Lateral Plates

Lateral Plates

 

paired structures originating in the course of embryonic development in all chordates during the separation of the middle germ layer. The lateral plates consist of two sheets: outer (parietal), adjacent to the body wall, and inner (visceral), adjacent to the intestinal wall. A secondary body cavity or coelom develops between them. The serous membranes, smooth muscles, mesenchyma, blood vessels, heart, and mesentery are derived from the lateral plates during embryonic development.

References in periodicals archive ?
The main time-saving features are associated with the new bolted base, as this can be fixed to the sub frame, thereby avoiding lateral plates.
Over the past 15,000 years, freshwater sticklebacks have lost their bony lateral plates, or "armour," in these new environments.
The bed is made of three closed frames made of steel sheet, stiffened with members and lateral plates with two windows for the blocking unit and tensioning unit.
the stand, consisting of two closed frames made of steel sheet of 80 mm thickness stiffened by two lateral plates with a thickness of 20 mm.
Pleon of six pleomeres, all shorter than pereomeres, and all of about same length, progressively narrower posteriorly; first five produced into long lanceolate lateral plates on both sides, most directed posteriorly; final pleomere produced into similar long posterolaterally directed uropods.
Pleon nearly straight across posterior margin, of six pleomeres, first five produced into extended lateral plates, sixth as small embedded pleotelson; five pairs of biramous pleopods, exopodites of first three greatly expanded; no uropods.
The female has the epigynal lateral plates curved on the inner edge; the septum is thinner in its upper part and wider below, rounded in the middle and square at the end (Fig.
Epigynum with the common structure in the genus, two lateral plates and a median plate or septum.
For extra strength and resistance to impact and fatigue, we've optimized the suspension's slider with integrated lateral plates and we've protected the pin mechanism with additional cross members," said Jim Sharkey, business unit director, North American Trailer Systems, for ArvinMeritor.
The base of female epigynum has variable sclerotizations of the lateral plates, although the basic pattern is typically that of Pardosinae.
Epigynum: narrow, soft median septum between lateral plates continued as a soft basal transverse bar; median septum inverted-T shaped; posterior basal transverse bar with slightly curved lateral arms.

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