A2 Biology - Pacinian corpuscle (OCR A Chapter 13.3)

[@theoneh5249]

Short, sweet and simple. Thank you so much for this video, it was very useful. Keep up the great vids :)

[@param2402]

shes saving so many lives and grades thank you miss biorach you icon

[@lissie1181]

really coming clutch for my last minute revision tysm

[@HarveerSingh-rg5kn]

Thank you so much, a great concise video!!

[@MaryamMaryam-hf7vw]

thank you so much. can u pls make a video on how to plan for experiments?

[@STICKY_]

Thank you so much for this, it was very helpful. I really like your accent - where are you from? Also, please could you make videos where you go through past papers? Those are so helpful and I'm sure lots will appreciate it, especially since mocks are coming up. Have a brilliant day. Stay blessed!

[@yaboizak1210]

Great stuff!

[@user-zo7oq6ts5y]

thank you for this

[@allienoa9775]

Great explanation, thank you!

[@ja-ceelee8585]

Thank for the video

[@misastrejckova5389]

perfect video! Very helpful, thank you so much

[@gamehacker830]

Such a good video honestly

[@finnerz9200]

How does receptors and neurones all link together? Like how does the generated action potential in receptors eg pacinian corpuscle move along neurons since all the info I find seems to contradict itself.

[@BioRach]

So the spoon looking thing in my diagram IS the neurone itself - the receptor here defects pressure, so when pressure is applied, it literally stretches open the sodium ion channels, causing Na+ influx, inducing the action potential. Then the rest is how a normal neurone to work - Na+ ions diffuse along the cytoplasm towards the next node of Ranvier, causing that point to reach the threshold potential, which then opens up the voltage-gated sodium ion channels, causing ion influx, generating AP etc.... This continues as saltatory conduction in myelinated neurones, which is how AP is propagated. Hope this makes sense! You can check my other videos on the topic for more info :)

[@finnerz9200]

@ thank you for your help, great videos too🙂

[@Splugekrif]

Shouldn’t the sodium ions diffuse to reach equilibrium?

[@BioRach]

They may reach equilibrium (as is the case in any diffusion), but in this case they would use active transport to establish the concentration difference very soon after the influx, so there is essentially no time for it to reach equilibrium.

[@kench1]

so does this explain why very sharp objects hurt less

[@carrdinall]

may i ask for your hand in marriage...!!!

[@Diorfitzz]

ts weird

[@AJzilllaPro]

you gotta be kidding me haha

[@ibaadr17]

i love u

[@mardinjordan8642]

I think it would be helpful if you could write some thing down instead talking, it's making me continuously go back and remember what you say its time consuming

[@whatareyoudoininmyswamp7329]

she writes a summary paragraph at the end of the video