Mechanism of Vision

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  • Опубліковано 1 лют 2025
  • Rods & Cone
    Trans & Cis-Retinal,
    Temporal Retina & Nasal Retina,
    Bipolar Cells,
    Ganglion Cells,
    Geniculate Nucleus

КОМЕНТАРІ • 20

  • @shahidullah9879
    @shahidullah9879 4 роки тому +1

    Good job sir

  • @UmarKhan-nw9qv
    @UmarKhan-nw9qv 4 роки тому +1

    Thank you sir

  • @anwarsher1922
    @anwarsher1922 4 роки тому +1

    Thanks

  • @atiqurrahman0158
    @atiqurrahman0158 4 роки тому +1

    NICE SIR

  • @r2gaming949
    @r2gaming949 4 роки тому +1

    Thanks alot sir

  • @rahimshah0488
    @rahimshah0488 4 роки тому +1

    Nice sir

  • @baachainaam5020
    @baachainaam5020 3 роки тому

    Amazing Sir✨🙌

  • @SaddamHussain-in6ex
    @SaddamHussain-in6ex 4 роки тому +1

    Thanks sir

  • @سعیدافریدی
    @سعیدافریدی 4 роки тому +2

    Sir, as you tell us, rhodopsin should be converted into opsin and trans-retinal in case of rod cells. But what will happen to cone cells? When light falls on cone cells.

    • @drsajjadahmad3832
      @drsajjadahmad3832  4 роки тому +1

      As I have told in the "Functional Anatomy of Eye lecture" that three types of cones are there and each cone contain Cis-Retinal plus a protein {Iodopsin (Green), Porphyropsin (Red), Cyanopsin (Blue)}. So likewise, when light fall on the Blue cone, the Cis-retinal is converted to trans-retinal and the Cyanopsin is separated from retinal... and the same procedure for red and green cone... hope you get the answer

  • @sumaiyasoomro5063
    @sumaiyasoomro5063 4 роки тому +1

    Thankyou . This vedio is very helpful

    • @drsajjadahmad3832
      @drsajjadahmad3832  4 роки тому

      Very pleased to hear this.. Keep watching the upcoming videos

  • @سعیدافریدی
    @سعیدافریدی 4 роки тому +1

    Mashallah I got it very easily...but first of all I have to know the abbreviation of GCMP. Another question is that opsin the part of rohodopsin which is responsible for activation of enzyme but i have to know about the function of cis and trans retinal ... That how it perform sir!

    • @drsajjadahmad3832
      @drsajjadahmad3832  4 роки тому +1

      CGMP is Cyclic Guanosine Mono-Phosphate.... The Cis-Retinal & Trans-retinal are two isomers... The Cis-Retinal keep the Opsin with it.. when the light fall on Cis-Retinal it modify it's shape to Trans-retinal and Opsin is separated... So the function of Cis and Trans-retinal is to keep and detach Opsin again and again and maintain the cycle of vision

    • @سعیدافریدی
      @سعیدافریدی 4 роки тому +1

      @@drsajjadahmad3832 👍

  • @hamidwahab9593
    @hamidwahab9593 4 роки тому +1

    👍

  • @سعیدافریدی
    @سعیدافریدی 4 роки тому

    As you say, when there is less secretion of neurotransmitter than image, it will be formed easily... But sir neurotransmitter is responsible for the transmission of nerve impulse, but how it happens when there is less neurotransmitters?

    • @drsajjadahmad3832
      @drsajjadahmad3832  4 роки тому +1

      Hmmm you got it... Listen carefully... The Bipolar Cells are actually responsible for generation of action potential... But the Bipolar Cell can only generate action potential when it is not inhibited by the Rod or Cone.. So Rod or Cone continually secrete inhibitory neurotransmitters towards bipolar Cells when the eyes are closed... But when eyes are open the Rod or Cone get image reflection and can't inhibit the Bipolar Cell so the bipolar Cell make action potential and transfer image to the brain.. Hope you get it easily 😊

  • @shabbirahmad8676
    @shabbirahmad8676 4 роки тому +1

    Mta send k...

  • @khattaklifehacks05380
    @khattaklifehacks05380 4 роки тому +1

    Thanks sir