Anatomy and Physiology of Animals/Urinary System
- 1 Objectives
- 2 Homeostasis
- 3 Water In The Body
- 4 Maintaining Water Balance
- 5 The Kidneys And Urinary System
- 6 Kidney Tubules Or Nephrons
- 7 Water Balance In Fish And Marine Animals
- 8 Diabetes And The Kidney
- 9 Other Functions Of The Kidney
- 10 Normal Urine
- 11 Abnormal Ingredients Of Urine
- 12 Excretion In Birds
- 13 Worksheet
- 14 Test Yourself
- 15 Websites
- 16 Glossary
Water In The Body
Maintaining Water Balance
The Kidneys And Urinary System
The kidneys in mammals are bean-shaped organs that lie in the abdominal cavity attached to the dorsal wall on either side of the spine (see diagram 12.2). An artery from the dorsal aorta called the renal artery supplies blood to them and the renal vein drains them.
Diagram 12.3 - The urinary system
Diagram 12.4 - The dissected kidney
Kidney Tubules Or Nephrons
Diagram 12.5 - Several kidney tubules or nephrons
Diagram 12.6 - A kidney tubule or nephron
Processes Occurring In The Nephron
The Production Of Concentrated Urine
Water Balance In Fish And Marine Animals
Fresh Water Fish
Diabetes And The Kidney
Other Functions Of The Kidney
Normal urine consists of water (95%), urea, salts (mostly sodium chloride) and pigments (mostly from bile) that give it its characteristic colour.
Abnormal Ingredients Of Urine
Excretion In Birds
Use this Excretory System Worksheet to help you learn the parts of the urinary system, the kidney and kidney tubule and their functions.
- http://www.biologycorner.com/bio3/nephron.html Biology Corner. A fabulous drawing of the kidney and nephron to print off, label and colour in with clear explanation of function.
- http://health.howstuffworks.com/adam-200032.htm How Stuff Works. This animation traces the full process of urine formation and reabsorption in the kidneys, its path down the ureter to the bladder, and its excretion via the urethra. Needs Shockwave.
- http://en.wikipedia.org/wiki/Nephron Wikipedia. A bit more detail than you need but still good clear explanations and lots of information.