Urine Concentration and Dilution | Countercurrent Multiplication

Sdílet
Vložit
  • čas přidán 21. 05. 2017
  • #urine #urinetest #drnajeeb #medicines #pharmacology #medicaleducation #drnajeeblectures
    Urine Concentration and Dilution | Countercurrent Multiplication
    Like this video? Sign up now on our website at www.DrNajeebLectures.com
    to access 800+ Exclusive videos on Basic Medical Sciences & Clinical Medicine. These are premium videos (NOT FROM CZcams). All these videos come with English subtitles & download options. Sign up now! Get Lifetime Access for a one-time payment of $99 ONLY!
    Sign up now on our website at members.drnajeeblectures.com/...
    ---------------------------------------------------------------------------------------------------------------------------
    Why sign up for premium membership? Here's why!
    Membership Features for premium website members.
    1. More than 800+ Medical Lectures.
    2. Basic Medical Sciences & Clinical Medicine.
    3. Mobile-friendly interface with android and iOS apps.
    4. English subtitles and new videos every week.
    5. Download option for offline video playback.
    6. Fanatic customer support and that's 24/7.
    7. Fast video playback option to learn faster.
    8. Trusted by over 2M+ students in 190 countries.
    ---------------------------------------------------------------------------------------------------------------------------
    (0:00-14:46)
    Concepts of Hypo- & Hyperosmolarity; understanding the purpose behind urine concentration and dilution by the kidney.
    (14:47-28:35)
    Mechanisms of concentration and dilution of urine:
    1-Medullary Interstitial Hyperosmolarity (MIH) [Cortico-Papillary Osmolar Gradient]; outline of its mechanism of production and maintenance.
    2-Role of ADH as the second mechanism of concentration & dilution of urine.
    (28:36-54:50)
    Mechanisms of concentration and dilution of urine continued:
    1-Development of Medullary Interstitial Hyperosmolarity (MIH); Counter Current Multiplication Mechanism.
    (54:51-1:03:26)
    Development of MIH continued; Urea Recycling in Renal Medulla.
    (1:03:27-1:10:47)
    Maintenance of Medullary Interstitial Hyperosmolarity (MIH); Vasa Recta's Counter Current Exchange Mechanism/System.
    Comparison of Counter Current Multiplier & Counter Current Exchanger System.
    (1:10:50-1:28:55)
    Mechanisms of concentration & dilution of urine continued:
    2-Role of Anti Diuretic Hormone (ADH); enhancing water permeability in last part of nephron.
    (1:28:56-1:47:40)
    Recapping the concept of concentration & dilution of urine with the help of an example of a person's thirst and water intake in differing environments; emphasis on effects of ADH on the nephron.
    (1:47:41-1:57:57)
    Explanation of "Ratio of Tubular Fluid Osmolarity (TF) to Plasma Osmolarity (Posm)" at different points along the nephron; emphasis on the role of ADH.
    ---------------------------------------------------------------------------------------------------------------------------
    Join this channel to get access to perks:
    Sign up now on our website at members.drnajeeblectures.com/...
    / @doctornajeeb
    Follow us on Facebook :- / drnajeeb
    Follow us on Instagram :- / drnajeeblectures

Komentáře • 294

  • @DoctorNajeeb
    @DoctorNajeeb  Před 5 lety +63

    Please note this is just a teaser video. Complete lecture is available in member's area at www.DrNajeebLectures.com. Access over 800+ videos on Basic Medical Sciences & Clinical Medicine + New videos every week with download option.
    ────────────────
    WHY SIGN UP FOR MEMBERSHIP?
    ────────────────
    ► 800+ Medical Lectures.
    ► Basic Medical Sciences.
    ► Clinical Medicine.
    ► New videos every week in HD.
    ► Download videos for offline access.
    ► Fast video playback (0.5x - 2x)
    ► Watch videos on any device.
    ► Fanatic customer support.
    ► Trusted by 1 million students.
    Learn more at www.DrNajeebLectures.com

  • @niravnayak30
    @niravnayak30 Před 5 lety +96

    Sir,without you I couldn’t become a medical student....and world will take many years to produce such a great teacher like you......thanks to being there for us....

