A pair of thyrohyals, homologous with the posterior hyoid horns of mammals, i.
As the most developed pair in birds they are commonly, although wrongly, called the hyoid horns.
The Hyoid apparatus is, in its detail, subject to many variations in accord with the very diverse uses to which the tongue of birds is put.
Now the nine millions of human creatures which we here refer to present at first sight all the attributes of the human race; they have the hyoid bone, the coracoid process, the acromion, the zygomatic arch.
Nature has decreed that they should have coracoid processes and hyoid bones and thirty-two vertebrae, let them remain for the physiologist classed with the ourang-outang.
The tongue was missing for about one-third its length, and was thicker than natural and retracted on the hyoid bone.
Bramann reported a case in which a dermoid cyst of small size was situated over the sternum at the junction of the manubrium with the gladiolus, and a similar cyst in the neck near the left cornu of the hyoid bone.
The inferior parts of the cheeks were cicatrized with the lateral and superior regions of the neck, and with the base of the tongue and the hyoid bone.
Defn: Of or pertaining to the chin and hyoid bone; as, the geniohyoid muscle.
Between the hyoidbone and the sternum, or pertaining to them; infrahyoid; as, the hyosternal region of the neck.
Defn: an organ situated in the floor of the mouth of most vertebrates and connected with the hyoid arch.
Defn: Of or pertaining to the thyroid cartilage of the larynx and the hyoid arch.
Defn: Pertaining to, or in the region of, the lower jaw and the hyoid apparatus; as, the mylohyoid nerve.
Defn: Pertaining both to the hyoidean arch and the mandible or lower jaw; as, the hyomandibular bone or cartilage, a segment of the hyoid arch which connects the lower jaw with the skull in fishes.
Defn: Pertaining both to the mandibular and the hyoid arch, or situated between them.
Defn: The expanded upper end of the windpipe or trachea, connected with the hyoid bone or cartilage.
Defn: A flat muscle on either side of the tongue, connecting it with the hyoid bone.
Defn: Of or pertaining to the sternum and the hyoid bone or cartilage.
Defn: Pertaining to petrous, oe periotic, portion of the skull and the hyoid arch; as, the petrohyoid muscles of the frog.
Defn: Of or pertaining to the styloid process and the hyoid bone.
In the Lewis's woodpecker and others of his genus the branches of the hyoid extend part-way up the back of the skull but in the kinds that live principally upon borers they are very long and resemble the flicker's in arrangement.
It runs forwards on the under surface of the head beneath the mylo-hyoid muscle and supplies the tongue.
The mylo-hyoid muscle, on the underside of the mouth region.
Remove the mylo-hyoid muscles to expose the hyoid apparatus.
The expanded upper end of the windpipe or trachea, connected with the hyoidbone or cartilage.
In size, the hyoid of both species of Baiomys resembles that in Reithrodontomys.
Internal structures such as hyoid apparatus, auditory ossicles, and baculum remained almost unchanged, as for example in Calomys now living in South America.
Shape and, to a lesser extent, size of the hyoid apparatus differentiate nearly all specimens of B.
The dorsal end of the part of the hyoid separated from the incus becomes ossified as the tympano-hyal, and is anchylosed with the adjacent parts of the periotic capsule.
In all the higher Vertebrata the thyroid body arises as a diverticulum of the ventral wall of the throat in the region either of the mandibular or hyoid arches (fig.
The posterior (thyroid) cornua of the hyoid are remnants of the true arches.
The middle part of the bar just outside the skull forms the stylohyal (styloid process in Man) which is attached by ligament to the anterior cornu of the hyoid (ceratohyal).
The oral region is bounded behind by a well-marked mandibular arch, which is separated by a shallow depression from a still more prominent hyoid arch (fig.
The mandibular arch (md) is placed on the hinder border of the mouth, and is separated by a deep groove from the hyoid arch (hy).
Man two ventral continuations of the truncus arteriosus, one derived from the mandibular artery, forming the external maxillary artery, and one from the hyoid artery, forming the lingual artery.
Both the hyoid and mandibular arches develop at first more completely than in any of the other types above Fishes; and are articulated to each other above, while the pterygo-palatine bar is quite distinct.
In Scyllium the hyoid and mandibular arches are at first very similar to those which follow.
A flat muscle on either side of the tongue, connecting it with the hyoid bone.
The third arch takes a varying share, together with the second, in the formation of the hyoid apparatus.
From the hinder edge of the hyoid arch grows out the membranous operculum, in which develop later the opercular bones and branchiostegal rays.
In developing Amphibia Huxley found a suspensorium of hyoid and mandibular arches similar to the hyomandibular of fish.
Geoffroy's next step is to point out that the only possible homologues of sternal ribs are the branchiostegal rays, which arise from the large bones of the hyoid arch.
Rathke's discoveries relative to the development of the jaws, the hyoid and the operculum, enabled him to make short work of the homologies proposed for them by the transcendentalists.
