1 Pseudocoelomate animals have a pseudocoelom (literally âfalse cavityâ), which is a fully functional body cavity. 2  Tissue derived from mesoderm only partly lines the fluid filled body cavity of these animals.n some protostomes, the embryonic blastocoele persists as a body cavity. These protostomes have a fluid filled main body cavity unlined or partially lined with tissue derived from mesoderm.
POLIO is a highly contagious, life-threatening disease with no cure, and while there are vaccinations to prevent it available, ahead of World Polio Day, the World Health Organisation is now advising countries prepare to give out lower doses to make stocks last. 07:50, Mon, Oct 24, 2016 | UPDATED: 09:56, Mon, Oct 24, 2016. GETTY.
Paralytic polio. In rare cases, poliovirus infection leads to paralytic polio, the most serious form of the disease. Paralytic polio has several types, based on the part of your body that's affected â your spinal cord (spinal polio), your brainstem (bulbar polio) or both (bulbospinal polio). Initial signs and symptoms of paralytic polio, such as fever and headache, often mimic those of nonparalytic polio.