ThomasConena

Brief explanation of the Countercurrent Multiplier System that occurs within the Nephron of the Kidneys.

Category:

Education

Tags:

• Nephron
• Kidneys

[dada42277]

I believe there is a mistake in this explanation of the countercurrent multiplier system. Due to the active transport of NaCl from the ascending limb of the Loop of Henle, the urine will actually become LESS concentrated as it ascends. It is in the medullary collecting ducts that the ultimate concentration of urine occurs (driven by water flowing out of the tubular lumen to the hyperosmolar interstitial fluid.

[Benz1o]

awesome explanation, really helped me understand the material!

Thank you!!

[amontazer]

ANATOMY HERE I COME WOOOOOOOOOOOOOO

[marnixzio]

use smartscreen dumbass

[hoylematt1]

Yeah there is some wrong information here. The primary concentration of urine occurs at the medullary collecting ducts, NOT the thick ascending loop of henle.

[08chrisandbec]

1:36 bawl of yaaan LOL...Great video

[mydas1]

The purpose of the loop of Henle is to create the high osmotic gradient in the medulla. Also, the purpose of the ascending limb being impermeable to water is to prevent water escaping with the sodium ions that are being reabsorbed.

[TheLaydeeNaee]

@MWMburton however small proteins do, which is then broken down into amino acids which diffuse into blood

[MWMburton]

Protiens do not enter the glomerulus unless the glomerulus is damaged.

[gunjan0808]

thanks. that helped a lot! but during the vid. a silly question striked my mind. why is the loop of henle a U shaped structure? it could be a coiled structure which would result in greater surface area. but anyways, thanks :)

[halmarilynsessions]

This is a vigorous but wrong explanation. The comments below are all correct. It is a great explanation of everything but the counter current mechanism. Also: protein does NOT filterat the glomerulus, unless you have glomerulonephritis, The osmolarity drops as you go back up the loop (in the tubule)

[imaballababy]

Whatever dada said is correct. The teacher here only got part of the mechanism right. Also he didnt explain how the Countercurrent mech. is built up