The hyoid is at first connected with the skull, but afterwards frees itself and becomes slung to the "quadrate.
He finds the representatives of other bones of the sternum in the large bones (epihyal and ceratohyal, or the two pieces of the ceratohyal) which are comprised in the hyoid arch.
He could even, as we have noted before, find the homologue of the operculum in a flap which grows out from the hyoid arch in the embryo of birds.
In the same way the hyoid apparatus is part and parcel of the parietal vertebra, and the pectoral girdle and fore-limbs part of the occipital vertebra.
He could reject, with a mere reference to the facts of development, Geoffroy's comparison of the hyoid and the branchiostegal rays in fish with sternum and ribs.
Part of thehyoid musculature in these same groups of chipmunks was dissected.
The hyoid apparatus in the chipmunks is made up of an arched basihyal with a thyrohyal attached to each limb of this "arch.
Ventral views of the hyoid apparatus in Tamias and Eutamias.
Mallei and hyoidbones of the genera and subgenera of the chipmunks were mostly studied in the dry state.
The principal differences between the Alaska and Eastern trout are, first, all Alaskans have hyoid teeth, the eastern trout have not.
In the skull and teeth there is nothing very noteworthy, but the hyoid is remarkable.
The muscles in relation to the trachea are the sterno-hyoid and sterno-thyroid of each side.
The sterno-hyoid and thyroid muscles will then require similar division.
This being done, the sterno-hyoid and sterno-thyroid muscles require division immediately above their sternal attachments.
Easy as it appears and really is, cases are on record in which the thyro-hyoid space has been opened instead of the crico-thyroid, such operations being of course perfectly useless.
The anterior border of the sterno-mastoid must be pulled backwards, and the digastric and stylo-hyoid forwards and inwards.
There are also large hooked teeth on the hyoid bone, and the teeth generally are proportionately stronger than in most of the other species.
There are no teeth on thehyoid bone, traces at least of such teeth being found in nearly all other species.
Its mouth is proportionately larger, and there is always a narrow band of small teeth on the hyoid bone at the base of the tongue.
To supplement this insufficient branchial apparatus, a lung-like sac is developed on each side of the body behind the head, opening between the hyoid and the first branchial arch.
The hyoid apparatus is reduced to a pair of cartilaginous filaments situated below the trachea, and united in front.
The mammalian skull is very firm and rigid, all the bones composing it, excepting the lower jaw, the tiny auditory ossicles, and the slender bones of the hyoid arch, being immovably articulated together.
Note the U-shaped hyoid bone surrounding the front of the glottis.
The first or hyomandibular pouch, placed between the mandibular and hyoid arches, has rather the character of a double layer of hypoblast than of a true pouch, though in parts a slight space is developed between its two walls.
It is well known that Lepidosteus is provided with a gill on the hyoid arch, divided on each side into two parts.
A dorsal dilated portion appears, however, to be present in the third or hyoid section alone, and even there disappears by the close of stage K.
Mueller's views on this subject have not usually been accepted, but it is the fashion to regard the whole of the gill as the hyoid gill divided into two parts.
It appeared to us not improbable that embryology might throw some light on the history of this gill, and accordingly we kept a look out in our embryos for traces of gills on the hyoid and mandibular arches.
Behind this is placed the very conspicuous hyoid arch with its rudimentary opercular flap; and in the depression, partly covered over by the latter, may be seen a ridge, the external indication of the first branchial arch.
In the Bird Dr Mueller's figures shew that the thyroid body develops in the region of the hyoid arch, whereas, in Elasmobranchii, it develops in the region of the mandibular arch.
Large air-sacs are also present, and the hyoidbone is excavated posteriorly, suggesting the conformation of the same bone in Alouatta (the South American Howlers).
Throat-pouch situated in an excavated hollow in the hyoid bone, the pouch being continuous with the convergence of the vocal chords.
The large laryngeal sac, communicating by two openings with the larynx, and formed by the extension of the thyro-hyoid membrane, distinguishes this from all the other Gibbons.
Wide gagging prevents proper exposure of the larynx by forcing the mandible down on the hyoid bone.
The motion is imparted to the tip of the laryngoscope as if to lift the patient by his hyoid hone.
Elevation of the epiglottis and all the tissues attached to the hyoid bone, so as to expose the larynx to direct view.
At this same moment or the instant before, the hyoid bone is given a quick additional lift with the tip of the laryngoscope.
Exposure of the larynx is accomplished by pulling forward the epiglottis and the tissues attached to the hyoid bone, and not by prying these tissues forward with the upper teeth as a fulcrum.
The larynx is now exposed by a motion that is best described as a suspension of the head and all the structures attached to the hyoid bone on the tip of the spatular end of the laryngoscope (Fig.
THE UNDER JAW The under jaw furnishes attachment for the muscles of the tongue and hyoid or tongue bone.
It also controls, owing to the connections of the larynx with the hyoid bone, the muscles that fix the position of the larynx.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "hyoid" in a variety of sentences. We hope that you will now be able to make sentences using this word.
