These cells can build up enormous amounts of pressure, even as high as 140 atmospheres.
These cells can build up enormous amounts of pressure, even as high as 140 atmospheres. They accomplish this by building high concentrations of ions inside while keeping their walls impermeable to water. If the right chemical stimuli are present and the trigger is touched, water rushes in and ejects a filament outwards. This filament, part of the nematocyst, snags the prey and the filament draws it back to the organism. FTP, name these specialized stinging cells whose name is derived from the phylum in which they are exclusively found and which includes jellyfish and hydra.
These cells can build up enormous amounts of pressure, even as high as 140 atmospheres.
{cnidocytes}