Growth plate

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ep·i·phys·i·al plate

the disk of hyaline cartilage between the metaphysis and the epiphysis of an immature long bone that permits the bone to grow longer.

ep·i·phys·i·al plate

(ep'i-fiz'ē-ăl plāt) [TA]
The disc of cartilage between the metaphysis and the epiphysis of an immature long bone permitting growth in length.
Synonym(s): cartilago epiphysialis [TA] , growth plate.


(plat) [Fr. plate, something flat]
1. A thin, flattened part or portion, such as a flattened process of a bone. Synonym: lamella; lamina
2. An incorrect reference to a full denture.
3. A shallow covered dish for culturing microorganisms.
4. To inoculate and culture microorganisms in a culture plate.

alar plate

In the embryo, the upper (dorsal) half of the neural tube (above the sulcus limitans).
Synonym: alar lamina of neural tube

auditory plate

The bony roof of the external auditory meatus.

axial plate

The primitive streak of the embryo.

belay plate

A metal, steel, or aluminum plate that has one or more slots in it, designed to weave a rope through, to create friction with a carabiner.

bite plate

In dentistry, a plate made of some suitable plastic material into which the patient bites in order to have a record of the relationship between the upper and lower jaws. The device may be reinforced with wire and used as a splint in the mouth or to treat temporomandibular joint difficulties.
Synonym: interocclusal record; occlusal template

bone plate

A flat, round or oval decalcified bone or metal disk, employed in pairs, used in approximation.

chorionic plate

The fetal surface of the placenta.

cortical plate

The compact layers of bone forming the surfaces of the alveolar processes of the mandible and maxilla.

cribriform plate

1. The thin, perforated, medial portion of the horizontal plate of the ethmoid bone; the olfactory foramina are passages for the olfactory nerve.
2. Alveolar bone, the spongy bone that makes up the wall of the socket for a tooth; found in the maxillae and mandible.

deck plate

The roof plate of the embryonic neural tube.

dental plate

An old term for the denture base of metal or acrylic material that rests on the oral mucosa and to which artificial teeth are attached; by extension, incorrectly used to mean the complete denture.

dorsal plate

One of two prominences of the notochord in the embryo.
Enlarge picture

epiphyseal plate

The thin layer of cartilage between the epiphysis and the shaft of a bone. Growth in length of the bone occurs at this layer.
Synonym: growth plate See: illustration

equatorial plate

The platelike mass of chromosomes at the equator of the spindle in cell division.

floor plate

In the embryonic neural tube, the wedge of cells in the ventral midline. These cells are primitive radial glia and do not give rise to neurons. The ventral commissures and decussations eventually develop through this structure. Synonym: ventral plate

force plate

A flat, floor-mounted instrument, similar to a scale, for determining weight-bearing loads and biomechanical forces placed on the foot during walking or running. It is used to detect subtle body movements in order to identify postural deficits, or to develop (in athletes or people with balance disorders) more fluid and safer coordination and locomotion.

growth plate

Epiphyseal plate.

image plate

A photostimulable image detector used in computed tomography in place of x-ray cassettes. It gathers the energy from x-ray photons on a layer of phosphor that can repeatedly store and release information in digitized form for enhancement, recording, and image display.

medullary plate

The central portion of the ectoderm in the embryo developing into the neural canal.

muscle plate

In the somite, the myotome from which the striated muscles are formed.

neural plate

A thickened band of ectoderm along the dorsal surface of an embryo. The nervous system develops from this tissue.

palate plate

The part of the palatine bone forming the dorsal half of the roof of the mouth.

polar plate

In some cells, the flattened platelike bodies seen at the end of the spindle during mitosis.

pterygoid plate

Either of a pair of thin, bony processes that arise from the sphenoid bone. They are termed medial and lateral pterygoid plates on each side, serve to bound the infratemporal fossa, and give origin to muscles of mastication.

pusher plate

A device that moves fluids in a specific direction.

tarsal plate

The dense connective tissue structure that supports the eyelid. It was formerly called tarsal cartilage; however, it is not true cartilage.

tympanic plate

The bony plate between the anterior wall of the external auditory meatus and the tympanum.

ventral plate

Floor plate.

