myomere


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Related to myomere: lateral line

myomere

[′mī·ə‚mir]
(embryology)
A muscle segment differentiated from the myotome, which divides to form the epimere and hypomere.
References in periodicals archive ?
Pigmentation patterns, counts of myomeres, head spines, and fin rays, and various measurements were recorded.
Taxonomic questions: Trunk myomere counts have been used to distinguish species of lampreys (Table 1).
The distribution is not symmetrical between left and right sides; they are separated by 1 to 4 myomeres in dorsal view.
Whenever possible, the number of myomeres, spines, and rays of dorsal, anal, caudal, pectoral, and pelvic fins were recorded.
The myomere had a beige coloration going from the posterior cephalic region to the beginning of the tail.
On the other hand, it is well known that in lancelets motor neurons supplying myomeres and chordal cells, the latter of which have myofibrils, do not exit the CNS; instead they make synapses with cell processes that extend from muscle or chordal cells at the basement membrane surrounding the CNS (Platt, 1892; Flood, 1966; Yasui et al.
These PVMs are spaced at approximately one per myomere and stop just beyond the pigment band at 75% SL.
The majority of larvae had higher myomere counts (37-42) than Icelus (35-36) and a different pelvic-fin count (1, 3) than I.
The internal dorsolateral series began just anterior to the anus and was spaced regularly with about one melanophore per myomere until termination at a point even with the dorsal midline series.
Generally there is one PVM per myomere but in many individuals one or more are missing from the row.
Myomere and fin-ray counts and morphometric measurements were made on the left side of the body.