bone spicule definition
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What Is a Bone Spicule? Bone spicule is a broad term that carries different meanings based on different fields. The term is used in dental surgery, osteology and also in ophthalmology.Most people in medical fields are aware about this term because it s usually used to describe the bony matrix in the development of a new bone.ental Bone Spicules. In comparison to other bone spicules, dental bone spicule is a relatively familiar term due to the fact that one might have heard about it occasionally on their visit to a dental clinic.
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spicule spic•ule. 1. a small, needlelike crystal, process, or the like. 2. one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine and freshwater invertebrates.spīculum ]. spic′u•late` (-yəˌleɪt, -lɪt) adj.. A small needlelike structure or part, such as one of the silicate or calcium carbonate processes supporting the soft tissue of certain invertebrates, especially sponges. 2. Astronomy A spike-shaped formation emanating from the ionized gas of the solar photosphere.
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Anatomy Chapter 6 - Bone Tissue Spongy (cancellous) bone tissue. Bone tissue that does not contain osteons, but consists of an irregular latticework of thin plates of bone called trabeculae; spaces between trabeculae of some bones are filled with red bone marrow; found inside short, flat, and irregular bones and in the epiphyses of long bones.  .one tissue that does not contain osteons, but consists of an irregular latticework of thin plates of bone called trabeculae; spaces between trabeculae of some bones are filled with red bone marrow; found inside short, flat, and irregular bones and in the epiphyses of long bones.   .
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Spondylolysis and Spondylolisthesis - Topic Overview Spondylolysis is a defect or fracture of one or both of the wing-shaped parts of a vertebra. These wings help keep the vertebrae in place. When a wing is absent, defective from birth, or damaged, a vertebra can slide forward or backward over the bone below, sometimes pressing on the spinal cord or a nerve root.
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- Spondylolysis is the medical term for a spine fracture or defect that occurs at the region of the pars interarticularis. The pars interarticularis is region between the facet joints of the spine, and more specifically the junction of the superior facet and the lamina.
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- Sponge Animation: Spicules. Length: 1:59. Spicules are microscopic structures of hard crystal material with fantastic shapes unique to the different species of sponge. They are part of the skeleton that helps give the sponge its shape.
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- Overview. Spondylolysis is the medical term for a spine fracture or defect that occurs at the region of the pars interarticularis. The pars interarticularis is region between the facet joints of the spine, and more specifically the junction of the superior facet and the lamina.
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Sesamoid bone In anatomy, a sesamoid bone (/ˈsɛsəmɔɪd/) is a bone embedded within a tendon or a muscle. It is derived from the Latin word sesamum (sesame seed), due to the small size of most sesamoids. Often, these bones form in response to strain. In the hand — two sesamoid bones are commonly found in the distal portions of the first metacarpal bone (within the tendons of adductor pollicis and flexor pollicis brevis).
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- Spongy bone is a network of irregularly-shaped sheets and spikes of bone (trabeculae). The trabeculae are only a few cell layers thick. The spaces between the trabeculae contain red or yellow marrow, depending on a person's age and on which bone it is.
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- compact bone diaphysis looks solid, practically without holes or gaps-. spongy bone is metaphysis and the epiphysis on the other hand are composed of thousands of spicules or trabeculae of bone, interconnected.
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long bone long bone. one of the elongated bones of the extremities, consisting of a tubular shaft (diaphysis) and two extremities (epiphyses) usually wider than the shaft; the shaft is composed of compact bone surrounding a central medullary cavity.one substance that is dense and noncancellous. cortical bone. the compact bone of the shaft of a bone that surrounds the marrow cavity. bone cyst. a discrete, grossly visible cavity, filled with fluid and often lined by a membrane.
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Osteoblast Osteoblasts (blue) rimming a bony spicule (pink - on diagonal of image). In this routinely fixed and decalcified (bone mineral removed) tissue, the osteoblasts have retracted and are separated from each other and from their underlying matrix. In living bone, the cells are linked by tight junctions and gap junctions, and integrated with underlying osteocytes and matrix H&E stain.
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Histology Photomicrographs Microscope at 40X. Spongy bone is a network of irregularly-shaped sheets and spikes of bone (trabeculae). The trabeculae are only a few cell layers thick. The spaces between the trabeculae contain red or yellow marrow, depending on a person's age and on which bone it is.The marrow in these images is red marrow.icroscope at 40X. Spongy bone is a network of irregularly-shaped sheets and spikes of bone (trabeculae). The trabeculae are only a few cell layers thick. The spaces between the trabeculae contain red or yellow marrow, depending on a person's age and on which bone it is. The marrow in these images is red marrow.
