MCAT Biology: Kidney Essentials

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Use this video to learn about the Kidney on the MCAT, including its functions of filtration, reabsorption, secretion, excretion, and blood pressure regulation. We zoom into the nephron where we look at the glomerulus, Loop of Henle, and the collecting duct. We also learn how the kidney is impacted by the endocrine system via aldosterone and ADH/vasopressin.
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0:00 Major Functions of the Kidney
1:16 Structure of the Kidney
2:18 Processes of the Nephron
2:46 Glomerulus
3:31 Bowman's Capsule
4:17 Proximal/Distal Convoluted Tubule
5:40 Sodium Potassium ATPase Transporter
9:14 Aldosterone
11:09 Loop of Henle and Collecting Ducts
15:50 Aquaporins
18:24 Excretion
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Kidney and nephron images were used from Biorender.com

Опубликовано:

4 июл 2024

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Комментарии : 39

@iZxpd 2 месяца назад

Everything we need to know about the nephron in less than 20 minutes. Thank you so much, learned so much from your video.

@bremmethod 2 месяца назад

I'm so glad you found it useful!

@09zboy 3 месяца назад

Your videos are saving me on my MCAT journey! Thank you so much!

@bremmethod 3 месяца назад

I'm so glad they're helping!

@gabrielbarton2424 20 дней назад

your smiling face and positive attitude really helped me retain the info. Testing tomorrow!

@bremmethod 20 дней назад

Good luck today!

@user-kx2sd2up9j 3 месяца назад

Wow, thank you so much for your videos! You explain it in such a articulate and succinct way.

@bremmethod 3 месяца назад

Thank you so much! I'm glad they're helping

@bangladeshivloggeradventures 3 месяца назад

Thank you. This is excellent.

@bremmethod 3 месяца назад

I'm glad you're finding it useful!

@cja12345 19 дней назад

wow, what an amazing explanation. I was doing the anki card and was straight memorizing without really understanding but now that I watched your video, I understand it fully.

@bremmethod 17 дней назад

I'm so happy to hear that! That's exactly why I make these

@ethanchrist5161 2 месяца назад

Best kidney video I have watched by far, thank you!

@bremmethod 2 месяца назад

I'm so glad you found it useful! You're welcome!

@rayvenhickman1894 2 месяца назад

Thank you! This video truly helped

@bremmethod 2 месяца назад

I'm so happy to hear that!

@dianapena8607 2 месяца назад

i love you thank you for this explanation!

@bremmethod 2 месяца назад

You're welcome! So glad you found it useful

@jessie3389 Месяц назад

SO UNDERRATED thank you so much!!

@bremmethod Месяц назад

You're welcome! So glad you found this useful!

@mominakhalid9152 3 месяца назад

Really helpful. Thank you

@bremmethod 3 месяца назад

I'm glad you found it helpful!

@faridshahid1833 Месяц назад

Thank you this was so helpful!!

@bremmethod Месяц назад

You're welcome!!

@graceforbes9139 Месяц назад

You are awesome!

@bremmethod Месяц назад

Thank you! So are you :)

@DSnowaws 2 месяца назад

The best kidney video I’ve seen. Please do more PPP glycolysis insulin connection stuff. If you had videos playlist on ur website I would insta purchase it as a resource

@bremmethod 2 месяца назад

I'm so happy that you enjoyed it, and I'll add that to the list! We're actually building a fully prerecorded course right now. I want it to be amazing so it should be ready early 2025!

@mikaylascott8254 15 дней назад

girl you ate that

@bremmethod 13 дней назад

Thank you!

@mcancemii 2 месяца назад

Thank you! Your videos have been so helpful

@bremmethod 2 месяца назад

Hi! Thanks for posting this - you are totally right. It's hard to depict aquaporins at the nephron level because they are so small - but they are just little channels in indivudal cell membranes! On the MCAT, you won't need to worry too much about identifying features on drawings, so as long as the concept of aquaporins makes sense, that's all you need in your notes! However, HistologyGuide is a super cool free resource where you can look at microscope images of all the different organs, including the nephron, and zoom in on the individual cells of the collecting duct! It's out of scope for MCAT but super cool for future doctors: histologyguide.com/slidebox/16-urinary-system.html#nephron

@AverageTennisGuy 7 дней назад

Loved the loop of henle connection with the collecting duct, it made it immensely easier to grasp this topic! Quick question though - if the concentration is increasing down as it shows, then how does the descending loop of henle contribute to that? If water comes out from descending, then shouldn't it decrease concentration? And then if sodium ions are being pumped out for ascending, doesn't concentration increase up as well because now we have more solute outside?

@AverageTennisGuy 7 дней назад

I think I better understand it now, would you mind letting me know if I got this correct? The thin loop of henle pasively diffuses water to concnetrate the filtrate,then the ascending loop actively sends the ions out. And the concentration is greatest at the bottom. This means the greatest active transport for increasing osmolarity of the interstitium is occurring at the very bottom and decreases as it is close to the cortex(?)

@bremmethod 2 дня назад

You've got it! and because of this, as fluid moves down the collecting duct, the interstituim has a higher solute concentration, allowing for passive osmotic movement of water out of the aquaporins :)

@akfresh12 2 месяца назад

Blown away by how great this video was. Na is reabsorbed and K is secreted in the DCT correct? Guessing there are other ions that are also involved here.

@bremmethod 2 месяца назад

Yes! Na+ and K+ are the most highly tested ions because their equilibriums are super important for our neural function (it's a great content connection to the action potential!). Cl-, H+, and HCO3- are also exchanged in the PCT and DCT.