gill arch


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Related to gill arch: Gill raker

gill arch

 (gĭl)
n.
1. One of several bony or cartilaginous arches located on either side of the pharynx and supporting the gills in fish and amphibians.
2. Embryology One of several corresponding arches in the embryo of a bird, reptile, or mammal that develop into structures of the ear and neck. In both senses also called branchial arch, pharyngeal arch.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gill arch - one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibiansgill arch - one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
References in periodicals archive ?
They have reported some specificity for particular areas of attachment of these parasites by arbitrarily dividing each gill arch into several regions.
He discovered that the gill rakers of sardine specimens (Clupeiformes: Clupeidae: Sardina) began to form on the gill arch when the larva was about 20 mm long.
The degeneration and necrosis were also observed within the gill filaments along with a dilation of the gill arch in which it expands as compared to its normal condition as shown in Figure 1C.
Miyake T, McEachran JD (1991) The morphology and evolution of the ventral gill arch skeleton in batoid fishes (Chondrichthyes: Batoidea).
The development of the jaw is carried out by multiple processes which include the formation of its skeletal elements, which are derived from cells of the CNC of the first gill arch.
The count of scales in longitudinal series is made from above the dorsal end of the gill opening to the base of the caudal fin; scales in transverse series are counted from the origin of the anal fin anterodor-sally to the base of the first dorsal fin; gill rakers are counted on the first gill arch, those on the upper limb listed first; rudiments are included in the counts.
evermanni: 1st gill arch 2-3+9-11, 2nd gill arch 1+6-9; A.
The distance between the gill rakers of the first gill arch, the distance between the spines of the fourth gill arch, the number of gill rakers per gill arch and the number of spines per gill raker did not show homogeneous variances and were analyzed with a Kruskal-Wallis ANOVA followed by a multiple comparisons test of means by ranks.