Скачать или смотреть Kidneys Part 5 - Countercurrent Multiplication in the Loop of Henle

This lecture starts by introducing the anatomy of the kidney with relationship to the loop of Henle and the osmolarity of the interstitial fluid of the renal pyramids. It then discusses how the descending loop is permeable to water while the ascending loop transports chloride and sodium out. Next it explains the different steps that are involved in creating the medullary osmotic gradient.

0:00 Introduction - Osmolarity of Renal Pyramid
6:00 Descending Loop - Water Permeability
9:30 Ascending Loop - Na+ and Cl- Transport
12:46 Step 1 - Na+ and Cl- Transport out of the Ascending Loop
20:49 Step 2 - Water Transport out of Descending Loop
28:36 Step 3 - Na+ and Cl- Transport out of the Ascending Loop
41:40 Step 4 - Water Transport out of the Descending Loop
51:30 Step 5 - Cycle Continuously Repeats