Nervous system 1, Motor neuron

Basic structure and function of the nervous system. Often people gloss over the 'simple' stuff, and miss areas of important understanding. The main things are the plain things, and often, the plain things are the main things. Please draw your own diagram, rather that taking the short cut of freeze faming and screen capture.
Download my e books from campbellteaching.co.uk
Support the work of campbellteaching, at no cost whatsoever to yourself, if you use the link below as your bookmark to access Amazon. Thank you.
If in the US use this link goo.gl/mDMfj5
If in the UK use this link goo.gl/j0htQ5
Motor means to do with movement. When we decide we want to move part of the body a motor neurone in the brain will generate a new nerve impulse. The same neurone will then carry this impulse away from the brain towards a synapse with an other motor neurone which will then carry the impulse into the PNS.
A nerve impulse is electrical in nature and is generated in the cell body. This is an enlarged area of the cell which contains the nucleus and most of the cell organelles. From here the impulse travels away, along a fibre of the motor neurone called an axon. Any nerve fibre which carries information, in the form of an electrical nerve impulse, away from a cell body is defined as an axon.
There are also dendrites connected to the motor neurone cell body. A dendrite is defined as any nerve fibre which carries information towards a cell body. Typically a motor neurone consists of short dendrites conveying information towards the cell body and a longer axon carrying information away. Nerve fibres are essentially long thin projections of the cytoplasm. Despite being very thin, nerve fibres can be very long. For example, some motor neurone axons originate in the spinal cord and run the full length of the legs into the feet.
Because motor neurones initiate movement they often connect to skeletal muscles. When an axon approaches the muscle it supplies it divides into a number of smaller fibres which end in specialised structures called the synaptic end bulbs. These bulbs are responsible for conveying the impulse from the axon into the muscle. A muscle will only contract when it is stimulated to do so by the nerve impulse. As motor neurones carry impulses out from the CNS they are sometimes referred to as efferent neurones (remember ‘e’ for Efferent and for Exit).

[@yasminamin1893]

I am watching this video in 2020 while I am studying from home due to COVID-19. This video literally saved my life.

[@sophiebell5331]

Me too!
Helped me a lot.

[@rumaisahkhan4491]

Me too ❣️❣️

[@kisukeurahara5023]

Literally? Wowww

[@raviloi1383]

Me too

[@rohanp2194]

Me to from 2021

[@khansahib9309]

There is no word that can describe you! Thank you for giving us the concepts that we couldn't get from anyone..

[@emmafreeman9910]

I just wanted to thank you for all of your anatomy and physiology videos. I passed this semester and understood a lot more after watching your videos.

[@nadeemanwar7667]

thank you, Dr. Campbell your lectures are so helpful.

[@Campbellteaching]

You can now get all of the current videos and podcasts on a 64 Gig flash drive. About 420 video files and 100 podcasts. You can order one from campbellteaching.co.uk This saves ordering individual disks, its all on the one flashdrive. Best wishes, John

[@KarthikKarthik-db9zc]

Dr. John Campbell Sir ,I'm from India, how to get it sir? how much does it cost ?

[@Campbellteaching]

Hi Karthik, Im not sure how to do this, do you have any ideas?

[@KarthikKarthik-db9zc]

Dr. John Campbell thanks for replying so quickly.Im not sure sir.anyways first I will finish off all your UA-cam videos :)).

[@AnnMwangi-nb1xd]

Thank you doctor.your teaching saves my studies.@kenya

[@asterdaniel5124]

You are amazing, DOCTOR!! GOD BLESS YOU!!

[@healthyrootsholistic]

Dr Campbell thank you, I love your enthusiasm and passion for the subject, it is infectious. The way you pause after talking about a certain topic really shows how amazed you are about the human body. Thank you for sharing that same passion that we all appreciate as students!

[@AnnaKaumba-hl8xm]

❤

[@nj4jd]

You rule, Dr Campbell! I wish you were my A&P instructor. Thank you for allowing access to all of us; very generous! I sing the body electric!

[@user-tw6gh4bu8z]

Thank you sir for all the anatomy classes

[@nyimaceesay7343]

i looked for this topic's explanation for hours and then i saw you at the side and i am like "everything is under control now". you good. may allah guide you ,aamen

[@kahearne5361]

Wow. I have MS and never have I had the education by any family doctors OR neurologist that would be so helpful. I just saw another lecture on the digestive system and think I will further my understanding of our bodies and mine in particular :) Amazing gift you have and being stuck at home since Covid started, this will be another bright spot of opportunity! Thank you again Dr Campbell!

[@krishyams1626]

I love this guy! He explains everything so great! His cardiac video is really informative!

[@Noah-bb9dg]

Your underlining skill is unmatched

[@arinehshamirian3656]

Dr. Campbell you are a brilliant professor. Due to covid we have to basically home teaching and learning everything by ourselves but your videos saved my life. Thank you so much!

[@suzanaok6093]

Thank you so much Dr Campbel for a great explanation of Motor neurone, it did make my life easier! The upcoming Bioscience exam doesn't look scary anymore :)

[@annaterese7855]

Watching in 2024 for my Biomed exam - lifesaver - much clearer than my college lecture :-)

[@user-qk3kk8yr2y]

I am really grateful for his lectures. They are definitely fantastic.

[@dr.yuvarajanpalanisamy9805]

thank you very much for the simplistic and excellent presentation sir.
you are a gift to medical students....

[@debrabooth3945]

Fabulous for me to learn Advanced Pathophysiology as a graduate nurse practitioner! Thank you Dr. Campbell!

[@DrAlaaeldinCourses]

You are Amazing Dr. John .

[@hopebabitz5323]

Thank Dr. Campbell love your lectures!! I will be starting nursing in May. Studying all I can before it starts, I plan to listen to your lectures when I'm in school.

[@brucedanton3669]

Thank you Dr Campbell for your video; like all of them most well done too of course.

[@FranciscoHernandez-hf8no]

You are absolutely amazing! Thank you so much for taking the time to help us understand

[@kekothegeko]

Thank you for the video, it's really helpful when you explain the parts of the nerve like the hillock...being a hill, very helpful for memorizing all the parts of the nerve. Greatly appreciated.

[@studentaccount4354]

Love this. This is great for exams. Dr. Campbell, you’re the best. Grateful in the US.

[@alannahhouston4610]

Your videos are amazing Dr Campbell. Thank you for your help ❤️

[@shabnumrashid9966]

I honestly love your videos you make it so much easier to understand thank you so much for these videos

[@aaushichauhan1414]

thank you so much for teaching so nicely may you live long

[@LeULuong]

I appreciate your Video, Dr. Campbell. It helped me a lot for my exam!

[@vanessabarrera518]

First time I learn SO much, from such a CLEAR explanation. Thank you!!

[@sunahangrai9115]

thanks for english subtitle so clear language that he is teaching us english as well .

[@kingneri14]

Very good explanation on all of your videos, I really learn alot from them. Thank you for making these!

[@pepperstewart7854]

Dear Sir, your videos are THE BEST. Your calm voice and demeanour bring the knowledge across so well. These videos have enabled me to retain the information and to be able to recall when needed (exams). I am very grateful, thank you for sharing your knowledge in such a selfless way.

[@perfectlyinsane6308]

Thank you so much for providing so much knowledge for free.

[@BrendaBhuta]

Thank you Dr Campbell I really enjoy presentations

[@Cyndimansfield]

When Saint John goes on holidays we still have years of back log recordings to listen to. !

[@cristianmicu]

thank you for this. im a stroke survivor ( left side) watching to add to my knowledge and hopefully improve my motor function in the arm (and leg). subscribed.

[@mominayousif7168]

Thank you very much doctor , I love the way how you make the information very easy to understand . 💜✨

[@massagetherapyforinjuriesf8197]

Campbell is the best Doctor… you helped me like you do not know..

[@sadiazahoor845]

Thank you so much Dr Campbell for such a helpful lecture..

[@boyalinco180]

I really enjoy your style of teaching. very engaging

[@robertbanda7993]

I never had any challenge in anatomy and physiology back in college because of your teachings ❤❤

[@hudaa.j.8782]

Thanks a million, you are an amazing teacher 🌹

[@gabbyrogersnest751]

Thank you so much for making this easy to understand. ☺️

[@aafkssharaf1256]

Thank you so much dear doctor 🙏🙏 I like watching your lectures because they’re very informative and helpful. They’re made easy and detailed to almost all of what we need to know about a particular topic you are addressing. Thank you so much again and may the almighty bless you.

[@winnifridahmungomba2241]

Thank you Dr I really enjoy your presentations

[@krisdej6056]

Very clear and make my learning about neuron much easier. Thank you

[@benjaminbanda2045]

You are really great at what you do ,it's really helped me very much

[@kgaither7614]

Thank you for this presentation! You have helped me understand my class. Thanks for sharing you gift of teaching with the world!

[@erickmercado8023]

Thank you Dr. Campbell!!! Great explanation!!!!

[@apratimtewari4288]

thank you sir. you explain it easily and efficiently

[@cathy8828]

I love your teaching style and have shared your videos with my students for many years. Id love to be able to subscribe and pay for a channel with no ads. Thank you for sharing your knowledge.

[@ma.suzettefalcunitin5207]

Thanks Dr Campbell!