  • @chandlerfriends7657
    @chandlerfriends7657 Před 4 lety +190

    I wish we are taught same way in medical colleges too. Best teaching skills sir. I think board and marker teaching is far better than this multimedia slides reading method...excellent lecture 😃

    • @fauzyaamissah3389
      @fauzyaamissah3389 Před 4 lety +1

      I tell you 😂😂😂

    • @DoctorNajeeb
      @DoctorNajeeb  Před 3 lety +27

      Thank you for your love and support. :) May you be blessed with knowledge, prosperity, love and happiness, always. We wish you success and happiness in every walk of life and good luck in your future endeavors. Regards, Dr. Najeeb Team

    • @Pk2018-d2h
      @Pk2018-d2h Před 2 lety

      Well said , it reflect the intensity of engagement , emotion , creativity, spontaneity , up to the situation .....

    • @tseringdolker9827
      @tseringdolker9827 Před rokem

      @@DoctorNajeeb can c VV qq

    • @anjalikrishna9207
      @anjalikrishna9207 Před rokem

      True

  • @niravnayak30
    @niravnayak30 Před 5 lety +40

    You have saved many students carrier........i m one of them...🤗🤗

  • @Mollythom94
    @Mollythom94 Před 5 lety +19

    You explained this in one 2 hour lecture better than my instructor did in 3 class periods. I am so glad I found your page.

  • @iwant1dbacc842
    @iwant1dbacc842 Před 2 lety +14

    In this lockdown era where most of the offline institutions are closed you came as a blessing in my life sir 😭 literally watched 9 videos but still couldn't gain full control over this topic ...but after watching this 120 min video ... I'm much confident of this topic...thank u sir 🙏🏼😭

    • @DoctorNajeeb
      @DoctorNajeeb  Před 2 lety +18

      It really pushes me to work hard and I'll try my best to make lectures more meaningful and easy to understand for my beloved students. Thank you so much for your love and support. ❤️

  • @kanwaldhillon3669
    @kanwaldhillon3669 Před 5 lety +35

    Dear sir... with a heart full of respect I must say that u are an epitome of knowledge....and I feel blessed to have come across you and your lectures....hats off to you sir...regards...😊

  • @ufcurdu7862
    @ufcurdu7862 Před 2 lety +9

    😂 no one ever appreciated the camera man hr manages it so well, really want to thank him too🥰 thank you so much Dr najeeb sir

    • @DoctorNajeeb
      @DoctorNajeeb  Před 2 lety +3

      Thank you so much. Stay blessed ❤️❤️

  • @bleronao918
    @bleronao918 Před 4 lety +33

    You’re God’s gift to medical students sir. I hope you know how much respect and grattitude we feel for you. Greetings from Kosovo❤️

    • @DoctorNajeeb
      @DoctorNajeeb  Před 3 lety +5

      Thank you for your love and support. :) May you be blessed with knowledge, prosperity, love and happiness, always. We wish you success and happiness in every walk of life and good luck in your future endeavors. Regards, Dr. Najeeb Team

  • @neershah4467
    @neershah4467 Před rokem +6

    1:10:12 difference between contercurrent multiplier and counter current exchanger system.

  • @snivellus15814
    @snivellus15814 Před 3 lety +9

    I can’t thank you enough sir for making counter-current mechanism this easy and convenient. I am going to appear in my 1st professional examination and understood this for the first time. Thank you again

  • @dezangwangchuk8756
    @dezangwangchuk8756 Před 3 lety +5

    Erudite explanation. Love from Bhutan. I am a vet Doctor. Thank you for making it crystal clear. Allah bless you always 🙏🙏🙏

  • @yuktikataria7486
    @yuktikataria7486 Před 4 lety +4

    His way of teaching is dressed with consummate elegance. Madly in love with the beauty with which our body works ,only because of your sir. Thankyou.

  • @abinashkumararakha673
    @abinashkumararakha673 Před 3 lety +7

    SIR YOU HAVE CONTRIBUTED A LOT TO MY MEDICAL SCIENCE KNOWLEDGE. THANK YOU SIR AND LOTS OF LOVE FROM ME .

