Pseudocoelom - metazoa, Biology

Pseudocoelom - Metazoa

The platyhelminths which do not have a body cavity surrounding the gut, have a solid type of body constitution. The mesoderm completely fills the space between body wall and alimentary canal in the form of a network of cells called parenchyma. Such animals are called acoelomates. In nematodes, there is a different situation:

675_Pseudocoelom.png

Figure:  Section of (a) acoelomates (b) pseudocoelomates

the mesoderm is confined to specific circumscribed regions within the body cavity, and this cavity is neither lined nor filled with mesoderm. The cavity is in fact a persistent blastocoel of the embryo and is called pseudocoel. The internal organs are free within the pseudocoel. The body cavity has no lining of peritoneum derived from mesoderm. Animals so constructed are called pseudocoelomates.

Posted Date: 1/15/2013 2:13:58 AM | Location : United States







Related Discussions:- Pseudocoelom - metazoa, Assignment Help, Ask Question on Pseudocoelom - metazoa, Get Answer, Expert's Help, Pseudocoelom - metazoa Discussions

Write discussion on Pseudocoelom - metazoa
Your posts are moderated
Related Questions
Admission Information   The physician and nurses are the primary source of facts concerning the purpose of therapeutic plan and expected outcome of hospitalization. The informa

Q. Describe Lipoprotein? Ans. There is considerable current interest in this lipoprotein, which consists of LDL with an additional apoprotein-apoprotein (a) attached to it

What is cellulose? Cellulose is a long-chain polymeric polysaccharide carbohydrate, of beta-glucose. It creates the primary structural component of green plants. The primary ce

Pulmonary Valvotomy on Cardio Pulmonary Bypass and use of Cardioplegia :  Single aortic cannulation and separate SVC and IVC cannulation arc done. The cavae are snared to

Explain the Reduction in cancer risk? Different cancers, especially colon and breast cancer, has been linked not only to phytates but also to protease inhibitors. In vitro stud

These are solid, liquid or gaseous substance present in the atmosphere in such concentrations, as may be or tend to be injurious to human beings or other living creatures, plants a

State the types of brain trauma? There are two main types of brain trauma a) open head injury and b) closed head injury

why would it be difficult to determine accurate values for the four variables in the Lotka-Volterra predator-prey model (a, rprey, m, b) for animals in the real world?

Define the terms umbra and penumbra, and describe how they relate to solar eclipses.

Cation Exchange Capacity The adsorption of a cation by a colloid nucleus or micelle and the accompanying release of one or more ions held by the micelle is termed as 'cation ex