Salt glands in birds and reptiles, Biology

Salt Glands in Birds and Reptiles

Marine reptiles for example, iguanas, estuarine sea turtles, crocodiles, sea snakes and marine birds like the marine teleosts do not produce urine which is hyperosmotic to their body fluids. Instead they have specialised organs for the secretion of salts known as salt glands, located in the cranium of the animals. In birds these are generally present on the bill below the eyes and in lizards they are near the nose or eyes. In the brackishwater crocodiles salt glands are found in the tongue. Although neither reptilian nor avian kidneys are capable of producing a very hypertonic urine, the salt glands of marine reptiles and birds secrete enough salt to enable them to drink salt water even though their kidneys are unable to produce urine more concentrated than seawater.

450_Salt Glands in Birds and Reptiles.png

Figure: Salt Glands in Birds and Reptiles

Salt glands, along with  the gills of marine  teleosts,  compensate  in  these groups for the  inability of  the  sub-mammalian  kidney  to produce  a urine  that  is strongly hypertonic to their body fluids.

Posted Date: 1/16/2013 2:44:38 AM | Location : United States







Related Discussions:- Salt glands in birds and reptiles, Assignment Help, Ask Question on Salt glands in birds and reptiles, Get Answer, Expert's Help, Salt glands in birds and reptiles Discussions

Write discussion on Salt glands in birds and reptiles
Your posts are moderated
Related Questions
SPECIAL FEATURES

Give a short explanation of what UPS really means and why it is so important to health practitioners and consumers/patients.

Explain Echinocandins It inhibit synthesis of β (1,3)-D-glucan, an essential component of the fungal cell wall. The potential for adverse effects in humans is low because of th

Implant Selection Errors There are a plethora of commercially available implant systems and designs. Qualitative and quantitative nature of the available bone should be careful

Explain the Klebsiella - Characteristics of Bacteria? It is gram negative, non-sporulating, non-motile and non-pigmented rod, which is commonly found in soil or water. It is th

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Commonly adapted different disposal methods by the municipal corporations are: (a)   Open dumping (b)   Land filling (c)    Sanitary land filling pyrolysis (d)   Incine

Define Conjunctival Xerosis - Micronutrient Deficiencies? Conjunctiva in nonnal children is bright white, smooth and glistening. Conjunctival xerosis is characterized by drynes

factors affecting nitrogen balance

What is Plant Tissues explain there types? Vascular plants have separate organs to carry out specialized functions. For instance, leaves function to convert radiant energy to