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.
What is Contact Plate Method? Contact Plate (RODAC - Replicate Organism Direct Agar Contact) Method - Contact plates are special petri plates containing suitable agar media wit
What are sensory receptors? Sensory receptors are structures specialized in the acquiring of information, such as temperature, mechanical pressure, pH, chemical environment and
Which is the extraembryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos? The allantois is the ext
What are the three categories in which food protein sources can be divided into Protein food sources can be separated into the following three categories: Proteins of pl
Explain the Minimum Requirement of nutritional needs? Minimum nutrient requirement is defined as the 'lowest amount of the nutrient ji-om the diet that will prevent clinically
Q Lower Oesophageal Sphincter? Competency of LES (Lower Oesophageal Sphincter) is important. The pressure of this sphincter is controlled by many factors, one of which is hormo
Q. Can you explain Abdominal Aortography? The abdominal aorta starts at the level of diaphragm (T12). Here too, prior to performing an abdominal aortogram, a sound knowledge of
Walking In the process of walking the motion of the two legs is coordinated so that one foot or the other is always in contact with ground. Walking is the best form of exercise
What is tree girdling? What happens to a plant when that girdle is removed from the stem (below the branches)? Malpighi's girdling, or tree girdling, is the removal from a ste
Triglyceride accumulation is not a feature of the atherosclerotic plaque but triglyceride-rich lipoproteins also contain cholesterol esters and it is likely that some of these are
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