[@hillary7261]

Thank you. Very well done

[@beautymunyati7141]

You're very powerful sir you have really helped me a lot you really have a great passion for this field

[@charliespiano9893]

great video, i've learned so many fancy words for my biology gcse!!

[@masuulmedia7333]

I really appreciate your lectures thanks

[@ceciliawanjiru1636]

Well explained. Thanks Sir.😊

[@jagjeevandeshmukh2250]

Very good & easy way of explanation 🙏

[@kuudiergurimabel512]

Dr.John Campbell thanks u so much for your lesson.... Am also studying it because of covid-19..God bless u..u made everything so easy than in class...

[@BiologyOnTv]

Very nice descriptory lecture. Thanks...

[@drguutaalemedicallecture6066]

Excellent dr thanks

[@dg5580]

The first step to understanding pain in a certain area of the body is to learn the many internal systems that connect to the painful area. When you know how the body operates on the many levels of your bodily systems, you can begin to relate to the signals that you may personally NOT understand that YOU may be able to control more readily in your healing process.
Thanks Dr. Campbell for helping me with this part of my healing process!
Your friend...DEVEREE

[@japreet_kah]

Another good one John!

[@jamesmajok1434]

Merry Christmas comrade John my Doctor,very vivid and well elucidated lecture.

[@Campbellteaching]

And to you brother James, have a great new year.

[@lafonaaron]

Great style of teaching

[@octbrr3151]

best teacher ever!

[@laonemoegele803]

thanks to my teacher at home ur lectures really help

[@hidayatullah6740]

Great concept thanks....!

[@abugresabastian8473]

Good work.

[@learnwithcaliana10]

OMG. Thanks sooooo much. Great information!

[@widsonchibanga8326]

You are helping doctor am watching this in 2021 while studying from home because of covid-19 am from Zambia 🙏🙏❤

[@alwinaanam1231]

Sir thanku for such amazing video...

[@goldkhw]

I know all about these synapses just from reading. And I'm not in the health field at all but I was waiting for you to say "synapse." One of the Goon Show guys used to have terrible depression because he had no treatment years ago. Once the synapses shriveled and died they were gone forever and all the treatment in the world wouldn't help. Apparently, that is why it is very important to have treatment early on to prevent the synapses from dying.

[@justinaibe5080]

You are a born teacher

[@tfoxen7518]

Thank you, so very much! Simplicity in Excellence.
Guillain-Barre Syndrome (GBS) (and the variants), Chronic Inflammatory Demyelinating Polyneuropathy (CIDP), Multi Motor Neuropathy (MMN) are other considerations in peripheral demyelinating (often with cranial nerve involvement) autoimmune disorders.
I am thoroughly enjoying and learning from your videos, as come here due to the new coronaviris videos. Many thanks.

[@Campbellteaching]

Thats good, there are plenty to be going on with. Do let me know how you get on.

[@tfoxen7518]

@@Campbellteaching Thank you. I had GBS, support others with the neurological disorders I had mentioned, work (licensed massage therapy) with patients with pain and spinal disorders/injury, and love pathology and research as a personal interest. Later life path.
All the best to you and yours!

[@Sherirose1]

As usual thanks so much!!!

[@mwadjumamukamfizi2216]

Thanks a lot this was so helpful

[@xuanhangduong6825]

Thank you!

[@halimaalnaes2107]

Thank you so much Mr :)

[@valariemusilwa4512]

Learning alot here, from kenya❤❤

[@PAIKUN.]

thank you sir!

[@jond2955]

Thank you! So well explained :-)

[@denniskasaine5006]

I'm greatfull i have learned alot....

[@alimokdad1510]

great master

[@tiffanybedward453]

Thank you docki!

[@cannizaro4927]

Masterpiece 🎉🎉🎉❤❤

[@mingakinsgibayuxds7542]

Thank you doctor Campbell pour your work. I deeply appreciate it! Please make a video on Parkinson disease.
Nursing student from Switzerland

[@mukhitkazi]

good content

[@eternalpassionandwhatever7147]

wow very clear !

[@wondermucholo2067]

I'm watching this video in 2024... still very educative

[@omar-yz3im]

Thanks
following from Egypt

[@thelmachilufya8997]

Very helpful thank you

[@ranabeauty1748]

This vid help me so much I thought the motor neurone was herd but now it’s like drinking water thx doctor

[@shashimoghe3920]

Dr john Campbell sir your great humanitarian providing us sea of vital knowledge about our body anatomy may God bless you with sound health and joyful life thanks 08/07/2022

[@saacidsamakaab9997]

Thank you verymuch

[@yeygetup1577]

Thank you

[@rerimontgomery6272]

Thanks awesome very interesting

[@Jack_The_Loser_Loner]

Good video I would like to know what the blue dots are I must not have caught there names

[@geethuchandra5344]

Thank you so much sir....