Disabled in one or more limbs, esp. in a leg or foot, impairing normal locomotion.
(lă-mĕl′ă) pl. 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 l. 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 l. A layer of bone that underlies the periosteum, encircling the medullary cavity.
concentric l. One of the cylindrical plates of bone surrounding a haversian canal. SYN: haversian l.
enamel l. 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 l. Interstitial lamella.
haversian l. Concentric lamella.
interstitial l. The bone lamella filling the irregular spaces within the haversian system. SYN: ground l.
periosteal l. The bone lamella next to and parallel with the periosteum, forming the external portion of bone.
(lă-mĕl′ăr) 1. Arranged in thin layers, plates or scales. 2. Pert. to the lamella.
Limping, abnormal gait, or hobbling resulting from partial loss of function in a leg. The symptom may be due to maldevelopment, injury, or disease.
(lam′ĭn) A filament, intermediate in size between microtubules and micro-filaments, that makes up a part of the cytoskeleton of the nucleus of a cell.
(lam′ĭ-nă, lam′ĭ-nē″, lam′ĭ-nī″) pl. laminae [L. lamina, thin plate] 1. A thin flat layer or membrane. 2. The flattened part of either side of the arch of a vertebra.
basal l. An 80-nm thick extracellular lamina of fibrils and proteoglycans along the basal surface of a variety of cells, including many epithelial, capillary endothelial, Schwann cells, and muscle cells. Basal laminae anchor cells, organize cell-to-cell interactions, and act as semipermeable membranes.
dental l. A U-shaped internal growth of the oral epithelium in the embryonic maxillary and mandibular regions that forms into enamel organs which produce the teeth. SEE: enamel organ.
l. dura In radiography, the compact bone (alveolar bone proper) that surrounds the roots of teeth. In a state ...