Growth plate

The place in long bones where growth occurs during childhood.
Mentioned in: Rickets


1. the progressive increase in size of a living thing, especially the process by which the body reaches its point of complete physical development.
2. an abnormal formation of tissue, such as a tumor.

growth arrest line
a radiologically detectable line parallel to the growth plate in the metaphysis that indicates a temporary cessation of bone growth.
growth check
an event or state, usually the result of inadequate nutrition, parasitism or other disease, which temporarily reduces or stops growth in a young animal. Often followed by a period of compensatory growth.
compensatory growth
increased growth rate during a time period as a result of lower than normal growth rate during a previous period.
growth cone
bulbous enlargement at the tip of every growing axonal fiber in the fetus, from which many long filapodia extend.
growth curve
the curve obtained by plotting increase in size or numbers against the elapsed time.
growth disorders
are sometimes traceable to excess or shortage of pituitary secretions, and may arise from hereditary defects or from glandular abnormalities. Abnormally large secretions of growth hormone can produce gigantism. Failure of the pituitary gland to develop sufficiently or to secrete adequate amounts of growth hormone may result in dwarfism. In adulthood, overproduction of growth hormone may lead to acromegaly.
growth factor
substances which act as local regulators of cell division and function; classified as autocrine (act on cells of the same class) or paracrine (act on cells of a different class).
hematopoietic growth factors
see colony-stimulating factors.
one-step growth curve
a plot typical of the rapid growth of a virus in cell culture when all cells are infected simultaneously.
growth plate
the epiphyseal cartilage at which new bone formation occurs to lengthen long bones during their growth phase. Called also physis. See also epiphyseal plate.
growth promotants
includes all agents used to increase the rate of body weight gain. Used principally in food animals but also in horses with a view to increasing muscle mass and physical performance, and in any species to hasten recuperation in animals debilitated by illness. Pharmaceutical preparations are principally anabolic steroids. Husbandry procedures include estrogen and zearalenone implants and dietary supplementation with antibiotics, monensin and, in the case of pigs, copper.
growth rate
rate of increase in body weight per unit of time, e.g. lb/day in beef cattle.
recombinant growth factor
recombinant growth hormone.
growth retardation
stature smaller than normal; called also runt.
growth retardation lattice
radiodense metaphyseal lines parallel to the epiphyseal plate developing in fetal bone.
transforming growth factor [beta]
a family of extracellular signaling molecules important in the transformation of cells and in growth and development.
References in periodicals archive ?
The discovery of growth plates in dinosaur bone lends credence to that idea.
Although many growth plate injuries are caused by accidents that occur during play or athletic activity, growth plates are also susceptible to other types of injury, infection, and diseases that can alter their normal growth and development.
When I take a young man on here at the school, I don't start working with him until he brings in his elbow X-ray and I make sure his medial epicondyle growth plate is completely matured.
Several years ago he carried out experimental work on bones using shockwaves and found that the technique did not harm the growth plate in the long term.
After a trip to the hospital, it was determined that she had fractured the growth plate of her femur, strained a lateral ligament in her knee, and bruised her tibia.
Ingrown toenails that keep recurring are treated with injections of a chemical into the growth plate of the nail, which will stop the nail getting any longer.
The freshman struggled early in the season with a myriad of injuries, one involving a growth plate in her knee.
The growth plates at the end of long bones have not closed, but studies have found no correlation between growth plate closure and the incidence of injury.
To address this demand we have introduced our first two plating products in 2005, the Guided Growth Plate (eight-Plate(TM)) and the Contours VPS wrist plate.
When you look at a bone of an adult, you don't see that clear growth plate area any longer.
Last year was referred to a specialist who said I'd pulled the growth plate from my pelvis.