what are lacunae
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Lacuna (histology) In histology, a lacuna is a small space containing an osteocyte in bone or chondrocyte in cartilage.n an ordinary microscopic section, viewed by transmitted light, they appear as fusiform opaque spots. Each lacuna is occupied during life by a branched cell, termed an osteocyte, bone-cell or bone-corpuscle.
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- These microvilli can be found on top of villi. Villi are small, finger-like projections that protrude from the mucosal lining and increase nutrient absorption. Within each villus you will find plentiful capillary beds along with lacteals. Lacteals are lymphatic capillaries that absorb dietary fats.
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O Fortuna  O Fortuna  is a medieval Latin Goliardic poem written early in the 13th century, part of the collection known as the Carmina Burana. Fortuna topped a list of the most-played classical music of the past 75 years in the United Kingdom.
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- The rumen and reticulum (reticulo-rumen) is the largest compartment of the cow’s stomach. Fiber, starch, sugar, and proteins are fermented by the microbes to form volatile fatty acids and microbial protein. Rumen papillae absorb volatile fatty acids.. Rumen & Reticulum (also called the “Reticulo-rumen” or simply the “Rumen”): The capacity of an adult dairy cow’s rumen is about 184 liters (49 gallons) and the reticulum is about 16 liters (4.25 gallons).
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Thermae In ancient Rome, thermae (from Greek thermos, hot) and balnea (Greek βαλανείον, balaneion) were facilities for bathing. Thermae usually refers to the large imperial bath complexes, while balneae were smaller-scale facilities, public or private, that existed in great numbers throughout Rome. [1] Most Roman cities had at least one, if not many, such buildings, which were centers not only for bathing, but socializing.
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Osteocyte When osteoblasts become trapped in the matrix they secrete, they become osteocytes. Osteocytes are networked to each other via long... a cell that lies within the substance of fully formed bone. It occupies a small chamber called a lacuna, which is contained in the calcified matrix of bone.hen osteoblasts become trapped in the matrix they secrete, they become osteocytes. Osteocytes are networked to each other via long... a cell that lies within the substance of fully formed bone. It occupies a small chamber called a lacuna, which is contained in the calcified matrix of bone.
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- lacuna definition, lacuna meaning | English dictionary. Search also in: Web News Encyclopedia Images. lacuna. n pl , -nae , -nas. 1 a gap or space, esp. in a book or manuscript. 2 (Biology) a cavity or depression, such as any of the spaces in the matrix of bone. 3 another name for → coffer → 3. (C17: from Latin lacuna pool, cavity, from lacus lake) ♦ lacunose, lacunal, lacunary adj.
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The Respiratory System Branchiae, also known as gills, are small portions of highly-vascularized tissues inside or outside the body which are in direct contact with the surrounding water. Gills are the organs that carry out gas exchange in aquatic annelids, crustaceans, fish and amphibian larvae (e.g., tadpoles).
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Lac Lac is the scarlet resinous secretion of a number of species of lac insects, of which the most commonly cultivated species is Kerria lacca.Cultivation begins when a farmer gets a stick (broodlac) that contains eggs ready to hatch and ties it to the tree to be infested.ac for dye has been somewhat replaced by the emergence of synthetic dyes, though it remains in use, and some juices, carbonated drinks, wine, jam, sauce, and candy are colored using it. Lac is used in folk medicine as a hepatoprotective and anti-obesity drug.
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Frenulum From Wikipedia, the free encyclopedia. A frenulum (or frenum, plural: frenula or frena, from the Latin frēnulum, little bridle, the diminutive of frēnum) is a small fold of tissue that secures or restricts the motion of a mobile organ in the body. 1 In human anatomy.
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Structure of Bone Tissue Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix.Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.here are two types of bone tissue: compact and spongy. The names imply that the two types differ in density, or how tightly the tissue is packed together. There are three types of cells that contribute to bone homeostasis.
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Lacunar Infarcts So what is a lacunar infarct? This type of stroke involves blockage of one of the main arteries that supply structures deep inside the brain. Several distinct syndromes, or collections of related symptoms, have been described, which can affect the patient’s ability to recover from the stroke and regain normal function. lacunar infarct gets its name from the changes that are grossly visible in the brain when it is examined postmortem. The parts of the brain that have died from lack of oxygen form open spaces, which are called lacunae.
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Cerebral Infarction- Causes, Symptoms and Treatment Lacunar cerebral infarction refers to old or new infarctions deep within the brain. When this occurs, lacunas or holes are formed. Depending on the infracted blood vessels, symptoms like limb numbness, dizziness, headache, aphasia and clumsiness may occur. This is due to the small arteries being blocked. Lacunar cerebral infarction may be caused by cerebral arteriosclerosis and hypertension.
