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!
Coxal Glands
There is a pair of coxal glands, in almost all the segments in Onychophora (Peripatus). Developmentally; in every segment a hollow follicle or somite arises and in the trunk region, they become divided in dorsal and ventrolateral portions. The ventrolateral portion grows into the appendages and its cavity makes the end sac of the coxal gland. The end sac opens by a ciliated canal, the coelomostome, into acoiled excretory canal. The terminal portion of the canal is enlarged to form a vesicle or bladder. So the coxal glands are derived from coelomoducts. In arthropods there is a likeness in the formation of coxal glands from coelomoducts and the creation of gonads and their ducts.
In crustaceans they are found in third and sixth segments and they are suitably. named depending upon the site of their opening to outside. The one located at the base of the third segment opens at the base of the antenna, therefore called antennal gland. The one located in the sixth segment opens at the base of the second maxilla, and is termed as maxillary gland. Antennal gland is present in the larval forms of Ostracoda, Copepoda, Branchiopoda, Branchiura, Cirripedia and lower Malacostraca but TP the adults of these groups have maxillary glands. The adult amphipod and decapod crustaceans comprise antennal glands. Mysidacea, a primitive group of crustaceans have both of the antennal and maxillary glands functional. Most arachnids have a pair of coxal glands opening in the sixth segment, opening at the base of third pair of walking legs. In Limulus, there are four pairs of coxal glands.
Water is most dense and thus heavier at 4 degreese celceus. At 0 degreese celceus ice forms and can float on liquid water. Assuming that ice were most dense at 0 degreese celceus,
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Explain Metabolic changes during infection With the rise in body temperature above normal (98.4 0 F or 37°C) due to infection several metabolic changes occur in the body
The symptoms and signs of endocarditis are often constitutional and, when localized, often result from a complication of IE rather than reflect the intracardiac infection itself. C
Physiologic Adaptation Modeling is a surface specific activity (apposition or resorption) that produces a net change in the size and/or shape of the bone. It is an uncoupled pr
Is the esophagus a muscular organ? Why even in a patient lying totally flat on a hospital bed can the swallowed food reach the stomach? The esophagus is a predominantly muscula
Q. What is proteinuria? Why is proteinuria a sign of glomerular renal injury? Proteinuria means losing of proteins through urine under normal conditions proteins are too big to
Viridans Streptococci These streptococci, which cause 30 to 65 per cent of NVE case unrelated to drug abuse, are normal inhabitants of the oropharynx, characteristically produce
Q. Is there a difference between the initial and the final energy levels in non-catalyzed and catalyzed reactions? The catalysis does not modify the energetic state of reagents
Explain Bioluminescence - Ethological Approach in Taxonomy In those animals which exhibit bioluminescence. The pattern produced by the bioluminescence is used in taxonomy. It h
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