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The Urinary System

Topic Review on "Title":

Homeostasis I: A balancing act The basic principle of homeostasis is that if there is too much of something in the body, it will be eliminated, while if there’s too little of something, it will be retained.

Kidney: The kidneys are bean-shaped organs located behind the stomach that screen the body’s blood and remove wastes for subsequent excretion in the form of urine. The kidney has three regions: the outer cortex, the central medulla, and the inner pelvis.

Ureter: The ureters transport the urine from the kidneys to the bladder for storage.

Bladder: The bladder stores urine until the moment of elimination.

Nephron: The basic unit of the kidney is the nephron. Each kidney is composed of roughly 1 million nephrons. Kidney nephrons filter the blood, reabsorbing what the body needs and excreting the rest as urine.

Urine Formation
Blood is continually filtered within Bowman’s capsule. Wastes and other solutes are passed into the tubule for inclusion in the urine, while large items like cells or large proteins are retained in the blood.

High pressure within the glomerulus allows small solutes and water to escape from the glomerular blood flow into the space of the Bowman’s capsule.

The renal tubule is the second portion of the nephron, and it is specialized for absorption. It descends from the Bowman’s capsule.

Rapid Study Kit for "Title":
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"Title" Tutorial Summary :

The urinary system is involved osmoregulation and acid-base equilibrium, as well as the excretion of waste. The kidney filter blood and the filtrate is delivered to the bladder for excretion out of the body. As part of the filtering process, kidneys also reabsorb fluids depending on the needs of the body.

Tutorial Features:

Specific Tutorial Features:

  • Detailed anatomical drawings of the kidneys, the nephron, and the filtration system are presented.

Series Features:

  • Concept map showing inter-connections of new concepts in this tutorial and those previously introduced.
  • Definition slides introduce terms as they are needed.
  • Visual representation of concepts
  • Examples given throughout to illustrate how the concepts apply.
  • A concise summary is given at the conclusion of the tutorial.

"Title" Topic List:

Urinary System Structure


Urine Formation

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