from all the way in the middle east, precisely Jordan, I want to thank you with all my heart! you helped me through my second physiology exam and now tomorrow is the final one< thank you so much!
@alyaman818 жыл бұрын
here the same story 😂😂😂
@andrewm27864 жыл бұрын
"we have no way to control smooth muscle" *morning coffee has entered the chat*
@ginger42895 жыл бұрын
Unlike cardiac or skeletal muscle, smooth muscle is not striated because it does not consist of sarcomeres. Instead, a network of different filaments are found throughout the entire cell body and this helps the cell contract. The three types of filaments are thin filaments, thick filaments and intermediate filaments. Thin filaments are usually connected to regions called dense bodies while the thick filament is found in between thin filaments. The movement of the thick and thin filaments causes the dense bodies to move together, which in turn pulls on the intermediate filaments, which brings all the dense bodies inside the cell closer together. This ultimately causes the cell to shrink and this is known as the muscle contraction. Smooth muscles can be arranged into two ways. We have single-unit smooth muscle, also known as visceral smooth muscle and we also have multi-unit smooth muscle. Single-unit smooth muscles consist of a collection of different smooth muscle cells that are connected via gap junctions. Only a few of these muscles are actually innervated by a neuron. When a signal arrives at the innervated smooth muscle, the gap junctions cause the other cells to contract in a uniform fashion. Therefore, single-unit smooth muscles contract together, as a single unit. These smooth muscles are also capable of myogenic activity. Multi-unit smooth muscle consist of a bundle of smooth muscle cells that are all innervated by a neuron. This means that the contraction of a muscle in a multi-unit system is independent of the contract of some adjacent cell. Smooth muscles are control by the autonomic nervous system and are found in places like blood vessels, stomach, small intestine, uterus, bladder and many other places. Smooth muscles are uninucleated, which means that they have one nucleus per cell.
@maryam0000029 жыл бұрын
I don't know how but you always make things simpler and easier THANK YOU SO MUCH!!!
@AKLECTURES9 жыл бұрын
The Mariam Thanks! :)
@buckleyj44ify7 жыл бұрын
Thank you so much for your lectures, I study, read, re-watch my Professor's lecture and then defer to yours as back up and further foundation for my exams! I really appreciate your ability to clearly explain these extremely complex topics!!
@jeremieerikssonlefebvre26478 жыл бұрын
Thanks man, Ive watched a lot of lectures online. But I have to say you are a step ahead of all. You break it down very well and articulate everything nicely, which leaves no doubt for the viewer. Thanks again!
@james47277 жыл бұрын
You and the people over at crash course are the sole reason I am coping with a and p and bio xD thanks so much
@drastichaudhari6 жыл бұрын
Why are we paying the colleges? I should make my tuition payable to u!! Thanks for everything man!
@RohanKumar-nj6bb4 жыл бұрын
🤣🤣🤣🤣🤣🤣🤣🤣
@ranaabaidulrehman42865 жыл бұрын
You are making the topics easy for us👌🏻thank u for being so helpful for us. I really abhore the dislikers over here. Because these are the best presentations, even more than are delivered in our colleges 😊
@paulklink21295 жыл бұрын
Thank you for this video. It helped me out a bit.
@dinisridamayanti46822 жыл бұрын
thank you, your explanation is very clear. I want to ask permission to use this video to help my student understand the physiology of smooth muscle
@shelllyshelly4 жыл бұрын
Desmin and vimentin are found in all muscles, as they are part of the mesenchymal origin, that's the only correction I would make, other than that amazin. I like your videos!
@rasheedel-okka44272 жыл бұрын
to be more specific desmin and vimentin is found in in vascular smooth muscles while desmin is only found in other normal smooth muscle cells like intestine :)
@gal3049 жыл бұрын
you are great! greetings from an Israeli student
@AKLECTURES9 жыл бұрын
גל פ all the way from Israel! awesome! glad you liked the lecture! have a great one :)
@shuvo2658 жыл бұрын
best lecture i have ever seen
@hanifabdullah19923 жыл бұрын
Beautifully explained. So understandable and clear.
@guswiens15976 жыл бұрын
Thank you so much, it is so hard to find a video that explains well. Thank you
@user-vn3ss9ce5f4 жыл бұрын
الله يعطيك العافية خوية
@hamoteinelalelei51525 жыл бұрын
Thank you for this. Today is my test and man this helps alottt
@bikram053 жыл бұрын
Are you medico?
@maradelevingne60395 жыл бұрын
So passionate. Much more informative than how my professor in General Physiology explains his lectures T--T Please be our professor lol. Thanks for this vid!
@DapaChrons4 жыл бұрын
desmin and vimentin, in case anyone was wondering about the spelling
@luuchian20139 жыл бұрын
The best lecture I've listened to. Thank you for all the detailed information :)
@AKLECTURES9 жыл бұрын
chi an Luu Awesome to hear! You're welcome.
