myotome

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Related to myomere: lateral line

my·o·tome

 (mī′ə-tōm′)
n.
1. A segmental mass of mesoderm in a vertebrate embryo that differentiates into skeletal muscle.
2. A muscle or group of muscles derived from one somite and innervated by a single segment of a spinal nerve.
3. A knife for dividing muscle during surgery.

myotome

(ˈmaɪəˌtəʊm)
n
1. (Zoology) any segment of embryonic mesoderm that develops into skeletal muscle in the adult
2. (Zoology) any of the segmentally arranged blocks of muscle in lower vertebrates such as fishes
References in periodicals archive ?
During the preflexion stage, a single row of 8-14 melanophores (mean: 11), usually elongate, extends from myomeres 10-11 to 20-24 (modal number: 10-21), at a spacing of about one melanophore per myomere, and appears as an almost continuous line of pigment.
Trunk myomeres were counted from the myomere partly containing the most posterior gill opening to the last myomere with posterior angle positioned above the cloaca (Hubbs & Trautman 1937).
2010) described a new Tenpo under, Elops smithi, distinguishable morphologically only by myomere (larvae) or vertebral (adults) counts from Elops saurus; E.
0 mm TL, had a large yolk sac, and displayed pigment along myomere edges (Fig.
On the trunk, the new neuromasts appear in middle intervening positions with respect to the initial ones; they also tend to form at different myomere level on both sides (Fig.
Line of pigment on ventral body margin from 4th to 6th myomeres posterior to anus to penultimate posterior myomere.
For RNA preparation, we collected tadpole tail tissue by removing it at the fifth myomere and immediately stored the tissue in the RNA preservative RNAlater (Ambion Inc.
Larvae had 23-26 myomeres (mode: 25 myomeres), 7-12 preanal and 13-18 postanal; the myomere formula did not change with development.
The larval mouth has been thought to develop in the first mesodermal domain (van Wijhe, 1906; Franz, 1927) and expands up to the region of the eighth myomere, though it does not cross over the myomere domain.
A small group of spots is present on the ventral body margin near the last 2 or 3 myomeres and an additional 3 or 4 spots are located along the ventral margin of the notochord beyond the last myomere.
Dense xanthophores are present on the ventral finfold edge from the anal pore to the last myomere, forming a distinct yellow edge.