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Hyaline
A hyaline substance is one with a glassy appearance. The word is derived from , and . Histopathology Hyaline cartilage is named after its glassy appearance on fresh gross pathology. On light microscopy of H&E stained slides, the extracellular matrix of hyaline cartilage looks homogeneously pink, and the term "hyaline" is used to describe similarly homogeneously pink material besides the cartilage. Hyaline material is usually acellular and proteinaceous. For example, arterial hyaline is seen in aging, high blood pressure, diabetes mellitus and in association with some drugs (e.g. calcineurin inhibitors). It is bright pink with PAS staining. Ichthyology and entomology In ichthyology and entomology Entomology (from Ancient Greek ἔντομον (''éntomon''), meaning "insect", and -logy from λόγος (''lógos''), meaning "study") is the branch of zoology that focuses on insects. Those who study entomology are known as entomologists. In ..., ''hyaline'' denotes a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaline Cartilage
Hyaline cartilage is the glass-like (hyaline) and translucent cartilage found on many joint surfaces. It is also most commonly found in the ribs, nose, larynx, and trachea. Hyaline cartilage is pearl-gray in color, with a firm consistency and has a considerable amount of collagen. It contains no nerves or blood vessels, and its structure is relatively simple. Structure Hyaline cartilage is the most common kind of cartilage in the human body. It is primarily composed of type II collagen and proteoglycans. Hyaline cartilage is located in the trachea, nose, epiphyseal plate, sternum, and ribs. Hyaline cartilage is covered externally by a fibrous membrane known as the perichondrium. The primary cells of cartilage are chondrocytes, which are in a matrix of fibrous tissue, proteoglycans and glycosaminoglycans. As cartilage does not have lymph glands or blood vessels, the movements of solutes, including nutrients, occur via diffusion within the fluid compartments contiguous with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infant Respiratory Distress Syndrome
Infant respiratory distress syndrome (IRDS), also known as surfactant deficiency disorder (SDD), and previously called hyaline membrane disease (HMD), is a syndrome in premature infants caused by developmental insufficiency of pulmonary surfactant production and structural immaturity in the lungs. It can also be a consequence of neonatal infection and can result from a genetic problem with the production of surfactant-associated proteins. IRDS affects about 1% of newborns and is the leading cause of morbidity and mortality in preterm infants. Data have shown the choice of elective caesarean sections to strikingly increase the incidence of respiratory distress in term infants; dating back to 1995, the UK first documented 2,000 annual caesarean section births requiring neonatal admission for respiratory distress. The incidence decreases with advancing gestational age, from about 50% in babies born at 26–28 weeks to about 25% at 30–31 weeks. The syndrome is more frequent in m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaline Arteriolosclerosis
Arteriolosclerosis is a form of cardiovascular disease involving hardening and loss of elasticity of arterioles or small arteries and is most often associated with hypertension and diabetes mellitus. Types include hyaline arteriolosclerosis and hyperplastic arteriolosclerosis, both involved with vessel wall thickening and luminal narrowing that may cause downstream ischemic injury. The following two terms whilst similar, are distinct in both spelling and meaning and may easily be confused with arteriolosclerosis. * Arteriosclerosis is any hardening (and loss of elasticity) of medium or large arteries (from the Greek '' arteria'', meaning ''artery'', and '' sclerosis'', meaning ''hardening'') * Atherosclerosis is a hardening of an artery specifically due to an atheromatous plaque. The term ''atherogenic'' is used for substances or processes that cause atherosclerosis. Hyaline arteriolosclerosis Also arterial hyalinosis and arteriolar hyalinosis refers to thickening of the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaloserositis
In pathology, hyaloserositis is the coating of an organ with a fibrous hyaline,Hyaloserositis. Online Medical Dictionary. URLhttp://cancerweb.ncl.ac.uk/cgi-bin/omd?hyaloserositis Accessed on: June 21, 2008. resulting from inflammation of the serous membrane (serositis) covering the organ. The spleen is commonly affected and often referred to as sugar-coated spleen. The liver and heart are also sometimes affected and referred to as frosted liver (or sugar-coated liver) and frosted heart respectively. Hyaloserositis of the spleen is usually considered benign, i.e. it does not necessitate any treatment. See also *Hyaline *Serositis Serositis refers to inflammation of the serous tissues of the body, the tissues lining the lungs (pleura), heart (pericardium), and the inner lining of the abdomen (peritoneum) and organs within. It is commonly found with fat wrapping or creepin ... References Gross pathology {{Pathology-stub} ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light Microscopy
