Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Protonephridia and Metanephridia
Nephridia take place in two major forms - the protonephridium and metanephridium. Protonephridia are found in flat worms. The protonephridial canals end blindly in structures called flame cells or solenocytes internally. Flame cells comprise central cavities that are continuous with the cavities of tubules and consist of a bunch of cilia - the flame. Actually, the flame cell interdigitates along with the first cell of the tubule, by means of finger shaped processes. In solenocytes, the cell lumen is prolonged into a delicate tube and the flame is reduced to a single flagellum. Flat worms usually have a pair of protonephridia. The protonephridial canals are much branched bearing flame ceIls at the end of branches. The flame cells are found scattered during the parenchyma. The flame cells do the filtration; the filtered fluid is propelled by flagella. The nephridiaI epithelium performs the functions of reabsorption and secretion. These physiological mechanisms are comparable with those performed by a vertebrate kidney.
Which of the below terms is used to describe the formation of fibrous tissue where it generally does not exist? Is it: a) Fibrosis b) Fibrogenesis c) Fibrositis d) Non
Alfred Sturtevant and Seymour Benzer's studies of recombination in both Drosophila and bacteriophage demonstrated which of the following? A. The gene is an indivisible unit and
Decay and Nutrient Cycling Soil organisms are the chief agents of decay of organic matter. Decomposition and mineralisation of organic matter results in release of inorganic nu
Explain about the Invert sugar? Invert sugar is sucrose, which can be hydrolysed to split the disaccharide into its component sugars, fructose and glucose. It is known as inver
Planning of Nursing Care Promote nonnal urinary pattern or releive excess fluid Administer medication as prescribed Protect the children from secondary infecti
What is Class Reptilia ? Class Reptilia include the vertebrates that have successfully transitioned to a terrestrial lifestyle by evolving protective scales and a "land egg."
Describe the structure of alginate The commercially available alginates are white to cream coloured powders. 1% alginic acid solution gives a pH value of 2.9 while it is 2.3 an
Lamivudine This oral antiretroviral nucleoside analog used to treat HIV is also FDA-approved for treatment of chronic HBV infection. A trial in Asian patients with chronic HBV
Explain the factor Chromosomal Inheritance? A huge step forward in our understanding of heredity came in 1902, when a biologist named Walter S. Sutton proposed that Mendel's "f
Describe the Patent Ductus Arteriosus? It is the persistence of normal fetal channel connecting the aorta and pulmonary artery. It accounts for 5-10 per cent of all CHDs. Funct
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd