Body Cavities
![Body Cavities 3852](/photos/body-cavities-3852.jpg)
A body cavity can be defined as the space that remains after the organs inside it are removed, but this definition does not do justice to the variety and
![Schematic diagrams of the bodies of animals with coeloms, with pseudocoeloms, or without body cavities.](../images/biol_01_img0055.jpg)
In humans all but the cranial cavity develop from the coelom (pronounced SEE-lum). A coelom is a cavity that is entirely enclosed within cells derived from the middle layer of embryonic tissue. A few groups of animals, such as roundworms (Nematoda), have a body cavity that is only partly enclosed by tissue from the middle layer. Such a body cavity is called a pseudocoelom (pronounced SOO-doe-SEE-lum). In a few other groups, such as flatworms (Platyhelminthes), there is no body cavity.
SEE ALSO Development ; Platyhelminthes
C. Leon Harris
Bibliography
Pechenik, Jan A. "Classification by Developmental Pattern." In Biology of the Invertebrates, 4th ed. Boston: McGraw-Hill Higher Education, 2000.
Saladin, Kenneth S. "Body Cavities and Membranes." In Anatomy and Physiology. Boston: McGraw-Hill, 1998.
What is Body wall and its location?please answer