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a plate, composed of a layer of cloacal endoderm in contact with a layer of anal (proctodeal) ectoderm, which subsequently becomes the cloacal membrane and ruptures, forming the anal and urogenital openings of the embryo.
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.