Basal Plate


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Basal Plate

 

(1) An elastic, unstructured plate situated under the single-layer surface epithelium in some groups of invertebrates (ciliated worms, nemerteans), Hemichordata (Balanoglossus), and Cephalochorda (lancelets). It is formed from the secretions of epithelial cells. It separates the epithelium from the underlying musculature or connective tissue and serves as an attachment for muscles.

(2) In hydroid polyps, the basal plate (corresponds to the mesoglea in medusae) is a delicate unstructured plate lying between the ectoderm and endoderm.

References in periodicals archive ?
In the total PCR positive plants obtained, highest frequency of transgenic plants was contributed by mature embryos followed by seeds and basal plates. None of positive transgenic plant was obtained from shoot tips, root tips and leaf blades in the transformation experiments performed.
Increased expression of RLN gene and protein has been demonstrated in the PAS basal plate, while the receptor RFXP1 is overexpressed in both the basal plate and villous trophoblast in PAS specimens compared to controls suggesting that PAS may produce a number of autocrine and paracrine factors that promote the upregulation of angiogenic-stimulating factors combined with a suppression in antiangiogenic factors leading to extensive neovascularisation [25].
The ctenii lie close to each other at the scale basal plate and do not separate even if there is a shallow slit between the ctenial and scale base (e.g.
In the basal plate the majority of decidual cells are destroyed.
This last one cartilage doesn't contact the basal plate. The taenia marginalis extends between the pila accessoria and the dorsal surface of the otic capsule.
The marked indentations of the chorionic plate do not reach the basal plate, which is well defined by small linear highly reflective areas.
Be sure to include a portion of the basal plate with each section (Fig.
When scaling lily bulbs, it is best to take the outside scales, with as much of the basal plate as possible.
When buying a hippeastrum bulb, check that it is firm and undamaged,and that the basal plate bearing the thong-like roots is intact.
When buying a hippeastrum bulb, check that it is firm and undamaged, and that the basal plate bearing the thong-like roots is intact.