@syedtauha4001 Жыл бұрын
You're the FATHER OF SCIENCE
@mostafasalahel-din36835 жыл бұрын
Thank you very much for your great efforts
@marwafayez80637 жыл бұрын
very good lecture you make it easier thak you
@dikeledimonyepao7433 жыл бұрын
thank you so much...
@abdullahtown9 жыл бұрын
Fantastic explanation. Keep up the good work man
@AKLECTURES9 жыл бұрын
Dula K Thanks! Will do :-)
@emrekocoglu85467 жыл бұрын
So much police sirens in your videos, I heard them several times in different ones, what's rly happening there? :D
@tranphuongtrang95942 жыл бұрын
Hi. Why does a smooth muscle cell have only one nucleus?
@emilyvercammen26809 жыл бұрын
Very helpful! You have beautiful handwriting!!
@AKLECTURES9 жыл бұрын
Thanks Emily! :)
@trinityvong10372 жыл бұрын
YOU ARE A LEGENDDDD!!!!
@sciencenerd76393 жыл бұрын
very nice
@hayfaashamer82588 жыл бұрын
It is very good lecture , Thank you
@Poshgirl269 жыл бұрын
Thankyou for the video, and how does relaxation occur?
@carlosvasconcelos44639 жыл бұрын
Basically the amount of Ca+ is reduced. How? brack to ER or Out of the cell. Hope it helped :)
@carlosvasconcelos44639 жыл бұрын
Other way to achieve is also reducing P-Myosin
@drseanyarkoni52679 жыл бұрын
to be more specific, an enzyme called MLCP - myosine light chain phospatase induces the dissociation of myosine from actin.
@yuhgghuh40683 жыл бұрын
Why is smooth muscle not striated?
@kennyqueen78618 жыл бұрын
hi, thanks for this wonderful explanation. so after i got the fundamental knowledge from here, i went to read further on the cytoplasm membrane and its compose of the caveoli, can u pls explain its function. thanks
@Ing008 жыл бұрын
awesome video!!
@hendezzat34294 жыл бұрын
Amazing! ❤️
@farahalomar1253 жыл бұрын
Thanks❤️❤️❤️❤️
@Youkimilosa9 жыл бұрын
Hi, I got a question. On smooth muscle cell thin filaments, do we find actine, tropomyosine and troponine? Does Calcium intervene in the same way than in skeletal and cardiac muscles? As there are no sarcomere structure, I was wondering about the other differences that can be seen. Thanks again.
@amnamehmood76598 жыл бұрын
thanks a ton! From Pakistan ✌
@boobdu1104 жыл бұрын
at 3:35 you can hear a siren
@gorgeousgirl71668 жыл бұрын
can the single units of smooth muscles can be ether controlled by the NS or can b under the non nervous control ?
@kikibear1214610 ай бұрын
AMAZINGGG VIDEOO!!!!!
@itstanii_56496 жыл бұрын
"And what that means is..."
@Cass_i4 жыл бұрын
I think you mean : " And what that meeeaans is"
@isaactrujillo81199 жыл бұрын
good though, thanks for the info!
@muhammadrais67776 жыл бұрын
thanks bro keep it up
@ifrahhussein53445 жыл бұрын
Does the heart have smooth muscle ?
@EnsiklopediaAhmadFauzi9 жыл бұрын
waww,,,,, Thank U so much... U're cooll dude ... I am agree with @chi an luu
@AKLECTURES9 жыл бұрын
Fauzi Ahmad thanks! :)
@user-rb4rw5hr7h8 жыл бұрын
+AK LECTURES (Andrey K) thank you so much can you explain atrophy and hypertrophy of skeletal muscle please?
@danielc.61563 жыл бұрын
8:16 screenshot for notes :)
@AKLECTURES3 жыл бұрын
you can also just download them from my website :)
@girlgame19576 жыл бұрын
U are my degree saver😭
@sumayamozumder16549 жыл бұрын
Is that a siren?
@AKLECTURES9 жыл бұрын
Sumaya Mozumder Yes, I live by a hospital in the city :) very busy streets!
@Victormusicworld8 жыл бұрын
i love you. Can i order an AK lectures tshirt to romania? :D thx
@isaactrujillo81199 жыл бұрын
very fast
@jakeatherly52438 жыл бұрын
Can you really do this for a living with 27k views and staff? I mean I love your lectures, they are incredible, but how can you survive in this economy on KZfaq money?
@AKLECTURES8 жыл бұрын
I can't and I don't. I have yet to get a penny from KZfaq :)
@jakeatherly52438 жыл бұрын
+AK LECTURES (Andrey K) I have an enormous amount of respect for what you do. Thanks for the in depth lectures.
@RenZara288 жыл бұрын
Thank you for making our lives better huhu
@khaledha20503 жыл бұрын
💚💚🔥
@gorgeousgirl71668 жыл бұрын
can the single units of smooth muscles can be ether controlled by the NS or can b under the non nervous control ?
@DanielPena-nv2nj5 жыл бұрын
Yes - Smooth muscle can be controlled by a number of different stimuli, such as hormones (CCK, gastrin, histamine), pressure in blood vessels, stretching (very important!),changes in temperature, pH, O2 and CO2 levels.