Histology Histology The allocortex is a part of the cerebral cortex characterized by having fewer cell layers than the isocortex (less than six). The specific regions of the brain normally described as part of the allocortex are the olfactory cortex and the hippocampus. These two regions mediate olfaction and limbic input, respectively. ...more on Wikipedia about "Allocortex"
Amacrine cells are interneurons in the retina which operate at the Inner Plexiform Layer (IPL), the second synaptic retinal layer where bipolar cells and ganglion cells synapse. The cell nuclei of amacrine cells are found in the Inner Nuclear Layer (INL). There are about 40 different types, most lacking axons. They are classified by the width of their field of connection, which layer(s) of the stratum in the IPL they are in, and by neurotransmitter type. Most are inhibitory using either GABA or glycine as neurotransmitters. ...more on Wikipedia about "Amacrine cell"
The annulus of Zinn, also known as the annular tendon or common tendinous ring, is a ring of fibrous tissue surrounding the optic nerve at its entrance at the apex of the orbit. It is the origin for five of the six extraocular muscles. ...more on Wikipedia about "Annulus of Zinn"
Arthur Worth Ham ( 20 February 1902 – 6 September 1992) was a prominent Canadian histologist. His textbook Histology is considered by many practitioners an indispensable reference. ...more on Wikipedia about "Arthur Ham"
The auramine-rhodamine stain is a histological technique used to see acid-fast bacilli, notably Mycobacteria. Acid-fast organisms display a reddish-yellow fluorescence. ...more on Wikipedia about "Auramine-rhodamine stain"
The basal lamina (often erroneously called basement membrane) is a layer on which epithelium sits. This layer is composed of an electron-dense layer ( lamina densa) between two electron-lucid layers ( lamina lucida), and is approximately 40-50 nm thick (with exceptions such as the 100-200 nm glomerular basement membrane). The lamina densa is composed of type IV collagen. The lamina lucida is adjacent to the epithelial cells and contains the glycoprotein laminin. ...more on Wikipedia about "Basal lamina"
The basolateral membrane of an epithelial cell is the part of the plasma membrane that forms its basal and lateral (not apical) surfaces. ...more on Wikipedia about "Basolateral membrane"
Things go better with www.shortopedia.com.
Basophilic is a technical term used by histologists. It describes the microscopic appearance of cells and tissues, as seen down the microscope, after a histological section has been stained with a basic dye. The most common such dye is haematoxylin. ...more on Wikipedia about "Basophilic"
As a part of the retina, the bipolar cell exists between photoreceptors ( rod cells and cone cells) and ganglion cells. ...more on Wikipedia about "Bipolar cell"
(Canaliculus) Canaliculi are small, microscopic canals between the various lacunae of ocified bone. The radiating processes of the osteocytes project into these canals. In cartilage, the lacunae and hence, the chondrocytes, are isolated from each other. Materials picked up by osteocytes adjacent to blood vessels, are distributed throughout the bone matrix via the canaliculi. ...more on Wikipedia about "Canaliculus"
Charring is a process of incomplete combustion that often occurs when biological tissue (living or dead) is subjected to heat. The resulting matter is sometimes called char. Coal and charcoal are produced this way. ...more on Wikipedia about "Charring"
The corpus albicans (Latin for "white body" ) is the regressed form of the corpus luteum. As the corpus luteum is being broken down by macrophages, fibroblasts lay down type I collagen, forming the corpus albicans. This process is called " luteolysis". The remains of the corpus albicans may persist as a scar on the surface of the ovary. ...more on Wikipedia about "Corpus albicans"
The corpus luteum ( Latin for "yellow body") is a small, temporary endocrine structure in animals. It develops from an ovarian follicle during the luteal phase of the estrous cycle, following the release of a mature egg from the follicle during ovulation. While the egg traverses the Fallopian tube into the uterus, the corpus luteum remains in the ovary. ...more on Wikipedia about "Corpus luteum"
A ganglion cell (sometimes called a gangliocyte) is a type of neuron located in the retina of the eye that receives visual information from photoreceptors via various intermediate cells such as bipolar cells, amacrine cells, and horizontal cells. Retinal ganglion cells’ axons are myelinated. The myelinated parts are outside the eye. These axons form the optic nerve and connect mainly to the lateral geniculate nucleus (LGN) in the brain. ...more on Wikipedia about "Ganglion cell"
