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

Determine the parts consists in our urinary system, Determine the parts con...

Determine the parts consists in Our urinary system Our urinary system consists of following:  Two kidneys  Two ureters  One urinary bladder  One urethra Apart fr

Agro industrial-non-edible and other minor oilseed cakes, NON-EDIBLE AND OT...

NON-EDIBLE AND OTHER MINOR OILSEED CAKES Besides the annually cultivated oilseed crops namely, groundnut, sesame, mustard, linseed, coconut, cotton, sunflower and safflower, I

Define signs and symptoms of iron deficiency anaemia, Define Signs and symp...

Define Signs and symptoms of iron deficiency anaemia? Since the level of haemoglobin is reduced in the blood, it causes paleness (pallor) on certain parts of the body. Initiall

Enzymes, what is rennin? how does it work? and what is its optimum pH level...

what is rennin? how does it work? and what is its optimum pH level and activity temperature?

Show protective structures of the central nervous system, Q. What are the p...

Q. What are the protective structures of the central nervous system present in vertebrates? In vertebrates the brain and the spinal cord are protected by membranes, the meninge

Eukaryotic chromosomes, The vast amount  of genomic  DNA in a eukaryotic  c...

The vast amount  of genomic  DNA in a eukaryotic  cell is strongly  packaged  in chromosomes  having  within  a specialized  organelle and  the nucleus.  This very vast amount of e

Complications during angina pectoris, Q. Complications during angina pector...

Q. Complications during angina pectoris? It is a symptom giving a warning of impending myocardial infarction, sudden cardiac death or even ischemic necrosis of the brain leadin

Effects on ecosystem - air pollutants, Effects on Ecosystem - Air pollutant...

Effects on Ecosystem - Air pollutants The effects of pollutants on ecosystem become visible after a long period of exposure. In highly industrialised countries the vegetation

How does water move in sponges, Q How does water move in sponges? What is t...

Q How does water move in sponges? What is the function of the pores in these animals? Sponges are filtering beings they make water enter their bodies by their lateral pores. Wa

Cells, what are golgi apparatus

what are golgi apparatus

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