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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.
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.
the neuroectodermal region of the early embryo's dorsal surface that in later development is transformed into the neural tube and neural crest.
Synonym(s): medullary plate
A thickened plate of dorsal ectoderm that differentiates into the neural tube and neural crest.
neu·ral plate(nūr'ăl plāt)
The unpaired neuroectodermal region on the dorsal surface of the early embryo that becomes the neural tube and neural crest.
Synonym(s): medullary plate.
Synonym(s): medullary plate.
neural platethat part of the ectoderm which sinks below the surface of the developing vertebrate embryo and forms the spinal cord.
pertaining to a nerve or to the nerves.
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).
in the embryo, the sides of the invaginated neural plate that meet and fuse over the neural groove to form the neural tube.
the longitudinal furrow in the neural plate of the embryo.
see marek's disease.
the thickened ectoderm dorsal to the notochord in the embryo that gives rise to the neural tube.
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.
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.
the precursor of the central nervous system in the embryo, formed by invagination and fusion of the neural 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.
the primitive streak of the embryo.
primordial ventral horn of the spinal cord.
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.
blind ending of the hindgut in the embryo.
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.
see roof plate.
see roof plate.
the collection of chromosomes at the equator of the spindle in mitosis.
the unpaired ventral longitudinal zone of the neural tube; called also ventral plate.
the flat portion of the stapes.
region of modified skin around the nostrils in the embryonic carnivore or small ruminant.
region of modified skin around the nostrils in the embryo of cattle.
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.
the unpaired dorsal longitudinal zone of the neural tube; called also dorsal plate and deck plate.
region of modified skin around the nostrils in the porcine embryo.
a mass of protoplasm in which a motor nerve ending is embedded.
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.
one of the plates of connective tissue forming the framework of either (upper or lower) eyelid.
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.