from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An internal body cavity of some primitive invertebrates, similar to a coelom but lacking a mesodermal lining.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A body cavity, of some primitive invertebrates, analagous to a coelom but lacking mesodermal cells
Sorry, no etymologies found.
The pseudocoel is small in the free-living forms but tends to be much larger in the parasitic forms.
The characteristics that link these three groups are the presence of a pseudocoel, as well as their general body plans and musculature. or two in diameter but are usually 10 to 100 centimeters in length.
Juveniles have no need to move because they are oxygen requirements are unknown for this group of organisms and circulation is limited to the movement of fluid through the large pseudocoel.
Globin isoforms with variant properties and functions have been found in the pseudocoel, body wall and cuticle of various nematode species and even in the eyespots of the insect-parasite Mermis nigrescens.