air bladder

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air blad·der

a gas-filled sac that is present in most fish and functions as a hydrostatic organ; it is located beneath the vertebral column primarily in the anterior abdomen and is connected with the esophagus in some species (for example, goldfish). Oxygen is transferred from a rich venous sinus into the swim bladder to increase buoyancy.

Synonym(s): swim bladder

air bladder

1. See swim bladder.

2. See float.

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References in periodicals archive ?

The heart of these products is a lightweight air bladder made of a plastic resin that is fed data from pressure sensors and a controlled air valve system in simulating the playing environment.

Making it real

The extra buoyancy of primitive lungs, which probably evolved from the air bladders found in fish, may have helped get these early transitional organisms on the move, too.

African lungfish walk in water: study suggests four-legged locomotion began at sea

It uses a series of straps and expandable air bladders that make it easy to fit over the shoulders and torso yet anchor it in place for support.

Reclaiming a limb

The recliner employs seven separate, active air bladders supporting the neck, lower back, buttocks and thighs.

A revolution in seating

eliminate existing roof air bladders, eliminate existing ravines where standing water, melting the bottom layer of roof patches; 4.

School roof repair works

Unfortunately, at least 12 died from the strain of bringing them up 120 feet, despite deflating their air bladders and returning them to the Gulf.

Snapper kill hardly incidental

They are made with synthetic rubber skin which is pulled over steel skeletons, motors and air bladders.