formation allows to vertically displacing the larvae in the water column while the bending of the notochord is a prerequisite for the formation of the fin, which is important in swimming horizontally (Barroso et al., 2013).
Instead of venting the gas into the atmosphere, it is collected in the gas bladders
and pumped to liquefier equipment.
Until now, microlayer feedblocks have been used to make specialty films like 76-layer gas bladders
with built-in nitrogen barrier for Nike's inflatable shoe soles, or brightness-enhancing computer-display films with up to 900 layers for 3M Co.
Subsequent chapters cover various body parts and systems, including the skeletal and muscular tissues, the cardiovascular system, swim and gas bladders
, and endocrine glands.
Modern lungfish and certain fish with gas bladders
are well known for their ability to breathe air, but the sculpin and toadfish apparently use the tissue in their gills or mouths to respire, according to Martin.