Murphy will be discussing the thoracolumbar outflow of the sympathetic nervous system. This will include the preganglionic cell bodies from T1-L2 of the lateral horn in the spinal cord. We also talk about the target organs, the effect that they have on them, and the various ganglia involved with this system. We hope you enjoy this lecture and be sure to support us below!
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[@NinjaNerdOfficial]

CORRECTION AT 6:14 The sympathetic nervous system doesn't cause contraction of the ciliaris. It actually relaxes the ciliaris which tightens the zonules causing the lens to become more flat, which is important for far vision. Sorry for that mistake ninja nerds!!!

[@chanoch300]

oh didnt notice that - u r the best!

[@30SecondsMedicine]

Ninja Nerd Science my textbook tell me the pregnant uterus will contract when the sympathetic system excites

[@sofoklispittokopitis7732]

A suggestion which for me at least i think would be great, can you post a link with photos of your board notes that you are showing us before you start and one after you finish with notes of the lecture. It would be great. Your lectures are amazing.

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sir please increase the volume of your videos sir.....its inaudible even after putting the maximum volume in my laptop

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Thank you very much Sir.

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I’ve been teaching medical students & residents for the last 30 years at Columbia Presbyterian Hospital in New York, so I have seen the crème de la crème - but you sir, I have to say, are A+++. Thank you for your clear and concise presentations which I recommend often to my students.

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Logical science for anatomy ! easy for US memory !

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Mennnn. I got more from this video than 4 Hours of Nursing Anatomy. God bless you bro. Keep on Recording

[@גלעדצביאלי]

You are awesome!! One request: for future videos can you take a shot of the whiteboard after you have finished the lesson? I think it can be very usful. Thank you again!!

[@xhuljanoshehu4399]

Check on the Website, you can donate and then download Fotos from any lesson.

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You can go on the Patreon account.. I think they provide photos there.

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Take a screenshot

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Zach, you are the absolute BEST!!!!!! Thank you for this and all of your videos.

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I’m in med school and I learned more from your videos than reading my books hahahahaha

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Man, you are too good !! The humor you put into this video made it more interesting . Those plexuses always confused me, now they have started to make sense . Thanks, to your hardwork !! Keep it up 😊

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Thank you so much for this! I'm in Med school and your videos honestly save me for Medical Physiology!!! You're amazing!

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Im a Police Officer and we learn an overall of this stuff in a DRE program (Drug Recognition Evaluation) but this is really more of what I want to know. More in depth.

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This is one the channels that should be introduced to students. The diagrams and processes are very well explained. I personally like the explaination which was made easy for me to understand.

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because you focus in one system , you're capable of being informative and you've the key of the watchers mind

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Thanks

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No problem

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I am a APRN planning to return for a post masters certificate in pysch/mental health. In preparation for this, I have turned to lectures to review the nervous system and other related basic A/P. I really enjoy this lecturer. He is very knowledgeable and his teachings are reliable. He identifies ambiguities as he notes them in the textbooks accordingly which I respect. He is very enthusiastic and I am glad I found him. I wonder what he is up to these days. Nonetheless, thank you for sharing your knowledge.

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This is just so clear and well explained! I can't thank you enough.

[@aleksandarm.2377]

Wow I did not know for switching receptors in uterus im so glad that listening to your videos i always learn something more than just the topic that you're doing! You are amazing.

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Thanks!

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i dont know how to thank you again zack but ur videos are so awsome they save the pain to go to the texts most times and its very very helpful when i prepare for my anatomy exams thanks a lot i get to understand a lot of things instead of just blindly reading the texts thank you again . this makes anatomy much better

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that is an amazing visual that I can ever see in a presentation, it's like a lightbulb switch after watching this. thank you

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I had Scheuermann's disease as a teen and when it developed, I began having a fast heart rate, sweating, anxiety, Raynaud's/acrocyanosis,flushing/blushing, and orthostatic weirdness and erratic energy levels. The docs thought I had a pheochromocytoma, but that was negative. Adderall actually helps. I had my spine corrected in 2011 and look and feel awesome.. I workout a lot and built a lot of muscle... But my sympathetic nervous system is still super super super sensitive. Metanephrines and other adrenals are all normal. I am completely convinced there is something related between my thoracic spine (my curve apex was T8) and my sympathetic nervous system overaction. 20 years since diagnosis, I finally found a health care team who says I am not crazy. It's likely not going to kill me... But I'll tell you, it can be very frustrating. There is basically no known medical studies involving what I'm conviced of (idiopathic scoliosis/kyphosis related to hypersensitive SNS), I'm basically on my own LOL. Great video.

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Your videos and lectures are superior. I have always wondered how I could have a glass of coffee with you one day. You are a true mentor. I love everything about your videos. May you live Longer. Oscass Jimmy

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You saved my life. I barly know about Sympathetic nerve system. Please, keep going. Our lives would be too boring with books.

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sound is perfect...put on ur earcords if unable to hear...crystal clear clarity of lectures...

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huge respect sir...ur vdos are soooo helpful that I can't explain..love from India...thank you soooooo much

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Hi I am Pharmacologist Nicely, explaining & interesting video

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Sir your an inspiration for all medical students really made neuroanatomy easy 🤩🤩🤩🤩🤩

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legend tells of a legendary teacher; whose teaching skills were the stuff of legend.....................