  • @AbdulRehman-ur5wg
    @AbdulRehman-ur5wg Před 2 lety +4

    I have read this topic 3times from book i didn't understand this topic.
    But from this vid i have understand this topic first time.
    Thank you so much sir❤

    • @DoctorNajeeb
      @DoctorNajeeb  Před 2 lety +1

      Glad you found my lectures easy to understand! Stay tuned ❤️

  • @Mblmsl
    @Mblmsl Před 6 lety +14

    I love your explanations! You make school a lot easier! Wish you posted all videos on youtube!

  • @b-techgaming3918
    @b-techgaming3918 Před 11 měsíci +3

    We usually have 1 hour classes at our college and trust me we get tired listening the whole class there. I dont know how but this 2 hours video never felt that way. What a great teacher you are sir!! Fallen In love with the way you teach. A big thank you❤❤

    • @DoctorNajeeb
      @DoctorNajeeb  Před 11 měsíci

      Thank you so much for your love. Keep watching !!!

  • @SonaliDas-qq2oi
    @SonaliDas-qq2oi Před 3 lety +10

    I understood this mechanism for the first time in my life.. thank you so much sir..take lots of love ❤️

    • @DoctorNajeeb
      @DoctorNajeeb  Před 3 lety +3

      You are most welcome. Hope this helped you. Stay blessed. ✨✨

  • @srikantadash4603
    @srikantadash4603 Před 3 lety +2

    Sir... I bow down on ur feet.... If I say I have seen God it is you... The way u explain and give example from day to day life and explaining is very down to earth manner... This work can only be done by Dr Sayd Nazeeb Sir❤🧡💛💚💙💜🤍🤎.... I have completed this video in 3 days by making notes.my teacher gave me an assignment on this topic but i have no idea even what is counter current I don't even know.... But i promice my self that i will see ur video first then I'll write my assignment and it took me 3 days.. Then I read tortora.... By mingling both notes.. I write in fair copy and I submitted LATE.. but i m very happy. I cant estimate my happiness..
    Truely speaking .if I would have power of God I will enhance u to live more then 1000 years.... Take my lifetime too.
    Last but not the least... Say hii to that boy azim😂. He was giving a constipation smile but he is good boy 😁😆.i wish I could sit there and hear ur lecs... But anyway I'll meet u for sure in Pakistan 🇵🇰 1 day for sure...
    I am grateful for your existence. I love ❤😘 you sir.m not a medical student but a biochemist.

  • @ayurvedas6742
    @ayurvedas6742 Před rokem +3

    Sir my daughter is studying in 12 th standard. Your lectures are very helpful to clear the concepts. Thank you so much🙏

  • @gg038
    @gg038 Před 2 lety +5

    I love you dr Najeeb!!! No one has ever helped me in understanding my Physio more than you. I respect your talent and passion in teaching. I hope that the Lord will bless you so much because you are such a blessing to all of us students! 💝💓🙏🏽

  • @roronoazoro3204
    @roronoazoro3204 Před 2 lety +5

    dr najeeb was the reasom to make me like medicine again and since ive been watching urinary systems videos i like to be a nephrologist

    • @DoctorNajeeb
      @DoctorNajeeb  Před 2 lety +1

      Thank you for all the kind words💓 Keep supporting💓

  • @xyz5295
    @xyz5295 Před 3 lety +5

    Now i really know what is the function of vasa recta.. Thank u sir👍🏻

  • @anatomylearning3199
    @anatomylearning3199 Před 3 lety +3

    Surely I didn't waste my 1:57 minutes .. it's blessings to have teacher like u✝️❤️ GOD bless you

  • @faisalrashid1844
    @faisalrashid1844 Před 5 lety +3

    Really helpful
    Thank you Dr. Najeeb sir....
    So easy to understand like having a cup of tea

  • @lakshyamanchanda1119
    @lakshyamanchanda1119 Před 3 lety +16

    the way camera kept zooming at that guy lol

  • @hareemilyas3247
    @hareemilyas3247 Před 3 lety +2

    Oh man! I am impressed i had no idea tht ccm could be so much fun...Dr Najeeb u r the man sir

  • @studypediatrics7257
    @studypediatrics7257 Před 4 lety +1

    love the way you make things clear .........thank you sir for building our concepts !!

