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Related to branchial arch: branchial arch derivatives
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Bigelow & Schroeder 1948:150) estimated the number of gill rakers in one series on one branchial arch to be 1260.
Similarly, there is an apparent modal difference in the total number of gill rakers on the first branchial arch between A.
Distinguished from all other congeners by the combination of the following features: anterior portion of trunk slightly deeper than wide, jaws slightly elongated, snout pointed, tip of anal fin slightly pointed in male, caudal fin rounded in male, pelvic-fin tip reaching anterior portion of anal-fin base in male, dorsal-fin origin on vertical between base of penultimate and last anal-fin ray, dorsal-fin rays 7-9, anal-fin rays 13-15, frontal squamation E or D-patterned, frontal scales arranged circularly, canal preopercular short and opened, contact organs on flank scales in male, longitudinal series of scales 40-45, gill rakers of first branchial arch 2 + 10, pink stripes on flank, jaws not distinctively pigmented, and round black spot on dorsal portion of caudal fin in female.
The embryologic migration pattern of the second branchial arch tract originates in the tonsillar fossa, travels over third arch structures, and terminates in the middle to lower two-thirds of the lateral portion of the neck.
The orientation of teeth changes along these gill-raker tubercles, being curved towards the middle of the pharyngeal cavity in the upper part of the crown and directed at right angles to the surface of the branchial arch closer to the base.
There is also a possible difference in the number of gill rakers on the first branchial arch.
9) Our patient satisfied three major criteria: coexisting first and second branchial arch anomalies and deafness.
4-6) After fusion of the maxillary and mandibular processes, which are both derived from the first branchial arch, the parotid duct takes its normal position inside the mouth at the level of the superior second molar.
6-8,21 Exophytic masses within the oropharynx that are of branchial arch origin are very rare, with few cases reported in the literature.