Medical term:
lamel
lamella
(la-mel'a) plural.lamellae [L., a little plate]1. A thin layer, sheet, or plate.
2. A medicated disk of gelatin inserted under the lower eyelid and against the eyeball; used as a local application to the eye.
bone lamella
Plates of collagen fibers, 3 to 7 µm thick, found in secondary (mature, adult) bone and surrounded by cementing substance, the mineralized bone matrix. Some lamellae are parallel to each other. Other lamellae are aligned concentrically around a vascular canal — a structure known as a haversian system or osteon.
circumferential lamella
A layer of bone that underlies the periosteum, encircling the medullary cavity.
concentric lamella
One of the cylindrical plates of bone surrounding a haversian canal. Synonym: haversian l
enamel lamella
Microscopic cracks or calcification imperfections in the enamel surface of a tooth. They may be shallow or extend into the underlying dentin and occur as a developmental defect or a microfracture caused by temperature change or shearing forces.
ground lamella
Interstitial lamella.haversian lamella
Concentric lamella.interstitial lamella
The bone lamella filling the irregular spaces within the haversian system. Synonym: ground l.
medullary lamella
An osseous lamella surrounding and forming the wall of the marrow cavity of long bones.
periosteal lamella
The bone lamella next to and parallel with the periosteum, forming the external portion of bone.
triangular lamella
The small fibrous lamina between the choroid plexuses of the third ventricle of the brain.
vitreous lamella
Bruch's membrane.Medical Dictionary, © 2009 Farlex and Partners
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