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Serous demilune A serous demilune or Crescents of Gianuzzi is a cap in the shape of a half-moon (hence the name demilune) on some salivary glands.Serous demilunes are the serous cells at the distal end of mucous tubuloalveolar secretory unit of certain salivary glands.These demilune cells secrete the proteins that contain the enzyme lysozyme, which degrades the cell walls of bacteria. In this way, lysozyme confers antimicrobial activity to mucus.he serous demilune is an artifact from traditional methods of preparing samples. Samples are traditionally preserved and fixed in formaldehyde. When samples were preserved by quick-freezing in liquid nitrogen and then fixed with osmium tetraoxide in acetone, no demilunes are found.
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Lacunes and Stroke Lacunes and Stroke. The term lacune has been in the medical literature for more than 150 years and was first used to describe the small cavity that remains after a small stroke has healed.After a period of relative obscurity, the term was revived in the English-language medical literature in the 1960s.
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- From Wikipedia, the free encyclopedia. A frenulum (or frenum, plural: frenula or frena, from the Latin frēnulum, little bridle, the diminutive of frēnum) is a small fold of tissue that secures or restricts the motion of a mobile organ in the body. 1  1 In human anatomy.  2 In entomology.
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Bone canaliculus Bone canaliculi are microscopic canals between the lacunae of ossified bone. The radiating processes of the osteocytes (called filopodia) project into these canals. These cytoplasmic processes are joined together by gap junctions.
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Hand â Bones, Ligaments, Muscles & Conditions Ligaments are strong bands of tissue, made of collagen, that connect bone to bone. There are numerous ligaments that provide mobility and stability to the hand particularly the collateral, dorsal, volar, and interosseous ligaments. The wrist has a complex web of ligaments stabilizing the carpal bones.ntrinsic muscles only act on the fingers. The extrinsic muscles are the long flexors and extensors, which run from the forearm into the hand, providing strength to the hand and wrist. The flexors enable the fingers to bend while the extensor muscles are used to straighten the fingers.
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- -Central canal run longitudinally through the bone. Around the canals are concentric lamellae. Between the lamellae are small spaces called lacunae that contain osteocytes. Compact Bone Tissue: Canaliculi: filled with extracellular fluid, fingerlike processes of osteocytes.
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Definition of 'lacuna' Definition of 'lacuna'. lacuna (ləkjuːnə ) If you say that there is a lacuna in something such as a document or a person's argument, you mean that it does not deal with an important issue and is therefore not effective or convincing. There are still major lacunae in the material available.
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How Do You Play a DVD Movie on a Laptop? Full Answer. 1  Insert the DVD Locate the DVD drive on the side of the laptop. 2  Choose a player In Windows, choose the Autoplay option in the pop-up box. 3  Play the movie After choosing a media player, the movie should start playing.
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definitions - Small intestinereport a problem The function of the plicae circulares, the villi, and the microvilli is to increase the amount of surface area available for the absorption of nutrients. Each villus has a network of capillaries and fine lymphatic vessels called lacteals close to its surface. The epithelial cells of the villi transport nutrients from the lumen of the intestine into these capillaries ( amino acids and carbohydrates) and lacteals (lipids).
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My father had a lacunar stroke â what does this mean? This leads to the death of some brain cells. Many strokes are caused by blockages of the largest arteries in the brain. A lacunar stroke involves smaller arteries deep in the brain that branch off the large arteries. Because the arteries are smaller, the amount of brain tissue they feed is smaller than the amount fed by the large arteries. Still, lacunar strokes can cause significant disability.
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Lacuna (histology) In histology, a lacuna is a small space containing an osteocyte in bone or chondrocyte in cartilage.
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lacuna Exploring the etymology of lacuna involves taking a plunge into the pit - or maybe a leap into the lacus (that's the Latin word for lake). Latin speakers modified lacus into lacuna, and used it to mean pit, cleft, or pool.. English speakers borrowed the term in the 17th century. Another English word that traces its origin to lacuna is lagoon, which came to us by way of Italian and French.
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lacuna any of the small cavities within the cartilage matrix, containing a chondrocyte. Howship's lacuna. the concave cavities which are formed by osteoclasts in the process of bone resorption. osseous lacuna. bone lacuna (see above).acuna, absorption (Howship's lacuna), n an area (pit) of bone resorption, usually irregular in outline, and often containing osteoclasts.