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  Compressed TOC
The Process of Protein Digestion
Adaptation of Parasites to their mode of Life
Micro-organisms and food processing:
   The Bacteria
   The Fungi 
Methods of Food Preservation
Adaptation of the Mammalian Heart to its Functions
Transportation of gases in the blood:
   Oxygen
   Carbon Dioxide
The mechanism of movement of water from soil to leaves of a tall plant
The Mechanism of Translocation by:
   Cytoplasmic Streaming
   Mass Flow
Adaptations of the Phloem Tissue
The role of Transpiration in plants
The Environmental Factors Affecting Transpiration
Gaseous Exchange in plants and Animals
Adaptations of the airways for gaseous exchange
Adaptations of the Lungs for Gaseous exchange
The process of Inspiration and Expiration in Mammals
Mechanism of gaseous Exchange in:
       Bony Fish,
       Frog,
       Insect
The Mechanism of Opening and Closing of Stomata
Adaptation of the Kidney to its Functions
Formation of Urea in Human Body
Adaptations of the Human Skin to its Functions
Changes on the Skin due to Temperature Variation
The Role of Hormones in Homeostasis
Reproduction In Animals
Adaptation of the Mammalian Male Reproductive Organ to its Functions
The Influence of Hormones on Menstrual Cycle
Mechanisms that hinder self-fertilization  in Plants
The adaptations of Insect-Pollinated flowers
Events that take place after fertilization until a new fruit is formed
Adaptation of seeds for Dispersal
Water and Air Pollution, and the remedies
Adaptation of plants to their Habitat
     Xerophytes (Desert Plants);
     Hydrophytes (Water Plants)

 
 

..Home/Contents/ Adaptations of the Kidney

 


EXPLANATION OF HOW THE KIDNEY IS ADAPTED TO ITS FUNCTIONS:

Its tubules are long and coiled; providing a large surface area for efficient reabsorption  and enough time is allowed for useful products is allowed for them to be reabsorbed. 

The tubules are supplies with blood capillaries that ensure constant removal of reabsorbed substances hence creating room for more reabsorption. 

The efferent vessels leaving the glomerulus have a narrower lumen than the afferent tubule. This helps to build up a higher pressure necessary for ultra-filtration.  

There exists micro villi in he inner surface of the epithelial lining of the proximal convoluted tubules that provides a larger surface area for efficient reabsorption. 

The cells in the proximal convoluted tubule have many mitochondria; this provide energy for active reabsorption of amino acids, mineral salts and glucose.  

The loop of Henle has a U- shape to ensure maximum absorption of water hence reducing its wastage. 

The afferent vessel that enters the kidney is highly branched to form glomerulus. This provide large surface area for ample blood to flow into the kidney for filtration.

 

 

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