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

Define myocardial infraction and stress testing, Q. Define Myocardial infra...

Q. Define Myocardial infraction and stress testing? Prediction of disease is one of the primary functions of stress testing. We would like to be able to predict in each patient

Winter stratification - thermal stratification, Winter Stratification - The...

Winter Stratification - Thermal stratification During extremes of winter the surface layer of the lake freezes or attains a temperature close to 0° Celsius. Under these condit

Pain - criteria for endosteal implants, Q. Pain - criteria for endosteal im...

Q. Pain - criteria for endosteal implants? Pain and tenderness are subjective criteria and depend on patient's  interpretation of the degree of discomfort. Pain is defined as u

Describe technique operation prosthetic valve endocarditis, Describe the Te...

Describe the Technique of Operation in prosthetic valve endocarditis? The operative principle is drainage of abscess, removal of debris and valve rep or replacement to reverse

Chemical bond maintains the pairing of each chain, Which type of chemical b...

Which type of chemical bond maintains the pairing of each chain in the DNA molecule? Ans) To form the DNA molecule, purine bases bind to pyrimidine bases by intermolecular bonds

#title., trematodes parasitic mode of feeding

trematodes parasitic mode of feeding

Micronutrients in food, Vitamins Micronutrients are as important as maj...

Vitamins Micronutrients are as important as major nutrients for the animal body. Vitamins are organic compounds required in minute amounts to assist metabolic processes and for

What is the non-paralytic squnit, Concomitant or Non-Paralytic Squnit ...

Concomitant or Non-Paralytic Squnit This type of squint usually occurs when there is an obstacle in the sensory pathway of binocular reflex such as refractive errors, opacities

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