Urine Concentration and Dilution | Countercurrent Multiplication

#urine #urinetest #drnajeeb #medicines #pharmacology #medicaleducation #drnajeeblectures
Urine Concentration and Dilution | Countercurrent Multiplication
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(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.
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    1:10:12 difference between contercurrent multiplier and counter current exchanger system.

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  • @DoctorNajeeb

    @DoctorNajeeb

    3 жыл бұрын

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

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    Thanks Dr. Najeeb!

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  • @DoctorNajeeb

    @DoctorNajeeb

    Жыл бұрын

    Love you more dear❤️ Stay blessed ❤️

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    @physicongangulysg14762 жыл бұрын

    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. 💜💚❤️💛💙

  • @DoctorNajeeb

    @DoctorNajeeb

    2 жыл бұрын

    Most welcome!❤️ Stay blessed❤️

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

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

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    @rosaceae6748 Жыл бұрын

    Awesome lecture sir . Love from India 🇮🇳

  • @DoctorNajeeb

    @DoctorNajeeb

    Жыл бұрын

    Thanks for the love 💘

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  • @DoctorNajeeb

    @DoctorNajeeb

    2 жыл бұрын

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

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  • @DoctorNajeeb

    @DoctorNajeeb

    2 жыл бұрын

    Thank you so much. Stay blessed ❤️

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

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    excellent explanation

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

  • @DoctorNajeeb

    @DoctorNajeeb

    10 ай бұрын

    You are welcome❤️

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  • @DoctorNajeeb

    @DoctorNajeeb

    2 жыл бұрын

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

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    @himanishgoswami32352 ай бұрын

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

  • @DoctorNajeeb

    @DoctorNajeeb

    2 ай бұрын

    Glad to hear that 😊 Stay blessed ❤️

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    @minumohan60253 жыл бұрын

    What a nice presentation sir.

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    @nertev87314 жыл бұрын

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

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    @user-fh8zp5kl2k7 жыл бұрын

    thank you doctor

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    @goshegoshe31996 жыл бұрын

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

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    @neetbiologybyshivsir4521 Жыл бұрын

    Truly , You are THE GREAT GREAT GREAT teacher.

  • @DoctorNajeeb

    @DoctorNajeeb

    Жыл бұрын

    Thank you! ❤ Stay blessed ❤

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    @SanasBiochemistry4 жыл бұрын

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

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    @mehreenghouri43323 жыл бұрын

    lots of respect for you sir☺️🙏

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    @tishadevi11775 жыл бұрын

    fantastic explanation

  • @ronnielvictoria5617
    @ronnielvictoria56172 жыл бұрын

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

  • @DoctorNajeeb

    @DoctorNajeeb

    2 жыл бұрын

    You are most welcome. Stay blessed❤️

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    @suramsingh71274 жыл бұрын

    You are really a gem sir..

  • @masterdoctor7442
    @masterdoctor74425 жыл бұрын

    Amazing sir Thank u so much

  • @kmarvijay
    @kmarvijay3 жыл бұрын

    thanks Dr.Najeeb

  • @Akhter791
    @Akhter7916 жыл бұрын

    very talented teacher

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    @kimiaanvaripour10773 жыл бұрын

    Thank you soooo much ,you made my day🙏🙏

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    @asifkhanpathan415 жыл бұрын

    God gifted skills otherwise not possible

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    @sakshichaturvedi5704 Жыл бұрын

    Each and every second is totally worth 👍

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    @danielekwechi4350 Жыл бұрын

    World's Greatest alien teacher

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    @sheline1436 жыл бұрын

    very much helpful 😊😊

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    @dcbaabcd20634 жыл бұрын

    Sir you are simply superb 🙏, 🙏

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    @nrmlyaroy71353 жыл бұрын

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

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    @srirambhardwaj23435 жыл бұрын

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

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    @SonuYadav-pk5pd3 жыл бұрын

    Thank you sir it was really helpful😍😍😍

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    @peaceful.warrior3332 жыл бұрын

    I really thank Allah swt to have encountered such a great teacher. Made my med school journey sooo much fun and easy🤍

  • @DoctorNajeeb

    @DoctorNajeeb

    2 жыл бұрын

    Glad to hear that💖 Keep supporting💖

  • @rimplekour3882
    @rimplekour38823 жыл бұрын

    No one can replace u😊😊

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    @NoorFatima-jd6xm2 жыл бұрын

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

  • @DoctorNajeeb

    @DoctorNajeeb

    2 жыл бұрын

    Likewise! ❤️ Stay blessed ❤️

  • @NavinKumar-ht2kf
    @NavinKumar-ht2kf9 ай бұрын

    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 🎉🎉

  • @DoctorNajeeb

    @DoctorNajeeb

    9 ай бұрын

    It's my pleasure to have such great students. Thanks 💯

  • @NavinKumar-ht2kf

    @NavinKumar-ht2kf

    9 ай бұрын

    @@DoctorNajeeb ❤️

  • @ayeshasayyed8962
    @ayeshasayyed89622 жыл бұрын

    Its amazing Sir. You have cleared each and every concept.God bless you😊

  • @DoctorNajeeb

    @DoctorNajeeb

    2 жыл бұрын

    So nice of you. Stay blessed 😍😍

  • @santoshpachauri9464
    @santoshpachauri94644 жыл бұрын

    Amazing class...sir

  • @spiritualhealer7670
    @spiritualhealer76704 жыл бұрын

    Thank you very much sir .I am from India

  • @rfabhishekjha
    @rfabhishekjha5 жыл бұрын

    amazing video sir plss keep doing it

  • @srirambhardwaj2343
    @srirambhardwaj23435 жыл бұрын

    Excellent.explation.sir.

  • @proyankayadavyadav5505
    @proyankayadavyadav55056 жыл бұрын

    Thanku so much sir. .....

  • @sakshidang4733
    @sakshidang47336 жыл бұрын

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

  • @ayomkuot5580

    @ayomkuot5580

    3 жыл бұрын

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

  • @artofliving00
    @artofliving002 ай бұрын

    Hats off to you sir 🙌

  • @randomgirl679
    @randomgirl6794 жыл бұрын

    Me as a neet aspirant watching Dr. Najeeb's videos...... Omg 😱 are medical lecturers that simple

  • @___s___8071

    @___s___8071

    3 жыл бұрын

    I wish that were the case sweetie if you're in college rn you know how hard it is🙂

  • @TruthSeeker89
    @TruthSeeker89 Жыл бұрын

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

  • @DoctorNajeeb

    @DoctorNajeeb

    Жыл бұрын

    It's my pleasure❤️ Stay blessed❤️

  • @moments000
    @moments0005 жыл бұрын

    Thank u sir🤗🙏

  • @tumusiimeglobal
    @tumusiimeglobal6 жыл бұрын

    you are simply the best Dr

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