You are soo good at explaining these things to me. Actually better than my teachers

this is insanely helpful

@BioRach

3 жыл бұрын

Glad you found it helpful! Thanks for watching :D

this is a rly helpful explanation! could you please do a video explaining the counter-current system and the adaptations of fish?

@nviscallin3702

Жыл бұрын

Yes i need this!!!

Thank you so much for your videos, I could never grasp the concept of some topics when I read from textbooks. You help visualise and explain it in simple steps. A life saver.

you are acc a saint ibr, i have my exam next week and this finally helped me understand this after more than a year of not rlly getting it tysm!!!!!

Thank you for making videos at this time🥰

@BioRach

4 жыл бұрын

Glad to be of help! Thanks for watching :)

Amazing! Great explanation - thanks!

Absolute Legend

Please keep making videos!!

thanks Rachel loved this video!!

Thanks for this!!!

Thank you very much

YOU ROCK THANK YOU

ur a godsend i love u

Thanks Queeeeeen.

Your vidoes are just like the best miss They're so good and has cleared almost all my problems i had in biology Please can you make videos on reproduction 🙏🙏

Lifesaver 😅❤

Can you do counter current etc?x

great video please please do one for the mammalian gas exchange if possible 🙂🙂 thanks!

@BioRach

Жыл бұрын

Yes that's on the list!

your videos are really helpful miss, could you also make videos on 7.2, 7.3 and 7.4 please? thank you

@BioRach

3 жыл бұрын

Eventually will do!

Great

you beauty !

I'm confused, I thought that the valves and the operculum was the same thing. And that the increase in pressure forces the operculum open which allows the water to then leave the gills.

@BioRach

3 жыл бұрын

Yeah you're right! Is that not what I said? 😂

When’s the counter current video 😪😪

I don't understand why the pressure decreases when the volume increases. (In chemistry if you decrease volume pressure increases as particles colliding will have higher frequency thus more exceeding the activation energy and vice versa) in biology I keep getting confused with the example of when you blow into a balloon (water inside cavity - volume increases) then the pressure should also increase? Just like the pressure in the balloon?

@BioRach

4 жыл бұрын

You're spot on with the pressure and volume bit (works the same in both Chem and Bio) in the sense when one increases the other decreases, while keeping in mind that it's a passive process! In breathing, you're changing the thorax volume by contracting/relaxing your intercostal muscles to lift/lower your ribcage, which then changes the pressure, then depending on the direction of the pressure gradient, air would then move in or out of your lungs as a result of it. On the other hand, blowing into a balloon is you forcing air into it, increasing its pressure, in which pushes against the walls, inflating the balloon (increasing its volume). But that's not how we breathe! We don't have air forced into our lungs (unless we have a medical condition where we couldn't breathe naturally by changing our thorax volume), so the balloon example cannot be used to explain how breathing works (unless they're balloons inside the bell jar model...!) Hope this clarifies it! :)

@TemtionzZ

4 жыл бұрын

​@@BioRach ​ Thank you so much for the clarification! It finally makes sense now, it didn't occur to me that exhaling into the balloon is forcing air into it, despite ourselves expiring hence why they don't both work the same. Keep up the great videos and take care!

Lol

@adityaiyer801

3 жыл бұрын

fax