(n.) Any small calcareous or siliceous body found in the tissues of various invertebrate animals, especially in sponges and in most Alcyonaria.
Example Sentences:
(1) Almost nothing is known about nature and timing of the embryonic cues which induce or initiate spicule formation by these cells.
(2) X-ray examination disclosed a spicule formation surrounding the osteolytic focus in the mandible.
(3) Bone spicule pigmentation increased in 41 of 76 patients for whom we could make comparisons over a three-year interval (54%).
(4) In morphology it is similar to D. bargusinica Skrjabin 1917, D. campanae Anderson 1959, D. dollfusi Anderson 1959, and D. epsilon Johnston and Mawson 1940, but can be separated from these species by combinations of trident size and spicule size and morphology.
(5) Characteristics features of this species (only males were found) are the small size of body, size and type of spicules, shape of tail and arrangement of caudal papillae.
(6) Two different types of spicules in male Enterobius were also observed in Korea.
(7) The border was assessed for a smooth, irregular, or spiculated margin.
(8) The authors had under observation 21 patients with diastematomyelia--a rare congenital disease marked by the formation of a bony spicule in the vertebral canal, which splits the spinal cord and its meninges.
(9) In both studies, the poikilocytes were identified as echinocytes, spiculated erythrocytes, and schizocytes.
(10) The girdle epidermis of adult Mopalia muscosa secretes several types of structures, including calcareous spicules and innervated hairs.
(11) Deposits consisted of dense aggregations of randomly entangled spicules spreading within bundles of collagen fibrils.
(12) From the above results, it was evident that both the matrix vesicles derived from functioning osteoblast, and the vesicular structures derived from the degenerated or dead cells concurrently phagocytosing spicules and collagen fibrils were involved in the initial calcification process of the membranous bone in vitro.
(13) We present the first two cases of vertebral metastases from prostatic carcinoma with spicule formation giving rise to osseous spinal stenosis and neurological deficits, best demonstrated by CT.
(14) Their dendrites also bear fine spicules and usually reach the tectal surface.
(15) Methylmercuric chloride produced an irregularity of cell shape with spicules including the final stage of spherocytes.
(16) Three male siblings, born of nonconsanguineous parents, manifested the characteristic paravenous bone spicule accumulation typically seen in pigmented paravenous chorioretinal atrophy.
(17) They differ from D. ramachandrani in their location in the host, the tail length, the shape of the spicules, and in the number of caudal papillae.
(18) At the same time the red cells became crenated and developed thorny spicules (echinocytes).
(19) We believe that these spicules correspond to the reorganization of the stroma along the edges of the corneal incision.
(20) Despite the variability of some characters such as length of tail and spicules, arrangment of caudal papillae, these species are well characterized by a set of elements, the two most important of which are the female cuticle and the anatomy of the microfilariae.
Trabecula
Definition:
(n.) A small bar, rod, bundle of fibers, or septal membrane, in the framework of an organ part.
Example Sentences:
(1) Osteomalacia is characterized by large osteoid seams and a preserved volume of bone trabeculae.
(2) The osseous component consisted of immature woven bone trabeculae lined by abnormal osteoblasts with a fibroblastlike appearance.
(3) These trabeculae were associated with the glass particles, which exhibited osteophilic properties, while fibrous tissue separated the bone tissue from the HA particles.
(4) Thus the reflection technique may yield a measure of the mechanical property of bone trabeculae that is largely unaffected by the mass of the entire specimen, but mass and the structural density of the specimen affect the transmission method.
(5) The control group (without FAS) showed considerable breakdown of the bony trabeculae due to regression of the osteocytes in the centre of the reimplanted bone after 3 weeks, whereas in the FAS group bone was being built on to the vital trabeculae.
(6) An increase of priming frequency, or of [Ca2+], or addition of 30 nM isoproterenol to the perfusate caused a marked increase in F and D. Properties of human and porcine trabeculae were quantitatively similar.
(7) All the specimens showed necrosis of trabeculae and of bone marrow, but the most common and characteristic feature was evidence of old and new haemorrhage in the marrow.
(8) Right ventricular septomarginal trabeculae ('false-tendons') from puppies, young adult, and older adult dogs were examined by light and electron microscopy.
(9) In osteogenesis imperfecta, the poor formation of collagen leads to abnormally thin bony trabeculae with a poorly formed otic capsule.
(10) The afferent lymphatic vessel delivering lymph into one of the nodes divides over the capsular surface and within trabeculae into terminal branches, and these are continuous with the subcapsular and trabecular sinuses through rounded holes up to 30 microns across.
(11) The graft was completely united in 14 cases (82%), with bony trabeculae crossing the interface.
(12) The histological study of the tibiae showed decreased mineralization with narrower trabeculae and enlarged osteoid seams; bone resorption at the inner surface was also significantly decreased.
(13) On microscopic examination, they were composed of cells with moderate to abundant eosinophilic cytoplasm growing diffusely and in nodules, nests, and trabeculae; cysts or glands were conspicuous in two cases.
(14) TOH-containing fibers were associated with 90% of the blood vessels (arteries, veins, arterioles and venules) in the hilus, medullary and internodular regions of lymph nodes and in trabeculae with no obvious relationship to blood vessels.
(15) From the various parts of the sacrum (body, facets, alae and laminae) distinct sets of trabeculae extend towards the auricular surface.
(16) In the spleen, noradrenergic fibers enter with the vasculature, travel along the trabeculae and along the branching vasculature, and are distributed mainly in the white pulp along the central artery and associated periarterial lymphatic sheath.
(17) Computerized histomorphometry of sections from the upper tibia showed decreased epiphyseal bone volume and increased bone marrow volume; decreased height of hypertrophic cartilage in the growth plate and decreased amount of persisting cartilage in the metaphyseal bone trabeculae were also observed.
(18) Metaphyseal trabeculae from 1,25(OH)2D3 and placebo-treated rats were examined.
(19) By 5 days post-ALT increased amounts of trabeculae lacked an endothelial covering.
(20) At C2 level, it was found that trabeculae are involved in transfer of the compressive forces from the superior articular surface to the inferior articular process and body.