lateral palatine processes

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lateral palatine processes

a medially directed outgrowth of the embryonic maxilla; when fused with its opposite number it forms the secondary palate.

lat·er·al pal·a·tine pro·ces·ses

(latĕr-ăl pală-tīn proses)
Medially directed outgrowth of embryonic maxilla; when fused with its opposite number forms the secondary palate.
Synonym(s): palatal shelves.


1. denoting a position farther from the median plane or midline of the body or a structure; the side or outside.
2. pertaining to a side.

lateral aids
used by the rider to move a horse sideways; pressure by the neck rein and the thigh and calf on the same side at the same time.
lateral body folds
folds which commence at the head, then at the tail eventually meeting at the umbilicus; the folds gradually separate the embryo from the extraembryonic tissues.
lateral collateral ligament
lateral ligaments of many joints, e.g. the femorotibial articulation.
lateral decubitus
lateral recumbency.
lateral geniculate nucleus
a terminal and relay station for optical nerve fibers within the thalamus, beneath the lateral geniculate body.
lateral mesoderm
or lateral plate mesoderm; mesoderm which extends (a) around the embryonal gut and (b) inside the surface ectoderm to enclose the celom between these splanchnic and parietal layers respectively.
lateral nasal process
a process which borders the nasal pit, eventually the nostril, and which is derived from the embryo's frontonasal mesenchyme.
lateral palatine processes
processes which grow out from the maxillary processes and grow into the oronasal cavity, eventually fusing with each other and the medial palatine process and the nasal septum to form the embryo's hard palate.
References in periodicals archive ?
The effects of epidermal growth factor, transforming growth factors alpha and beta and platelet-derived growth factor on murine palatal shelves in organ culture.
Premaxilla: Usually the premaxilla in Bilateral Group III clefts is much protruded and positioned in relation to the lateral palatal shelves.
Together, these studies, which focused mainly on elevation and fusion of palatal shelves, have highlighted roles of AHR in mesenchyme and epithelium at GD 14.
The medial edge epithelia of the approximating palatal shelves fuse with each other developing cell adhesion molecules and desmosomes to form a midline epithelial seam.
This establish a conductive orofacial environment that permits the expanding palatal shelves to occupy a position above the dorsum of the tongue.
In human embryos palatal shelves elevate simultaneously on day 43 (22-24 mm CRL), and the palate is closed by 55 days (33-37 mm CRL).
The mesenchymal obstruction of the tongue can delay the movement of one or both palatal shelves, so that opportunities for palatal fusion are lost (rev by Poswillo, 1988).
Differentiation of cultured palatal shelves from Alligator, chick, and mouse embryos.