Molluscan kidney, Biology

Assignment Help:

Molluscan Kidney

In molluscs, the coelom is represented by the pericardial cavity and the cavities of the kidneys and gonads. The pericardial coelom opens into the renal cavity via the renopericardial duct. Thus the molluscan kidney is a modified coelomoduct of the metanephridial type opening into the pericardial cavity at one end and the ' mantle cavity at the other.

1355_Molluscan Kidney.png

Figure: Kidney and its relationship to the pericardium in the snail

In the molluscs, an initial fluid is formed in the kidney by ultrafiltration of the blood through the wall of the heart. Reabsorption of valuable materials hke glucose and secretion of unwanted compounds occur subsequently resulting in the formation of the final urine. There is some evidence that in the abalone, Haliotis, glucose re-absorption takes place primarily in the left kidney, while secretion of unwanted compounds occurs in the right kidney. Hydrostatic pressure of the blood provides the filtration pressure and application of back pressure stops urine production.

 

 

 

 

 


Related Discussions:- Molluscan kidney

Explain limited mucosal contact diarrhoea, Q. Explain Limited mucosal conta...

Q. Explain Limited mucosal contact diarrhoea? Limited mucosal contact diarrhoea: It results from situations of inadequate mixing of chyme (semi-liquid mass of food passing thro

Embryology and histology, Embryology: Embryology (from Greek words embryon...

Embryology: Embryology (from Greek words embryon which means unborn embryo and logia which means study) is a branch of science which deals with the development of an embryo starti

Explain e. coli - microbiological study of water, Explain E. coli - Microbi...

Explain E. coli - Microbiological Study of Water? It is always present in human intestine so its presence indicates the faecal pollution and possible presence of other human or

What are analogies for mitochondria, What are analogies for mitochondria? ...

What are analogies for mitochondria? Well, as you know, the mitochondria are the producers of most of a cell's energy and the nucleolus makes ribosomes. The cell wall is only i

Demonstration of diversity of plant and animal - taxonomy, Demonstration of...

Demonstration of Diversity of Plant and Animal - Taxonomy A third objective is the demonstration of tremendous diversity of the plant and animal world and its relation to man's

Calculate the frequencies of heterozygotes, If dimples may be considered a ...

If dimples may be considered a single-gene dominant trait, and 64% of the population features dimples, calculate the frequencies of heterozygotes and both types of homozygotes, ass

Why organism that can not exist in the presence of oxygen, organism that ca...

organism that can not exist in the presence of oxygen ?

Adhesion of cells to extracellular cell matrix, Adhesion of Cells to Extrac...

Adhesion of Cells to Extracellular Cell Matrix You know that the cells in order to move or change shape, adhere to each other or to the substratum in their environment. Usual

Procedures for diagnosis - advanced vaccine technology, A d v a ...

A d v a nce d vaccine technology: Genetic engineering technology is the major scientific revolution of 20th Century. This has helped in developing vaccine

Explain the recommended dietary allowances - nutrition, Explain the Recomme...

Explain the Recommended Dietary Allowances - Nutrition? RDA: The RDA is the average daily dietary intake that is sufficient to meet the nutrient requirement of nearly all healt

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd