Absorption in the Small Intestine 

Awesome videos! Since the Corona virus has shut down all schools in England, as a year 12 A level student we still have to study and learn in our own. These videos are perfect for learning from because they're really clear and efficient in explaining.

Just discovered your channel... and I finally get this. Thank you!

Great video! made this concept so much easier to understand. Greatly appreciated :)

Thank you so much ^-^ ive been confused on co-transport for ages and now i finally understand it !

This is so clear!!! Thank you for sharing.

ur actually a legend this has helped me SO much

Thankyou so much, I finally understand the topic for my presentation from your video.

I'm glad someone taught me this because I was just given a worksheet and expected to know what to do. Life saver!

This video is a re-upped version... In the previous video I had stated that the Na+/Glucose cotransporter was an example of active transport...which it isn't...no ATP required. Sorry for any confusion caused!

Thank you for explaining clearly!

Really helped, thank you!

Very well explained. Thank you!

wow! Thank you sooo much for this video!!!!! I really didn't understand this at all before but now it makes perfect sense!!!

wow you just cleared all my boubts.... thank you very much

Thank you very much! You saved my day

Thank you , very helpful!

Is there a difference between this video and the one with the same title that was deleted? Thank you!

your video was amazing thanks so much

Thanks bro, I get it now. So well explained

thanks dude, really helped summarize it for todays exam>:)

thank you so much!

OMG YOU are amazing thank you!!

Thank you!

Thank you very much

I completely understand now!!

THANK YOU!!

Thanks!

Very much helpful... Thank you

It was a good one.

thanks alot it's facilitated my study

great vid buddy

Thank you so much

Awesome 👏 😎

Thanx very easy to understand 🤠

Thanks for this video it has really helped. I was just wondering why is there a higher concentration of glucose in the outside of the lumen compared to inside the lumen? why is there a low --> high concentration gradient with glucose becasue surely there would be a lot of glucose in the inside of the lumen of the small intestine (due to the breakdown of foods) compared to the outside of the lumen?

hi sir, surely the active transport occurs before the cotransport? because wont the removal of sodium ions set up the concentration gradient, thus the sodium in the lumen will diffuse with the glucose molecule

very good explaination

thanksss so useful for me

Thankyou very useful

Hi MR. Pollock, I am a bit confused because my lecturer told us that Na+ are pumped back out of the epithelium cell by the Na+/K+ pump. It means that Na+ are bumped back to the lumen. However, in your video, Na+ are going in the bloodstream. Could you tell me more pleases?

Thanks

Thank you .... Very well explained

You are a god

Can you pls correct your Na-K pump segment to minimize confusion? Na gradient should be this: higher extracellularly, lower intracellularly. So that means for the Na-K ATPase, it actively transport 3 Na from inside to outside the cell, as well as 2 K from outside to inside the cell. This maintains the resting membrane potential. Thanks!

thanx

Thanks bro

this was sooo helpful thankyou!! I have a test on unit one tomorrow and it feels really good to finally understand this 😁

very helpful. a bsc nursing student🤗

God bless you. Ty so much. XD

Where does potassium go after?

Hi Mr Pollock,I'm struggling with unit 2 AS Biology. Need help with understanding the cell cycle, meiosis, mitosis and genetic variation with bacteria 😊please make videos?

thank you for that it was helpful but the sound is so low

EXAM TOMMOROWWW I LOVE YOU SO MUCH YOU ARE A GOD

where do the potassium ions go after the process ? do they accumulate in the epithelial cells of the small intestines ?

Isn't SYMPORTER a secondary transport, so an active transport.?

What about water transport from lumen into blood?

Hey, thanks for posting.. I'm not far enough along in my nutritionist certification to understand cotransports and the like, but I am working on trying to understand the roles of enterocytes and villi/micro-villi. Unfortunately the text I was given doesn't give me much in terms of visual aid to understand what it looks like and how it lines the small intestine and therefore how to understand it's function. The start of your video with the bisection of the intestine was so helpful. If you have a video that just discusses enterocytes and villi, would you be so kind as to post a link? Thanks again!

You say that Co transport is an example of passive transport, but isn’t it in fact secondary active transport? Sodium ions are translocated using ATP, and by co transport the glucose can be absorbed.

You said sodium moves actively in sodium potassium pump but you showed that sodium is moving into the blood stream from high concentration gradient to low concentration gradient which is basically facilitated diffusion, could please Make me less confused

😍

Thank you very much. I think Sound level is very low. Anyway thank you.

After digestion, during absorption isn't there more glucose in the lumen of intestin?

The voice is not clear but great contant

Sir volume is low😟

can u please make video on unit 5 essay questions

Yo lydia

You're a don

you are damn soft. i could barely hear anything??!