Microscopy is the technical field of using microscopes to view subjects too small to be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of microscopy: optical, electron, and scanning probe microscopy, along with the emerging field of X-ray microscopy. Optical microscopy and electron microscopy involve the diffraction, reflection, or refraction of electromagnetic radiation/electron beams interacting with the specimen, and the collection of the scattered radiation or another signal in order to create an image. This process may be carried out by wide-field irradiation of the sample (for example standard light microscopy and transmission electron microscopy) or by scanning a fine beam over the sample (for example confocal laser scanning microscopy and scanning electron microscopy). Scanning probe microscopy involves the interaction of a scanning probe with the surface of the object of interest. The de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micrograph
A micrograph is an image, captured photographically or digitally, taken through a microscope or similar device to show a magnify, magnified image of an object. This is opposed to a macrograph or photomacrograph, an image which is also taken on a microscope but is only slightly magnified, usually less than 10 times. Micrography is the practice or art of using microscopes to make photographs. A photographic micrograph is a photomicrograph, and one taken with an electron microscope is an electron micrograph. A micrograph contains extensive details of microstructure. A wealth of information can be obtained from a simple micrograph like behavior of the material under different conditions, the phases found in the system, failure analysis, grain size estimation, elemental analysis and so on. Micrographs are widely used in all fields of microscopy. Types Photomicrograph A light micrograph or photomicrograph is a micrograph prepared using an optical microscope, a process referred to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephonodes Hylas 2011-11-06
''Cephonodes'' is a genus of moths in the family Sphingidae. (''Cephanodes'' is a frequent misspelling.) The genus was erected by Jacob Hübner in 1819. Species *'' Cephonodes apus'' (Boisduval, 1833) *'' Cephonodes armatus'' Rothschild & Jordan, 1903 *'' Cephonodes banksi'' Clark 1923 *''Cephonodes hylas'' (Linnaeus, 1771) *'' Cephonodes janus'' Miskin, 1891 *'' Cephonodes kingii'' (W. S. Macleay, 1826) *'' Cephonodes leucogaster'' Rothschild & Jordan, 1903 *'' Cephonodes lifuensis'' Rothschild, 1894 *'' Cephonodes novebudensis'' Clark, 1927 *'' Cephonodes picus'' (Cramer, 1777) *'' Cephonodes rothschildi'' Rebel, 1907 *'' Cephonodes rufescens'' Griveaud, 1960 *'' Cephonodes santome'' Pierre, 2002 *'' Cephonodes tamsi'' Griveaud, 1960 *'' Cephonodes titan'' Rothschild, 1899 *'' Cephonodes trochilus'' (Guerin-Meneville, 1843) *'' Cephonodes woodfordii'' Butler, 1889 *'' Cephonodes xanthus'' Rothschild & Jordan, 1903 Gallery Cephonodes banksi johani MHNT CUT 2010 0 137 Punkak Pal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyalopilitic
Hyalopilitic is a textural term used in petrographic classification of volcanic rocks. Specifically, hyalopilitic refers to a volcanic rock groundmass, which is visible only under magnification with a petrographic microscope, that contains a mixture of very fine-grained mineral crystals either mixed with natural volcanic glass, or surrounded by thin bands of volcanic glass. See also * List of rock textures * Rock microstructure * Obsidian Obsidian ( ) is a naturally occurring volcanic glass formed when lava extrusive rock, extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock. Produced from felsic lava, obsidian is rich in the lighter element ... References Igneous petrology Volcanic rocks {{igneous-petrology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaloid Canal
The hyaloid canal (Cloquet's canal and Stilling's canal) is a small transparent canal running through the vitreous body from the optic nerve disc (at the punctum caecum) to the lens. It is formed by an invagination of the hyaloid membrane, which encloses the vitreous body. In the fetus, the hyaloid canal contains a prolongation of the central artery of the retina, the hyaloid artery, which supplies blood to the developing lens. Once the lens is fully developed the hyaloid artery retracts and the hyaloid canal contains lymph Lymph () is the fluid that flows through the lymphatic system, a system composed of lymph vessels (channels) and intervening lymph nodes whose function, like the venous system, is to return fluid from the tissues to be recirculated. At the ori .... The hyaloid canal appears to have no function in the adult eye, though its remnant structure can be seen. Contrary to initial belief, the hyaloid canal does not facilitate changes in the volume of the le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
