https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/introduction-to-the-kidneys/v/meet-the-kidneys 2023-08-17T23:33:36.770424498Z Meet the kidneys! The kidneys play a vital role in filtering blood and producing urine. Understand how these fist-sized organs receive oxygenated blood, hold onto essential nutrients, and expel waste products. Discover the unique dual capillary system, the vasa recta and peritubular capillaries, that make this process possible. Raja Narayan video https://cdn.kastatic.org/googleusercontent/5k1OWSEHDL2rqpTqZ_0YQRFJjyey3GqT_ZZE8E-3uKOxOVbn8faldAVTLUKAWWYg-Ow-hkUCHzBhMc2GcP8jYZQ4 Meet the kidneys! The kidneys play a vital role in filtering blood and producing urine. Understand how these fist-sized organs receive oxygenated blood, hold onto essential nutrients, and expel waste products. Discover the unique dual capillary system, the vasa recta and peritubular capillaries, that make this process possible. https://cdn.kastatic.org/ka-youtube-converted/mcQQGGShmLs.mp4/mcQQGGShmLs.mp4 384 Kidney and nephron function https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/introduction-to-the-kidneys/v/how-do-our-kidneys-work 2023-04-19T21:14:29.759927248Z Kidney function and anatomy Kidneys are important organs that filter our blood and produce urine to maintain balance (homeostasis) in our body. Blood enters the kidneys through renal arteries and exits through renal veins. The nephron, the smallest functional unit of the kidney, handles filtration and collection. This process helps regulate pH, blood pressure, and waste removal. Raja Narayan video https://cdn.kastatic.org/googleusercontent/0FPGWziOxoyH20df0kHMKk9uFDhZWY_e5jSvsBB72SSb3YLd12Bg34X5HYa0EaTbSv15YZun38k0h0jnyZGKpQj6 Kidney function and anatomy Kidneys are important organs that filter our blood and produce urine to maintain balance (homeostasis) in our body. Blood enters the kidneys through renal arteries and exits through renal veins. The nephron, the smallest functional unit of the kidney, handles filtration and collection. This process helps regulate pH, blood pressure, and waste removal. https://cdn.kastatic.org/ka-youtube-converted/ctGkLYuUCvU.mp4/ctGkLYuUCvU.mp4 478 Kidney and nephron function https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:excretion/x2a084a90105205d2:kidney-and-nephron-function/a/anatomy-of-the-kidney-and-the-nephron 2024-11-26T19:53:32.781965247Z Anatomy of the kidney and the nephron This article provides an overview of the structure of the kidney and the different components of the nephron, as well as its blood supply. article https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/introduction-to-the-kidneys/v/glomerular-filtration-in-the-nephron 2023-08-17T23:33:36.770424498Z Glomerular filtration in the nephron This video explores the renal system, focusing on the nephron's role in kidney function. It details the glomerulus's filtration process, the afferent and efferent arterioles' roles, and the function of Bowman's Capsule. The video also explains why fluid leaks out in the glomerulus but not in other arterioles.Leave feedback   Raja Narayan video https://cdn.kastatic.org/googleusercontent/1V_00oQA_8JDiCfsGzAeugIyvs_r4gv5eEKwBFirDsGTA5zGLKIYBaZKJe0c-b0Cfdk_UN95iTFJORj4yq4N6dj6 Glomerular filtration in the nephron This video explores the renal system, focusing on the nephron's role in kidney function. It details the glomerulus's filtration process, the afferent and efferent arterioles' roles, and the function of Bowman's Capsule. The video also explains why fluid leaks out in the glomerulus but not in other arterioles.Leave feedback   https://cdn.kastatic.org/ka-youtube-converted/wWsdcfGta4k.mp4/wWsdcfGta4k.mp4 438 Kidney and nephron function https://www.khanacademy.org/science/health-and-medicine/circulatory-system/blood-pressure-control/v/parts-of-a-nephron 2020-10-23T18:44:07Z Parts of a nephron Learn about the 5 major parts of the kidney's nephron. Rishi is a pediatric infectious disease physician and works at Khan Academy. Rishi Desai video https://cdn.kastatic.org/googleusercontent/AwM9zsQLqQeobuHlhZSWif-ms9cZowAlGY8hybgEoVMRJtzdT23p5cKACJDZKleVrcMvclyakzsr0gaHYczUW4g Parts of a nephron Learn about the 5 major parts of the kidney's nephron. Rishi is a pediatric infectious disease physician and works at Khan Academy. https://cdn.kastatic.org/ka-youtube-converted/_vBJkK4eocA.mp4/_vBJkK4eocA.mp4 549 Kidney and nephron function https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/introduction-to-the-kidneys/v/countercurrent-multiplication-in-the-kidney 2023-08-17T23:33:36.770424498Z Countercurrent multiplication in the kidney Explore the workings of the nephron, a key component of the renal system. Learn about the process of glomerular filtration, the role of the proximal convoluted tubule, the function of the loop of Henle, and the importance of the distal convoluted tubule. The video also highlights the concept of countercurrent multiplication, providing a comprehensive understanding of renal physiology. Raja Narayan video https://cdn.kastatic.org/googleusercontent/KsG8zhgyd6nRe8t-QrLoMQbE1dgRovMwuwHZHQVHORhe5TJcw6adeAT0Rd2y_8J5V7_9LKn6NCb4WyZ_aNXEvNki Countercurrent multiplication in the kidney Explore the workings of the nephron, a key component of the renal system. Learn about the process of glomerular filtration, the role of the proximal convoluted tubule, the function of the loop of Henle, and the importance of the distal convoluted tubule. The video also highlights the concept of countercurrent multiplication, providing a comprehensive understanding of renal physiology. https://cdn.kastatic.org/ka-youtube-converted/Vqce2dtg45U.mp4/Vqce2dtg45U.mp4 653 Kidney and nephron function https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:excretion/x2a084a90105205d2:kidney-and-nephron-function/e/excretion-in-human-beings 2026-03-05T08:50:45.400692349Z Excretion in human beings This exercises assesses student's understanding of structure and function of excretory system at an elementary level. saiyem exercise https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:excretion/x2a084a90105205d2:kidney-and-nephron-function/e/glomerular-filtration 2026-04-08T00:16:02.937952483Z Glomerular filtration This exercise contains questions on the mechanism of filtration of blood by the glomerulus. Moumita Sen exercise https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:excretion/x2a084a90105205d2:kidney-and-nephron-function/e/the-kidneys 2026-04-20T05:52:07.909428702Z The human excretory system This exercise contains questions on the structure of kidneys and an overview of their functions. Moumita Sen exercise https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:excretion/x2a084a90105205d2:kidney-and-nephron-function/e/countercurrent-mechanism-and-micturition 2026-01-24T15:20:42.617490009Z Countercurrent mechanism and urination This exercise is on the countercurrent multiplication mechanism and micturition. Moumita Sen exercise https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/introduction-to-the-kidneys/e/introductory-renal-quiz 2026-04-07T23:36:17.218592739Z Introductory urinary system quiz Introductory renal quiz Rishi exercise