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Spicule (solar physics) Description [edit]. Spicules last for about 15 minutes; at the solar limb they appear elongated (if seen on the disk, they are known as mottles or fibrils).
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Nutria Nutria are medium sized rodents that live in freshwater environments. They are native to South America. Nutria can grow up to 40 inches from its nose to the tip of its round, rat-like tail. They weigh an average of 12 pounds, although some can reach up to 40 pounds. They are herbivores and feed primarily on the roots and stems of wetland plants.
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Spongy bone Spongy bone. Definition. noun. (1) The osseous tissue that fills the interior or cavity of bones with a latticework of small spicules or flat pieces of mineralized bars (trabeculae) and interstices containing bone marrow or fat.(2) The tissue inside of bones that resembles a sponge or a honeycomb with spaces containing bone marrow or fat.Supplement. This type of osseous tissue lies subjacent to the compact bone, and is made distinct by its spongy structure. It is found at the ends of long bones and in the vertebrae.It has low density and strength but has high surface area that allows room for blood vessels and marrow.his type of osseous tissue lies subjacent to the compact bone, and is made distinct by its spongy structure. It is found at the ends of long bones and in the vertebrae. It has low density and strength but has high surface area that allows room for blood vessels and marrow.
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- Cyst A unicameral bone cyst, also commonly referred to as a simple bone cyst, is a benign cavity in the bone which is filled with fluid and lined by compressed tissue. Though common in the long bones, unicameral bone cysts can occur in any bone in the body.
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Bone scan for bone cancer A bone scan is an imaging test that can detect cancerous cells, evaluate fractures in the bones, and monitor other bone conditions, such as infections and arthritis. During a bone scan, a small dose of radioactive material is injected into a vein, where it travels through the bloodstream.
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spicule n. pl. spic·ules also spic·u·lae (-yə-lē). 1. A small needlelike structure or part, such as one of the silicate or calcium carbonate processes supporting the soft tissue of certain invertebrates, especially sponges. 2. Astronomy A spike-shaped formation emanating from the ionized gas of the solar photosphere.
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What is Sclerotic Foci?nhtom Nov 01, 2006 Osteonecrosis, also known as avascular necrosis, is a disease resulting from the temporary or permanent loss of the blood supply to the bones. Without blood, the bone tissue dies and causes the bone to collapse. If the process involves the bones near a joint, it often leads to collapse of the joint surface.
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Trabecula Trabecula. Definition. noun, plural: trabeculae. (general). A small supporting structure in the form of a beam, strut or rod. (anatomy). (1) A small mineralized spicule that forms a network in spongy bone. (2) A fibrous strand of connective tissue that supports it in place.
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lacuna bone lacuna a small cavity within the bone matrix, containing an osteocyte; from it slender canaliculi radiate and penetrate the adjacent lamellae to anastomose with the canaliculi of neighboring lacunae, thus forming a system of cavities interconnected by minute canals.owship's lacuna. the concave cavities which are formed by osteoclasts in the process of bone resorption. osseous lacuna. bone lacuna (see above). osteocytic lacuna. see bone lacuna (above).
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Spicule (solar physics) Solar active region 10380, June 2004. In solar physics, a spicule is a dynamic jet of about 500 km diameter in the chromosphere of the Sun. It moves upwards at about 20 km/s from the photosphere. They were discovered in 1877 by Father Angelo Secchi of the Vatican Observatory in Rome.
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Bone Bone tissue, or osseous tissue, is the major structural and supportive connective tissue of the body.Bone tissue forms the rigid part of the bones that make up the skeleton.Bone tissue is different from bones themselves — bones are organs made up of bone tissue as well as marrow, blood vessels, epithelium and nerves, while bone tissue refers specifically to the mineral matrix that form the rigid sections of the organ.here are two types of bone tissue: cortical bone and cancellous bone. Cortical bone is synonymous with compact bone, and cancellous bone is synonymous with trabecular and spongy bone. Cortical bone forms the extremely hard exterior while cancellous bone fills the hollow interior.
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Bone Markings / Features on Bones The following terms used to describe bone markings or features on bones are in alphabetical order with short definitions: Word / Term. (Bone Marking or Feature). Meaning / Description. Type of bone marking. Example(s). 1.rticulatory surface. The radial notch of the ulna (inner bone of the lower forearm) is a narrow, oblong, articular depression on the lateral side of the coronoid process; it articulates with the head of the radius (outer bone of the lower forearm). 18.
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- Cancellous bone, synonymous with trabecular bone or spongy bone, is one of two types of osseous tissue that form bones.The other osseous tissue type is cortical bone also called compact bone.his gives it softer, weaker, and more flexible characteristics. The greater surface area in comparison with cortical bone makes cancellous bone suitable for metabolic activity e.g. exchange of calcium ions.