Urinary System, Part 1: Crash Course A&P #38


Even though you probably don’t choose to spend a lot of time thinking about it, your pee is kind of a big deal. Today we’re talking about the anatomy of your urinary system, and how your kidneys filter metabolic waste and balance salt and water concentrations in the blood. We’ll cover how nephrons use glomerular filtration, tubular reabsorption, and tubular secretion to reabsorb water and nutrients back into the blood, and make urine with the leftovers.

Anatomy of Hank poster:

Table of Contents
Kidneys Filter Metabolic Waste & Balance Salt & Water Concentrations in the Blood 1:25
Nephrons 4:13
Glomerular Filtration 4:37
Tublar Reabsorption 5:14
Tubular Secretion 8:17
Urine 8:40


Crash Course is on Patreon! You can support us directly by signing up at

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Fatima Iqbal, Penelope Flagg, Eugenia Karlson, Alex S, Jirat, Tim Curwick, Christy Huddleston, Eric Kitchen, Moritz Schmidt, Today I Found Out, Avi Yashchin, Chris Peters, Eric Knight, Jacob Ash, Simun Niclasen, Jan Schmid, Elliot Beter, Sandra Aft, SR Foxley, Ian Dundore, Daniel Baulig, Jason A Saslow, Robert Kunz, Jessica Wode, Steve Marshall, Anna-Ester Volozh, Christian, Caleb Weeks, Jeffrey Thompson, James Craver, and Markus Persson

Want to find Crash Course elsewhere on the internet?
Facebook –
Twitter –
Tumblr –
Support Crash Course on Patreon:

CC Kids:


Xem Thêm Bài Viết Khác:https://duancocobay.com/dau-tu


  1. I came back to this crash course after reading various books. Now it makes more sense to me. It's also a helpful reference for my teaching demo.

  2. no one will tell me how this system is connected to the digestive system. from the start where we drink water and other liquids …I get the digestive system but I'm still lost on how/where the liquids seperate and go into the urinary system

  3. I pavloved myself into feeling stressed and tired whenever the intro starts playing. The crash courses I watched in ×2 speed on my way to school have definitely left me something to remember for the rest of my life… not biology knowledge, that's for sure 😅

  4. Crash Course, I can’t thank you enough for making these videos. Anatomy and physiology are prerequisite classes for me and I don’t even know what I’d do without your videos. These videos give me a great basis on each topic we tackle and it helps immensely with understanding the basics. Thank you!

  5. This is university level ?????
    LOL! We in India study all this stuff and even some extra in the 11th grade itself :D:D:D:D:D:D

  6. its too fast.. -.- all your videos are too fast . very informative but hope you talk a little slower . Thank you for the video. helps me study with science

  7. You shared very good information. My uncle was suffering from this problem. He was very upset at that time. He went to Planet Ayurveda and started his treatment. Now he is fine. If you have this type of problem or any other type of health problem. You must go to Planet Ayurveda.

  8. I LOVE YOUR VIDEOS ! but pleaseeeee talk a little bit slower, that will make it much much easier to understand.. thanks a lot !

  9. First, I came here to learn about my kidneys, then I was fascinated by how fast a human can talk and then did he memorize all that information cause I didn't.

  10. Hey guys and ladies does any of you understand why the water from the ascending limp or whatever move out of the loop Henle into the medulla? Cos from the kidney structure I see the collecting duct isn't that the tube that moves urine into the pelvis I really do not understand pls help or better yet do a video on that part pls🙏


Please enter your comment!
Please enter your name here