  • @TanveerKhan-yj6dr
    @TanveerKhan-yj6dr Před 3 lety +2

    You are the best medical teacher sir
    Great respect for you
    May Allah bless you with health happiness and success

  • @jasiaali9524
    @jasiaali9524 Před 5 lety +3

    Dr.Najeeb I love u❤. You are a real real teacher the best teacher

  • @vishaly474
    @vishaly474 Před 3 lety +3

    Thanks sir 👍😊 with a lots of love ❤️ and support ❤️🙏

  • @abo8reeb600
    @abo8reeb600 Před rokem +2

    I wish i knew you since my first day in medical school
    Thank you sir

  • @dandam1920
    @dandam1920 Před 3 lety +2

    How can you know just EVERYTHING mashAllah 👏🏻👏🏻

  • @dibyanshishrivastava1178
    @dibyanshishrivastava1178 Před 3 lety +1

    Sir thanks alot sir the way of teaching it made me mesmerized each single word of yours got stuck into my memory. Thanks is also a very small word to appreciate you sir.

  • @nidhikashyap4460
    @nidhikashyap4460 Před 5 lety +4

    Thank you so much what an awesome lecture... I understood so well..

  • @ranendas4411
    @ranendas4411 Před 2 lety +1

    Dr. Najeeb is extremely knowledgeable & amazing convincing capacity to teach students of any level. Hat's off to Dr. Najeeb.

  • @sivaranjani2921
    @sivaranjani2921 Před 4 lety +1

    You are girf of God to explain us difficult topics very easily and Crystal clearly sir. Thank you very much sir..

  • @thomasdaniel1852
    @thomasdaniel1852 Před 5 lety +2

    Classes are highly informative.Thankyou very much, sir.

  • @ravaliyavajashi6682
    @ravaliyavajashi6682 Před 3 lety +3

    Sir you are not a teacher of physiology..you are such a god of physiology 🔥🔥🔥🔥🙏🙏🙏

  • @algorithmofphysio
    @algorithmofphysio Před 2 lety +5

    Platinum, Gold, Diamond quality lecture, Just amazing and absolutely superb concept of Counter current mechanism. Easy and Crisp knowledge. Thank you so much Sir, love You a lot. 💜💚❤️💛💙

  • @subhadarsansahoo45
    @subhadarsansahoo45 Před rokem +2

    One of best teacher the world has ever produced.......lots of love from india sir ❤️❤️❤️

    • @DoctorNajeeb
      @DoctorNajeeb  Před rokem

      Thank you for all the love and respect dear️❤️❤️

  • @dickensochieng3256
    @dickensochieng3256 Před rokem +3

    Best lecture of all times, I salute you Dr.... all the way from Nairobi Kenya

    • @DoctorNajeeb
      @DoctorNajeeb  Před rokem

      Thank you for your kind words❤ Keep supporting ❤

  • @SanasBiochemistry
    @SanasBiochemistry Před 4 lety +2

    DR NAJEEB IS JUST AWESOME!!!!!!!!!!!!!!!!!!!

  • @user-vc9cc1my5w
    @user-vc9cc1my5w Před 4 lety +1

    you well done thanks doctor fifth stage pharmacy student from Iraq

  • @niteshdubey6265
    @niteshdubey6265 Před 4 lety +1

    Thanks a lot sir, Without you i could never understand this topic

  • @sumayarimi6320
    @sumayarimi6320 Před 3 lety +5

    Tomorrow is my Physiology 1st professional exam.Now I am here.I have watched the video before as well.But I have came here for my revision.Thank you so much sir.

