Watch a lecture and presentation of the urinary system's structures and functions. This is a basic overview of the system, giving scientific explanations as an outline is shown on the screen. Help your biologists become familiar with the...

What is renal agenesis? Renal agenesis is a congenital condition where one or both kidneys don't develop. This video describes the development, pathophysiology, and clinical signs and symptoms of renal agenesis. [4:52]

This lesson will explain how the kidneys regulate blood pressure and fluid balance. It is 1 of 5 in the series titled "Fluid Balance and Blood Pressure."

This lesson will describe in detail the process of reabsorption in the formation of urine. It is 1 of 5 in the series titled "Reabsorption."

This lesson will identify the role of the kidneys in maintaining homeostasis in extracellular fluids. It is 1 of 3 in the series titled "Urinary Homeostasis."

After drinking a few glasses of water on a hot day, you might be struck with a sudden, urge. Behind that feeling are two bean-shaped organs that work as fine-tuned internal sensors. This video details how the kidneys balance the amount...

Watch this movie from Kids Health to learn all about the urinary system including where pee comes from.

Learn the three major triggers for Renin production by the Juxtaglomerular cells. Rishi is a pediatric infectious disease physician and works at Khan Academy. [14:09]

Hank takes us on the fascinating journey through our excretory system to learn how our kidneys make pee. [12:21]

See how Renin and ACE work to cut angiotensinogen down to size. [10:18]

Understand the structure and function of human kidneys. [7:58]

This lesson will identify the causes and affects of various kidney disorders. It is 1 of 5 in the series titled "Kidney Disorders and Health."

This lesson will identify the role of the kidneys in maintaining homeostasis in extracellular fluids. It is 2 of 3 in the series titled "Urinary Homeostasis."

This lesson will identify the role of the kidneys in maintaining homeostasis in extracellular fluids. It is 3 of 3 in the series titled "Urinary Homeostasis."

This lesson will identify the role of the kidneys in maintaining homeostasis in extracellular fluids.

This lesson will identify the major structures and functions of the urinary system. It is 1 of 4 in the series titled "Urinary System: Structure and Function."