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+Leora Prince awesome!!! We are so happy to help!!!!

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you are the best teacher i have ever seen

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This helped me a lot, thank you professor. I'm from Brazil and love your videos.

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Thank you for making topics easier to understand. I will give you a 5 star rating for every video. I like the fact you do a recap often.

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Hats off to the amount of extra effort you put into making these awesome videos!👍✌👏👏👏👏👏 Not everyone makes a Great Teacher! You really are a nerd😄 ! Its all worth the effort you made bcz it's a way lot easier to understand and visualize each topic now ! Thank you so much !

[@sanskrutijambhulkar9667]

Thanks for the correction in comments... And I really got it all learnt by watching your video two times ♥ Can't thank YOU enough Zach !!!

[@ej1civic95coupe]

The community is in dire need for board screen shots after lectures. Non the less, thank you so much and everyone at ninja nerd for these lectures. Such a blessing to the world.

[@NinjaNerdOfficial]

Those are available (pre and post whiteboard shots), in addition to lecture notes, to subscribers of the Ninja Nerd website ( www.ninjanerd.org )

[@DrBi-vh3ny]

You’re amazing. I simply love you ❤️

[@ashmithapadma9864]

Thank you so much. Finally I understood sympathetic and parasympathetic system well. It was always so confusing .... I really love you

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Thanks a lot , much better than my professors. I recommended your videos to all my friends ❤

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you have really made my study much easier

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I would like to thank God for he created u for us. U're funny and highly interesting teacher. Thank U

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Thank you.....you summarized it in an awesome way

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WOW!! Just WOW!! Thank you so much!!! You are like a human textbook.

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Thank you ninja nerd ( professor Zach) for clearing my concept ur videos are worth watching , helps me a lot .............. Ur hard work pays off sir 💜

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Thank you for helping me visualize the bigger picture better!

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You got a gift. You are an awesome teacher, thanks!

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ขอขอบคุณ

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One of Best teacher in my life

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This guy is God sent 🙏🏽 Be blessed 😊

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Amazing teacher 👌🏻 you are telling even the most difficult topics in a simple way 😍

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Thanks for getting me through anesthesia school guys! This is great stuff and always presented in a way that is more simple to understand. Appreciate what you do

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Send money

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I have wasted so many hours in classes and on books trying to get a hang of these sympathetic, parasympathetic and autonomic nervous system and still ending up with zero concepts about them. TODAY ALL THAT HAS CHANGED!

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Hahaha me too

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I finally understand nerves!!! Thank you, as always!

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thank you, one of the best pharmaco videos I have ever seen

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Thank you for your explanations! It's great to finally understand neurology.

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I LOVE THIS!!!!! I wish I found you sooner!!!! Thank you for this!!!!!!!!

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❤❤❤❤❤ thank you for the in-depth and clear lecture. May God bless you always.

[@himanshuambilkar4160]

Thoracolumbar outflow- T123 synapse with Superior cervical ganglion Internal carotid artery Carotid plexus NE. Eye- Dilator pupillae for vision Cilary MUSCLE relax accomodations. Salivary gland- Thick viscous mucous production Lacrimation-decrease. Middle cervical plexus- Heart- Cardiac plexus Cardiac output increase Oesophagus- Oesphageal plexus Decrease peristalsis. Lungs- Pulmonary plexus Vasoconstriction of bronchial ARTERY... T1-T5- splanchnic nerve. Celiac gangion- T5-T9 Greater splanchnic nerve Stomach Dec. peristalsis absorption Pyloric sphincter constrict Enterohastric reflex. Liver- Glycogenolysis Dec. Biliary tree contraction. Pancreas- Dec. Insulin production Inc. GLUCAGON. Spleen contract. Adrenal medulla- Chromaffin cells Intramural ganglion. Greater splanchnic nerve- Superior mesenteric ganglion Ascending colon Transverse 2/3 Rd Dec. Peristalsis absorption secretions. Lesser splanchnic nerve- T10-T11 Aortic renal ganglion Kidney ureter Decrease urine production... T12- Least splanchnic nerve chain ganglion diffused ganglion cells renal plexus.... Lumbar splanchnic nerve L123 Inferior mesenteric ganglion... T12L123 2 plexus Superior hypogastric plexus Intermesenteric plexus Internal urethral sphincter constrict. Alpha 1adrenergic receptor Detrusor MUSCLE-relax b1andb2 adrenergic receptor... Sacral splanchnic nerve- Inferior hypogastric plexus Gonads. Male-ejaculation. Female-uterine contractions.. Upper control- Hypothalamus Limbic nuclei Cortical control... Thank you sir

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Nice summary

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Thank God.....today only I needed this vedio...I searched before 5 days it's not there.....now I am safe......thanks a lot bro

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+manikanta kumar i'm so happy that we were able to help in your time of need!!

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I am greatly in debt to you Sir. Such a wonderful video Please do continue to be in this good work.

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The best illustration !!! Thank you sooo much

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Thanks for making and sharing!! so far the greatest lecture for me to understand A&P while in paramedicine school.

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superb teaching skills.God Bless you