Voorbeelden van air sac

• No trematodes were observed in the lung or air sac, heart, liver, spleen and kidney of all bats and swallows.

• Tested organs include lung or air sac, heart, spleen, liver, kidneys and intestine.

• Alterations consisted of thickened air sac walls (fig. 1e), lesions or granulomata at the site of worm attachment, sometimes involving underlying tissues.

• The lung or air sac, heart, liver, spleen, kidney and intestine were collected using different sets of instruments in order to prevent possible cross-contamination.

• Some experiments involve the introduction of tobacco smoke into the animal's mouth or, in the case of hens, into the air sac.

• It was probably hollowed out by an outgrowth of an air sac in the nasal bone.

• This air sac leaves distinctive marks or opening on the bones, including a distinct opening in the upper arm bone ("humerus").

• Air from the lungs is channeled to the air sac, which resonates to make the sound louder.

• Such an organ is generally a membrane (tympanum) stretched across a frame backed by an air sac and associated sensory neurons.

• The syrinx and sometimes a surrounding air sac resonate to sound waves that are made by membranes past which the bird forces air.

• The ribbon seal has a large inflatable air sac that is connected to the trachea and extends on the right side over the ribs.

• Air sac extensions from the lungs occupy the centre of some bones.

• The big end contains the air sac and its shell is pierced by a higher density of pores than the more pointed end.

• While the left abdominal air sac is large and lies to the left of the mesentery.

• These sounds are reflected by the dense concave bone of the cranium and an air sac at its base.