Sentences with word «hyoid»

She her team found that howler monkeys face an anatomical trade - off: a species can either have a really big hyoid bone, or it can be very well endowed.

Those species with bigger hyoids live in single - male groups, so it makes sense to invest in what the researchers call «precopulatory traits,» that is, their courtship strategy of attracting the female's attention.

Males with bigger testes and smaller hyoids live in large groups with up to five or six males, and females mate with all males in the group.

The researchers used both new and published data on hyoid and testes size of 144 male howler monkeys from specimens of nine of the 10 species, collected in nine museums in the United States, Brazil, and Europe.

Males with large hyoids and deeper roars but more diminutive testes live in small social groups with often only one male dominating a number of females — a «harem» social model.

But that changed with the discovery of a Neanderthal hyoid bone in 1989.

And to verify previous assumptions that hyoid size determined how deep and resonant the howls were, the team analyzed the frequencies of previously recorded howler monkey calls.

New research on howler species has revealed an evolutionary «trade - off» between investments in the size of the male hyoid — the bulbous, hollow throat bone that allows the howlers» guttural roar to resonate — and in the size of reproductive organs, namely the testes.

It shows that the Kebara 2 hyoid doesn't just look like those of modern humans - it was used in a very similar way.»

An analysis of a Neanderthal's fossilised hyoid bone - a horseshoe - shaped structure in the neck - suggests the species had the ability to speak.

He said that the current study brought more weight to the conclusions that Neanderthals had very similar hyoid bones to us, «not only in form but also in what concerns their mechanical properties».

Much older hyoid fossils have also recently been discovered, attributed to the human and Neanderthal relative Homo heidelbergensis.

Snow leopards have a soft hyoid bone and are sometimes classified under «big cats,» but they do not roar.

Which means that males with smaller hyoids had to come up with another strategy.

If your chin and hyoid bone are jutting forward or your head is tilting back, your entire core — internal structures such as your organs — will push forward into your abdominal wall.

This has been suspected since the 1989 discovery of a Neanderthal hyoid that looks just like a modern human's.

The baby may have difficulty: opening his mouth widely enough to latch deeply because the tight frenulum is pulling on the hyoid bone in the neck that supports the root of the tongue, which in turn pulls the jaw muscles.

So don't go clicking that pop - up ad that promises to enlarge your hyoid.

The bigger the hyoid, the deeper the howl.

And now we know that the quality of the howl depends on a bone near their throats called the hyoid.

Lucy could not speak the way we do, because she most likely had air sacs, balloon - shaped organs that attach to an extension of the hyoid bone, says Bart de Boer, an expert in the evolution of speech at Vrije University in Brussels.

«Lucy's baby», an Australopithecus afarensis girl who lived 3.3 million years ago, had a hyoid bulla; but by the time Homo heidelbergensis arrived on the scene 600,000 years ago, air sacs were a thing of the past.

Palaeontologists can date when our ancestors lost the organ, as the tissue attaches to a skeletal feature called the hyoid bulla, which is absent in humans.

Thus, species in which the males congregate into larger groups had smaller hyoids and larger testes, whereas species living in groups with just a single male had larger hyoids and smaller testes.

The researchers found that, as expected, there was a linear correlation between the size of a species's hyoid and the so - called «formant spacing» of its calls, a measure of the deepness and resonance of the vocalizations; so having a big hyoid generally means producing louder roars.

But as they report online today in Current Biology, there is a clear inverse linear relationship between the size of a monkey's hyoid and the size of his testes.

The best measure of larynx size is the hyoid, a U-shaped bone that supports the tongue and larynx; its size varies from only 8 cubic centimeters in some species to 110 cubic centimeters — 14 times larger — in others.

For the new data, the group used laser surface scanning to produce 3D models of the hyoids.

Along with collecting data on the average testes size across howler species, the researchers also used 3 - D laser scans to analyse the size of over 250 hyoids — finding a ten-fold variation from the smallest to the largest howler throat bone.

«The vocal folds of a howler monkey are three times longer than a human's, yet they are ten times smaller than us, with a hyoid bone uniquely adapted to resonate sound and exaggerate their size,» said Dunn.

Furthermore, the motion of a bone in the fishes» throat, known as the hyoid, closely resembles that of other terrestrial animals, especially newts, which use true tongues to eat.

It has been shown, however, that the sound generated at the source can exhibit harmonic overtones (Beckers et al., 2003) and that cyclical movements of the hyoid skeleton or expansion of the cervical esophagus filter these out of the signal by tuning the oropharyngeal — esophageal cavity (OEC) to the fundamental frequency of the song (Riede et al., 2004; Riede et al., 2006; Riede and Suthers, 2009).

The hyoid bone is crucial for speaking as it supports the root of the tongue.

PLOS ONE Micro-Biomechanics of the Kebara 2 Hyoid and Its Implications for Speech in Neanderthals

This model allowed the group to see how the hyoid behaved in relation to the other surrounding bones.

The larynx is suspended from the hyoid bone; the hyoid bone is anterior to vertabra C3 and the larynx occupies space in the throat anterior to vertebrae C4 — C6.

Drawing your hyoid back allows your core to lift up into your back body, stabilizing your yoga pose.

The hyoid bone is the human version of the wishbone.

Draw your hyoid bone back so that the back of your neck lengthens.

Remember your hyoid bone.

When you draw your hyoid back, lengthening the back of your neck and lifting the base of your skull, your organs and abdominal wall draw back giving frontal support to your spine.

In addition, it builds core strength, especially if you engage a funny little structure called the hyoid bone while you practice it.

If you know where your hyoid bone is — at the base of your throat, above the thyroid cartilage — draw your hyoid back into your throat.

The ability to roar was thought to have been made possible by a «soft» hyoid bone (the bones supporting the larynx).

The ligament that connects the hyoid bones in house cats is rigid.