  • @muskansingh7372
    @muskansingh7372 Před 3 lety +4

    I studied counter current system earlier also but never understand that
    Today im feeling nice after seeing video and clearing my basic doubt and misconceptions also which i understood wrong earlier
    Thank u sir 😘😘😘😘😘

    • @DoctorNajeeb
      @DoctorNajeeb  Před 3 lety

      Thank you for your love and support. Stay blessed. :)

  • @nertev8731
    @nertev8731 Před 4 lety +2

    Thank you so much sir you made tough subject simple and lovable

  • @milicao28
    @milicao28 Před 11 měsíci +2

    THANK YOU SO MUCH DR. NAJEEB. GOD BLESS YOU.

  • @arnabkumar7912
    @arnabkumar7912 Před 6 lety +2

    Sir l became your fan, please continually help us like this way

  • @ronnielvictoria5617
    @ronnielvictoria5617 Před 2 lety +8

    Thank you so much Sir for this very high-yield lecture! More power to you!

    • @DoctorNajeeb
      @DoctorNajeeb  Před 2 lety +1

      You are most welcome. Stay blessed❤️

  • @Akhter791
    @Akhter791 Před 6 lety +2

    very talented teacher

  • @anushkajain2715
    @anushkajain2715 Před 6 lety +5

    awesome sir'..love from India

  • @NavinKumar-ht2kf
    @NavinKumar-ht2kf Před 10 měsíci +1

    Sir really thank you for your lecture iam an veterinary students your explanation was very good for my exams and also your explanation on rodents was very nice iam glad to watch this video sir 🎉🎉

  • @yawarali4246
    @yawarali4246 Před 2 lety +2

    Jazakallah sir....... EAST OR WEST DR. NAJEEB IS THE BEST❤❤❤❤❤❤

    • @DoctorNajeeb
      @DoctorNajeeb  Před 2 lety

      Thank you for the compliment! Keep learning and stay blessed ❤️

  • @user-fh8zp5kl2k
    @user-fh8zp5kl2k Před 7 lety +3

    thank you doctor

  • @mehreenghouri4332
    @mehreenghouri4332 Před 4 lety +2

    lots of respect for you sir☺️🙏

  • @afaqahmed6394
    @afaqahmed6394 Před 5 lety +1

    Great sir najeeb...pride of KEMU😍😘

  • @sakshichaturvedi5704
    @sakshichaturvedi5704 Před rokem +1

    Each and every second is totally worth 👍

  • @kimiaanvaripour1077
    @kimiaanvaripour1077 Před 3 lety +2

    Thank you soooo much ,you made my day🙏🙏

  • @suryateja4873
    @suryateja4873 Před 4 lety +1

    Truly awesome najeeb sir! You are a gem

  • @nrmlyaroy7135
    @nrmlyaroy7135 Před 3 lety +3

    Really wonderful lecture ❤️❤️❤️🔥🙏👍❤️❤️❤️

  • @NoorFatima-jd6xm
    @NoorFatima-jd6xm Před 2 lety +2

    Sir you're a blessing for all medical students May God bless you

  • @sanjaylukney
    @sanjaylukney Před 6 lety +2

    excellent explanation

  • @minumohan6025
    @minumohan6025 Před 3 lety +2

    What a nice presentation sir.

  • @neetbiologybyshivsir4521

    Truly , You are THE GREAT GREAT GREAT teacher.

  • @rohannarang4057
    @rohannarang4057 Před 6 lety +3

    u r just awesome hats off to you

  • @rosaceae6748
    @rosaceae6748 Před rokem +2

    Awesome lecture sir . Love from India 🇮🇳

  • @asmanoor6212
    @asmanoor6212 Před 6 měsíci

    In medical colleges they use to read slides while giving lecture...but you are great, you teach with your skills. I really appreciated your efforts, thank yoh so much❤

  • @suramsingh7127
    @suramsingh7127 Před 4 lety +1

    You are really a gem sir..

  • @sakshidang4733
    @sakshidang4733 Před 6 lety +4

    thankyou sir u make things so easy and reduce our efforts thanku very much

    • @ayomkuot5580
      @ayomkuot5580 Před 3 lety

      Mr. Dear teacher could you do respiratory semiology as well as endocrine semiology..... Thanks and answer me, you are gifted.

