In most salamander larvae, feeding is accomplished by a "gape-and-suck" method, in which the throat is expanded, or gaped, to produce a suction that draws water and prey into the opened mouth.
The Bryde's whale has between 40 and 70 pleats on its throat which expand while feeding, according to the Whale and Dolphin Conservation Society.
Why? Ducks and geese are omnivorous animals, and have throats that expand to allow large food in the manner that a snake would eat their food whole, or in large chunks.
They catch multiple small fish by expanding the throat pouch, which must be drained above the water surface before swallowing.
Fourth, on the basis of characteristics of pore throat structure, according to the back-stripping constraint result of plane porosity and the principle of equivalent expanding, the pore throat structures of reservoirs can be estimated at the geological time of the main diagenetic events.
The whale has a series of 56 100 pleats or grooves along the bottom of the body that run from the tip of the chin to the navel that allow the throat area to expand greatly during feeding.
In contrast, expanding the furnace throat space to CW = 0.558 improves greatly the above problems and the flow-field symmetries are generally acceptable, accompanied by improved burnout rate and lowered NOx emissions.
Sharks breathe chiefly by opening the mouth while expanding the mouth-throat (bucco-pharyngeal) cavity and contracting the gill pouches to close the gill slits.
A defending male responds to an invader by expanding the body, puffing out the throat, and elevating or waving special head flaps.
Sounds like exactly the sort of vigorous innovation, expanding consumer choice, falling prices and cut-throat competition that policymakers should want, right?
