Ability of mammalian kidney, Biology

Ability of Mammalian Kidney

The ability of mammalian kidney to concentrate urine is closely related to the length of the loop of Henle. Animals that produce the most highly concentrated urine (e.g., sand rat) have very long loops. Those that have a limited ability to concentrate the urine (e.g., beaver) have short loops. On the other hand, mammals with an intermediate ability to concentrate the urine (e.g., man, rabbit) have kidneys with both short and long loops.

1879_Ability of Mammalian Kidney.png

 

Figure:  Comparison of the kidneys of three rodents from different environments

Since the loop of Henle is a U-shaped tube embedded in the medulla, longer loops would mean thicker medulla. The relative thickness of the renal cortex and medulla in mammals is therefore, correlated with the urine concentration in the animals. In forms which produce low maximum urine concentration, the medulla is much thinner and smaller than in species that produce a highly concentrated urine. This is best appreciated from a comparison of the medullary thickness in rodents from aquatic, general terrestrial and desert environment.

Posted Date: 1/16/2013 2:14:18 AM | Location : United States







Related Discussions:- Ability of mammalian kidney, Assignment Help, Ask Question on Ability of mammalian kidney, Get Answer, Expert's Help, Ability of mammalian kidney Discussions

Write discussion on Ability of mammalian kidney
Your posts are moderated
Related Questions
CARBOHYDRATE METABOLISM Carbohydrates  are  broken down into  monosaccharides which are absorbed into  the  blood stream.  In  the  liver and muscles, most  of  the glucose  is


State the various aspects of functioning of neuropsychological The MSE deals with questions concerning the addressee's Consciousness, Emotional State, Thought Content and Clar

Explain in details about Respiratory system Respiratory system starts from nostrils through which we inhale air in the nasal cavity. Then, air enters pharynx and goes through l

Precautions It is a common observation that BP recordings are variable when taken by different individuals. To decrease this variability it is important that certain precautio

Define Water soluble Vitamins - B complex Vitamins and Vitamin C? Vitamins are essential nutrients found in foods. The requirements are small but they perform specific and vit

Allosteric enzymes are those that have more activation center and to which other substances known as allosteric regulators bind. Allosteric regulators can be allosteric inhibito

PKU is a recessive disorder. Suppose two people who were heterozygous for PKU married and had a child. What is the probability that the child will have PKU?

Which of the following serves as an actuating signal, or as part of an actuating signal, in a positive feedback system? A. Blood plasma levels of PTH (Parathryroid Hormone).

PRODUCT S OF HEMP PLANT - Four drugs - bhang, ganja, charas & marijuana obtained from Cannabis indica and C. sativa of family Moraceae . Main alkaloid is tetrah