Rods and Cone cells: Photoreceptors in the human retina. A-level Biology Nervous System

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  • เผยแพร่เมื่อ 7 ก.ย. 2024

ความคิดเห็น • 35

  • @manavdivecha2097
    @manavdivecha2097 3 ปีที่แล้ว +97

    every school needs a Ms Estruch as their Biology teacher

  • @michaelNamikaze
    @michaelNamikaze 4 หลายเดือนก่อน +10

    It is crazy how this time 2 years ago, I watched your videos to get into medschool and now I still watch some of them for topics in medschool. 😆 Time flies fr

  • @Maria-vo2es
    @Maria-vo2es 3 ปีที่แล้ว +45

    You are the A Level version of Shaun from Freesciencelessons!!

  • @Softskills-hiddenPersonalPower
    @Softskills-hiddenPersonalPower 6 หลายเดือนก่อน +2

    A brilliant video. As a "Computer Scientist" with 50 years experience of the evolution of engineering involved in visual displays this is the first time I feel I have some kind of "Insight" into how the neural triggers connect to our thought paths and then, all being well, perceive color.
    Its a big deal these days when it comes to all the visual media like Film, Virtual Reality and TV screens.
    Your video provides an excellent link between Human Anatomy and Information Technology (IT). Thank you. Party on.

  • @gabrielmensah6113
    @gabrielmensah6113 ปีที่แล้ว +10

    YOU ARE A VERY GOOD TEACHER, I ENJOY WATCHING YOUR VIDEOS. KEEP IT UP

  • @pinkbunny6932
    @pinkbunny6932 3 ปีที่แล้ว +19

    Thank you so much for this video! Very concise and easy to understand :)

    • @MissEstruchBiology
      @MissEstruchBiology  3 ปีที่แล้ว +2

      You're welcome 😊 Really pleased it's helped with your learning.

  • @laurenm7832
    @laurenm7832 3 ปีที่แล้ว +6

    this video is acc amazing! Thank you so much! saving my mock grades :)) xx

    • @MissEstruchBiology
      @MissEstruchBiology  3 ปีที่แล้ว +2

      Thank you 😊 Good luck with your mocks!!! So glad it helped you.

  • @nadadiaa5968
    @nadadiaa5968 5 หลายเดือนก่อน +1

    Hello, great viedo! one question tho, whats the difference between spatial summation and convergence?

  • @sizzlekickers6503
    @sizzlekickers6503 2 ปีที่แล้ว

    amazing as always-saved my a levels

  • @tauceti8060
    @tauceti8060 3 ปีที่แล้ว +4

    Do come and rod cells go through mitosis and if so how are new connections to the bipolar cells are made?I find this really fascinating.

    • @MissEstruchBiology
      @MissEstruchBiology  3 ปีที่แล้ว +5

      Hello,
      Im not sure on this I'm afraid, but I do know that most cells that are part of the nervous system cannot replicate so perhaps that is the case for rods and cones and this is why you got blind if you damage the retina?

  • @samzyyx
    @samzyyx ปีที่แล้ว +1

    hi! thank you so much with this video, i've been self-learning bio over the summer so that i can get ahead on content so that i can focus year 13 on exam questions and your videos really help with stuff i'm confused on when the textbook doesn't explain information well :)
    i'm still confused at 4:40 as to why rod cells can only distinguish objects in black and white? is it because of the retinal convergence mentioned in the top paragraph?
    thank you for your help :)

    • @MissEstruchBiology
      @MissEstruchBiology  ปีที่แล้ว +1

      It's to do with the pigment it contains, it only detects light or dark, not color.
      So glad my videos have been helping you!!!

    • @samzyyx
      @samzyyx ปีที่แล้ว

      @@MissEstruchBiology thank you!

  • @alicewood3064
    @alicewood3064 2 ปีที่แล้ว

    thank you so much!!

  • @hanamostafa5268
    @hanamostafa5268 3 ปีที่แล้ว +1

    Thanks so much for the video, it was helpful :) I just have a question you said here 2:16 that generator potential is same as action potential isn't the generator potential is the same as the graded potential? cause I'm a bit confused now

    • @MissEstruchBiology
      @MissEstruchBiology  3 ปีที่แล้ว +3

      Hi,
      graded potentials aren't on the AQA specification, but they are different to action potentials.
      Graded potentials are changes in membrane potential that vary in size, as opposed to being all-or-none and occur in the dendrites

    • @hanamostafa5268
      @hanamostafa5268 3 ปีที่แล้ว +1

      @@MissEstruchBiology thanks

  • @ahmedxaziz2960
    @ahmedxaziz2960 11 หลายเดือนก่อน +1

    6:33 miss did an oppsy

  • @aaronrajimon312
    @aaronrajimon312 3 ปีที่แล้ว +1

    Are you suppose to know the different pigments ? btw great video

    • @MissEstruchBiology
      @MissEstruchBiology  3 ปีที่แล้ว +1

      Depends on your exam board's specification. For AQA you need to know the iodopsin and rhodopsin.

  • @PeterPete
    @PeterPete ปีที่แล้ว +1

    has anybody got any proof that rod and cone cells actually exist and that cone cells respond to red green and blue to enable us to see colour??

    • @MissEstruchBiology
      @MissEstruchBiology  ปีที่แล้ว

      yeah. lots of experiments have been conducted on this. Has even come up as application question in the exam before

    • @PeterPete
      @PeterPete ปีที่แล้ว

      @@MissEstruchBiology what are these experiments then?? Can you reference them so I can verify that what you say is true?

  • @galefray
    @galefray 2 ปีที่แล้ว

    💝

  • @ZAsym
    @ZAsym 3 ปีที่แล้ว +2

    phew still at it