an air sac in a sentence
1. In most species, the sound is produced by expelling air from the lungs over the vocal cords into an air sac or sacs in the throat or at the corner of the mouth.
2. Tympanal organs or hearing organs consist of a membrane (tympanum) stretched across a frame backed by an air sac and associated sensory neurons, are found in two families.
3. Roars are produced by modified larynx and enlarged hyoid bone which contains an air sac.
4. The walrus has an air sac under its throat which acts like a flotation bubble and allows it to bob vertically in the water and sleep.
5. These sounds are reflected by the dense concave bone of the cranium and an air sac at its base.
6. These sounds are reflected by the dense concave bone of the cranium and an air sac at its base.
7. The term air mattress may also refer to a certain inflatable swimming pool or beach toy, which has an air-sac "pillow" and several (usually four or five) tubes running its length.
8. It was probably hollowed out by an outgrowth of an air sac in the nasal bone.
9. An air-sac system connected to the spaces not only lightened the long necks, but effectively increased the airflow through the trachea, helping the creatures to breathe in enough air.
10. In addition, it is possible that sauropods may have had an air sac system, like those in birds, which could reduce all sauropod mass estimates by 20% or more.
11. The specimen is also unusual in that it preserves some soft tissue remains: apart from the intestine, what the describers interpreted to have been an air sac was preserved between its pubic and ischial bones in the form of a vacuity.
12. Daniela Schwarz and colleagues, in 2007, concluded that the bifurcated neural spines of diplodocids and dicraeosaurids enclosed an air sac, which would have been connected to the lungs as part of the respiratory system.
13. Many bird livers are large too, showing that such a trait is compatible with an air-sac system.
14. The most widespread Europan species is the bladder bird, which carries its own air supply with it in an air sac, allowing it to cross over the airless peaks.
15. A tympanal organ (or tympanic organ) is a hearing organ in insects, consisting of a membrane (tympanum) stretched across a frame backed by an air sac and associated sensory neurons.
16. The anthers are a green-yellow in colour and they lack an air sac.
17. Examples include crickets that vibrate their wings, birds that flap their feathers, and frogs that use an air sac instead of lungs.
18. Most frogs use an air sac located under their mouth to produce mating calls.
19. The sound is made by the rapid buckling of the timbal ribs, and amplified by resonation in an air sac;
20. Such an organ is generally a membrane (tympanum) stretched across a frame backed by an air sac and associated sensory neurons.
21. The opening above the eye is thought to have accommodated an air sac that would have lightened the skull's weight.
22. Like Zanabazar, there is a pneumatic diverticulum in the jugal bone where an air sac was present within the bone;
23. Daniela Schwarz and colleagues, in 2007, found that the double-row formed by the bifurcated neural spines along the spine of dicraeosaurids would have enclosed an air sac, the so-called supravertebral diverticulum, that would have been connected to the lungs as part of the respiratory system.
24. To find out how having an air sac changed the sounds produced, Dr DE Boer created plastic models of the mouth, tongue and throat and forced air down them to produce different vowel sounds.
25. Some of the models contained an air sac.
26. In apes the hyoid attaches to a large pouch called an air sac , that makes sounds bigger and deeper.
- a balloon
- a resonator
- the atmosphere
- The main vocalisation
- the male's loud advertisement call
- a female
- other males
- a quieter courtship call
- a more aggressive version
- a male intruder
- the expenditure
- much energy
- Other calls
- the advertisement call
- a release call
- unwanted attempts
- a distress
- fright call
- a scream
- The usually nocturnal Cuban tree frog
- Osteopilus septentrionalis
- a rain call
- the territorial behaviour
- home ranges
- such behaviour
- even juveniles
- many frog species
- territorial defence
- specific adaptations
- enlarged teeth
- an aggressive posture
- the intruder
- red back salamanders
- Plethodon cinereus
- marked individuals
- their original daytime retreat
- a log
- A similar proportion
- their home base