Could it be that the parathyroid is also derived from a branchial arch, and is therefore homologous with the gills of fish? |
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The branchial arches begin as cylindrical cores of mesenchyme sandwiched between continuous sheets of epidermal ectoderm and internal endoderm. |
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The lenticular process is actually derived from mesenchyme attributed to the second branchial. |
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The branchial basket was braced against the body wall and unjointed, as in lampreys. |
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Janvier agrees that gills, and perhaps the external branchial skeleton, are primitive to the chordates. |
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Due to the reduction of the hyoid and branchial arches, no other means than the suction flow seems to be available for this function. |
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The inner surface of the right operclc can be observed, and also some branchial arch elements such as the ceratobranchial and hypobranchial. |
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In fish, the branchial apparatus forms a system of gills for exchanging oxygen and carbon dioxide between the blood and the water. |
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The ventral branchial arch segments of placoderms are so poorly known that nothing useful can be said. |
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Unionicolid mites and monogenean trematodes are often found feeding upon the mantle and branchial tissue. |
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Six cases of false positive patients were reported: 2 acinic cells carcinomas, 2 pleomorphic adenomas, 1 dermoïd cyst, 1 branchial cyst. |
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The larva probably possessed the scraping mouth parts and the branchial filter seen in most extant anuran larvae, and likewise probably also pumped water rhythmically. |
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For the past few years, the near-consensus has been that basal craniates had gills that were supported by a branchial basket, if they were supported at all. |
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Thus, each of the branchial arches, the arches which actually function as respiratory arches in fishes, has an epibranchial and a ceratobranchial. |
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The history of the epibranchials presumably begins wherever vertebrates first developed a jointed, internal branchial arch rather than an unjointed, external branchial basket. |
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Liparid snailfish in the genus Careproctus extrude eggs through an anteriorly positioned ovipositor into the branchial chambers of large lithodid crabs. |
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Numerous small pustules occur on surface of branchial regions. |
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The electrical organs consist of modified branchial muscle tissues which are highly modified to serve as electrocytes, miniature organic batteries. |
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Dermal inclusion cysts are derived from ectodermic elements entrapped during the midline fusion of the first and second branchial arches. |
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Discussed in this article as part of the axial skeleton is a third subdivision, the visceral, comprising the lower jaw, some elements of the upper jaw, and the branchial arches, including the hyoid bone. |
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In Nautilus this vena cava gives off at the level of the gills four branchial advehent veins, which pass into the four gills without dilating. |
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The first 3 tubercles are first branchial arch derivatives and form the tragus, helical crus, and helix. |
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The anterior two thirds originate from paired lateral lingual swellings, which are contributed by first branchial arch. |
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Energetic cost of branchial ventilation in sharksucker, Echeneis naucrates. |
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Tubercles 4 through 6 arise from the second branchial arch and form the antihelix, antitragus, and lobule. |
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Firm proteinaceous rods also may support the branchial apparatus. |
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The restructuring of the posterior jaw in mammals leads to the further replacement of this new muscle by the digastric, which is a compound muscle made up of parts of the constrictors of the first and second branchial arches. |
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The 2 lesions that first come to mind in the differential diagnosis of a solitary cystic lesion in the neck are thyroglossal duct cyst and branchial cleft cyst. |
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The branchial horn I is curved dorsomedially and is longer than branchial horn II, which is the only element of the hyoid apparatus that ossifies. |
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The effects of the adrenoreceptor agonist phenylephrine and isoproterenol on the intracellular ion concentration of branchial ephitelial cells of brown trout. |
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Lesions may resemble a pyogenic granuloma, actinomycosis, a thyroglossal duct cyst, a branchial cleft cyst, a furuncle, a squamous cell carcinoma and an epidermal cyst. |
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Marsupialization and iodine sclerotherapy of a branchial cyst in a horse. |
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The locations in which the gill lice attached to the host fish varied, but the majority were found attached to gills, branchial rims, and opercula. |
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