neural plate

plate (plāt)

1. a flat structure or layer, as a thin layer of bone.

2. dental p.

3. to apply a culture medium to a Petri dish.

4. to inoculate such a plate with bacteria.

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bite plate  biteplate.

bone plate  a metal bar with perforations for the insertion of screws, used to immobilize fractured segments.

cribriform plate  fascia cribrosa.

dental plate  a plate of acrylic resin, metal, or other material, which is fitted to the shape of the mouth and serves to support artificial teeth.

dorsal plate  roof p.

epiphyseal plate  the thin plate of cartilage between the epiphysis and the metaphysis of a growing long bone.

equatorial plate  the collection of chromosomes at the equator of the spindle in mitosis.

floor plate  the unpaired ventral longitudinal zone of the neural tube.

foot plate 

1. see footplate.

2. the embryonic precursor of a foot.

growth plate  epiphyseal p.

hand plate  a flattened expansion at the end of the embryonic limb; the precursor of the hand.

medullary plate  neural p.

motor end plate  end plate.

muscle plate  myotome (2).

nail plate  nail (1).

neural plate  the thickened plate of ectoderm in the embryo that develops into the neural tube.

roof plate  the unpaired dorsal longitudinal zone of the neural tube.

tarsal plate  tarsus (2).

tympanic plate  the bony plate forming the floor and sides of the meatus auditorius.

ventral plate  floor p.

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neural plate

n.

The thickened dorsal plate of ectoderm that differentiates into the neural tube and neural crest. Also called medullary plate.

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neural plate,

a thick layer of ectodermal tissue that lies along the central longitudinal axis of the early developing embryo and gives rise to the neural tube and subsequently to the brain, spinal cord, and other tissues of the central nervous system. Also called medullary plate. See also neural tube formation.

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plate [plāt]

1. a flat stratum or layer.

2. dental plate; sometimes, by extension, incorrectly used to designate a complete denture.

3. a flat vessel, usually a petri dish, containing sterile solid medium for the culture of microorganisms.

4. to prepare a culture medium in a petri dish, or to inoculate such a medium with a bacterial culture.

axial plate primitive streak.

bite plate biteplate.

cortical plate a layer of compact bone overlying the spongiosa of the alveolar process on the vestibular and oral aspects of the mandible and maxilla.

deck plate roof plate.

dental plate a plate of acrylic resin, metal, or other material that is fitted to the shape of the mouth, and serves for the support of artificial teeth.

dorsal plate roof plate.

end plate see end plate.

epiphyseal plate the thin plate of cartilage between the epiphysis and the shaft of a long bone; it is the site of growth in length and is obliterated by epiphyseal closure.

equatorial plate the collection of chromosomes at the equator of the spindle in mitosis.

floor plate the unpaired ventral longitudinal zone of the neural tube; called also ventral plate.

foot plate footplate.

force plate force platform.

medullary plate neural plate.

muscle plate myotome (def. 2).

neural plate a thickened band of ectoderm in the midbody region of the developing embryo, which develops into the neural tube; called also medullary plate.

roof plate the unpaired dorsal longitudinal zone of the neural tube; called also dorsal plate and deck plate.

tarsal plate tarsus (def. 2).

ventral plate floor plate.

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neural

pertaining to a nerve or to the nerves.

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neural crest cells

a group of neuroepithelial cells which condenses dorsal to the neural tube in the embryo; they subsequently migrate and set up dorsal root ganglia, the ganglia of the autonomic nervous system, and the pigment cells of the integument (melanocytes).

neural folds

in the embryo, the sides of the invaginated neural plate that meet and fuse over the neural groove to form the neural tube.

neural groove

the longitudinal furrow in the neural plate of the embryo.

neural lymphomatosis

see marek's disease.

neural plate

the thickened ectoderm dorsal to the notochord in the embryo that gives rise to the neural tube.

neural retina

separated from the outer layer of the optic retina by the intraretinal space; constitutes the pars optica retinae, with its neuroepithelial layer (contains rods and cones—the receptor cells), bipolar ganglion layer, multipolar ganglion layer, and a layer of axons of the latter layer. Light must pass through the latter three layers before reaching the receptor cells.

neural substrates

functional units of the central nervous system, often composed of a series of structural units which may be widely separated anatomically but which interact to support or drive complex nervous system functions, such as hunger and sleepiness. They are the counterparts of simple centers, e.g. the respiratory center, which control simple physiological mechanisms.

neural tropic influence

the tropic influence of nerves on, for example, muscle, demonstrated by the atrophy of muscle when it is denervated.

neural tube

the precursor of the central nervous system in the embryo, formed by invagination and fusion of the neural plate.

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plate

1. a flat structure or layer, as a flat layer of bone.

2. used as a fracture repair medium, including compression plates.

3. to apply a culture medium to a glass plate.

4. to cultivate bacteria on such plates.

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axial plate

the primitive streak of the embryo.

basal plate

primordial ventral horn of the spinal cord.

plate bender

a strong crimping device for manually bending a plate for a tricky bit of orthopedic repair.

buttress plate (2)

a metal plate used in fracture repair to bridge and support a diaphyseal gap filled with a cancellous bone graft.

cloacal plate

blind ending of the hindgut in the embryo.

cribriform plate

a sievelike partition between the cranial and nasal cavities. The posterior surface is divided by the vertical ethmoidal crest into two concave surfaces which contain the olfactory bulbs. It contains many small perforations through which the filaments of the olfactory nerves pass.

deck plate

see roof plate.

dorsal plate

see roof plate.

equatorial plate

the collection of chromosomes at the equator of the spindle in mitosis.

floor plate

the unpaired ventral longitudinal zone of the neural tube; called also ventral plate.

foot plate

the flat portion of the stapes.

medullary plate

neural plate.

muscle plate

myotome (2).

nasal plate

region of modified skin around the nostrils in the embryonic carnivore or small ruminant.

nasolabial plate

region of modified skin around the nostrils in the embryo of cattle.

neural plate

a thickened band of ectoderm in the midbody region of the developing embryo, which develops into the neural tube; called also medullary plate.

neutralization plate (2)

a bone plate placed to protect against the forces acting on the fracture site.

orthopedic bone plate

a metal plate screwed to the two fragments of a fractured bone to provide fixation and permit healing in correct alignment.

roof plate

the unpaired dorsal longitudinal zone of the neural tube; called also dorsal plate and deck plate.

rostral plate

region of modified skin around the nostrils in the porcine embryo.

sole plate

a mass of protoplasm in which a motor nerve ending is embedded.

spinal plate

metal or plastic plates may used to stabilize thoracolumbar or lumbar spinal fractures. With one plate on each side of a row of dorsal spinal processes, they are bolted together in the spaces between processes.

tarsal plate

one of the plates of connective tissue forming the framework of either (upper or lower) eyelid.

tectorial plate

the roof of the ethmoidal labyrinth of the internal ear.

tension band plate (2)

a bone plate placed on the tension side of a fracture and which counteracts tensile forces, converting them into compression forces at the fracture site.

ventral plate

floor plate.