  • @rimplekour3882
    @rimplekour3882 Před 3 lety +2

    No one can replace u😊😊

  • @lukkaraghavendrarao
    @lukkaraghavendrarao Před rokem +2

    King 👑 of physiology love you sir

    • @DoctorNajeeb
      @DoctorNajeeb  Před rokem

      Love you more dear❤️ Stay blessed ❤️

  • @himanishgoswami3235
    @himanishgoswami3235 Před 4 měsíci

    I am a final year Nephrology resident, and I cannot tell you how much this helps.

    • @DoctorNajeeb
      @DoctorNajeeb  Před 4 měsíci

      Glad to hear that 😊 Stay blessed ❤️

  • @asifkhanpathan41
    @asifkhanpathan41 Před 5 lety +1

    God gifted skills otherwise not possible

  • @Shiraz687
    @Shiraz687 Před 6 lety +3

    Thanks

  • @devinsoelberg5684
    @devinsoelberg5684 Před 6 lety +2

    Thanks Dr. Najeeb!

  • @tishadevi1177
    @tishadevi1177 Před 5 lety +1

    fantastic explanation

  • @jyotsanamrinal4914
    @jyotsanamrinal4914 Před 4 lety +8

    Sir what to say! Understood counter current mechanism for the first time!!! It's quite weird to say but i am getting goosebumps 😅

    • @DoctorNajeeb
      @DoctorNajeeb  Před 3 lety +1

      Thank you for your feedback. Keep supporting the hard work. ❤️🔥

  • @proyankayadavyadav5505
    @proyankayadavyadav5505 Před 6 lety +3

    Thanku so much sir. .....

  • @dcbaabcd2063
    @dcbaabcd2063 Před 4 lety +2

    Sir you are simply superb 🙏, 🙏

  • @SonuYadav-pk5pd
    @SonuYadav-pk5pd Před 3 lety +1

    Thank you sir it was really helpful😍😍😍

  • @srirambhardwaj2343
    @srirambhardwaj2343 Před 5 lety +1

    Sir.your.lecture.is.very.informative.

  • @masterdoctor7442
    @masterdoctor7442 Před 5 lety +1

    Amazing sir
    Thank u so much

  • @mariammohammed7315
    @mariammohammed7315 Před 5 lety +1

    Thank you so much

  • @sheline143
    @sheline143 Před 6 lety +1

    very much helpful 😊😊

  • @moments000
    @moments000 Před 5 lety +2

    Thank u sir🤗🙏

  • @spiritualhealer7670
    @spiritualhealer7670 Před 4 lety +1

    Thank you very much sir .I am from India

  • @rashidhussain2632
    @rashidhussain2632 Před rokem +1

    Excellent.outsatanding

  • @POOJAKumari-qm9bi
    @POOJAKumari-qm9bi Před 5 lety +1

    you are the best sir

  • @souravramgharia2583
    @souravramgharia2583 Před 2 lety +1

    After seeing this video my mcq score and concept increase understanding thanku so much

    • @DoctorNajeeb
      @DoctorNajeeb  Před 2 lety

      Love it when students like yourself value my lectures and it really make me happy! ❤️

  • @TruthSeeker89
    @TruthSeeker89 Před rokem +2

    along with knowledge, he teaches how to teach....thank you sir for making me good teacher

  • @srirambhardwaj2343
    @srirambhardwaj2343 Před 5 lety +2

    Excellent.explation.sir.

  • @santoshpachauri9464
    @santoshpachauri9464 Před 4 lety +1

    Amazing class...sir

  • @tamimadnan7048
    @tamimadnan7048 Před 3 lety +1

    Huge respect sirr

  • @goshegoshe3199
    @goshegoshe3199 Před 7 lety +1

    Thanks for such an detailed and perfect teaching great piece of work please upload lecture on anatomy of kidney

  • @ghazalanoor8536
    @ghazalanoor8536 Před 4 lety +2

    Wonderful teacher. I salute you.

  • @omisah827
    @omisah827 Před 5 lety +1

    Thanks Sir🙏

  • @Nursinglectureswithimtiazafrid

    GREAT TEACHER OF THE WORLD

  • @farhazeenat1850
    @farhazeenat1850 Před 6 lety +2

    thanks sir