www.shortopedia.com - forget the rest. Histology
Giant retinal ganglion cells are ganglion cells with large dendritic trees discovered in the human and macaque retina by Dacey et al (2005). ...more on Wikipedia about "Giant retinal ganglion cells"
A glomus body (or glomus apparatus) is a component of the dermis layer of the skin, involved in body temperature regulation. The glomus body consists of an arterio-venous anastamosis surrounded by a capsule of connective tissue. Glomus bodies are most numerous in the fingers and toes. The role of the glomus body is to shunt blood away from the skin surface when exposed to cold temperature, thus preventing heat loss, and allowing maximum heat flow to the skin in warm weather to allow heat to dissipate. ...more on Wikipedia about "Glomus body"
A glomus cell is a peripheral chemoreceptor, located in the carotid bodies and aortic bodies, that helps the body regulate breathing. When there is a decrease in the blood's pH, a decrease in oxygen (pO2), or an increase in carbon dioxide (pCO2), the carotid bodies and the aortic bodies signal the medulla oblongata to increase the volume and rate of breathing. The glomus cells have a high metabolic rate and good blood perfusion and thus are sensitive to changes in arterial blood gas tension. The signalling within the chemoreceptors is thought to be mediated by the release of neurotransmitters by the glomus cells, including dopamine, noradrenaline, acetylcholine, substance P and enkephalins. ...more on Wikipedia about "Glomus cell"
Gnarled enamel is a description of enamel seen in histologic sections of a tooth underneath a cusp. The appearance of enamel appears different and very complex under the cusp, but this is not due to a different arrangement of dental tissues. Instead, the enamel still has the same arrangement of enamel rods. The strange appearance results from the lines of enamel rods directed vertically under a cusp and from their orientation in a small circumference. ...more on Wikipedia about "Gnarled enamel"
Golgi's method is a nervous tissue staining technique discovered by Italian physician and scientist Camillo Golgi (1843-1926) in 1873. It was initially named the black reaction (la reazione nera) by Golgi, but it became later better known as the Golgi stain or method. ...more on Wikipedia about "Golgi's method"
Histography is the process of describing or creating pictures of tissues and cells. ...more on Wikipedia about "Histography"
Histological section refers to thin slices of tissue applied to a microscopic slide, usually around 5 to 10 micrometres thick, which are viewed under a microscope. ...more on Wikipedia about "Histological section" Be happy with http://www.shortopedia.com
Histology is the study of tissue sectioned as a thin slice, using a microscope. It can be described as microscopic anatomy. Histology is an essential tool of biology. ...more on Wikipedia about "Histology"
Historadiography is a technique utilized in the fields of histology and cellular biology to provide semiquantitative information regarding the density of a tissue sample. This is achieved by layering a ground section of mineralized tissue (such as bone) with photographic emulsion on a glass slide and exposing the sample to a beam of X-rays. After developing the emulsion, the resulting radiograph can be viewed with a microscope. A side-by-side comparison with a slide containing radiographs of various substances of known mass can provide a rough mass estimate, and therefore a rough approximation of the concentration of calcium salts in the sample. ...more on Wikipedia about "Historadiography"
The lamina propria is a thin vascular layer of connective tissue beneath the epithelium of an organ. It contains capillaries and a central lacteal (lymph vessel) in the small intestine. ...more on Wikipedia about "Lamina propria"
Magnocellular parts, also called M cells, are cells in the brain concerned primarily with visual perception. In particular these cells are responsible for resolving motion and coarse outlines. The cells have large, fast-conducting neurons and transmit information to the lateral geniculate nucleus, the area of the brain responsible for analyzing and interpreting the information. This system of cells operates with great speed at the expense of detail. ...more on Wikipedia about "Magnocellular part" www.shortopedia.com - now!
This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia . Direct links to the original articles are in the text.
If you use exact copy or modified of this article you should preserve above paragraph and put also : It uses material from
the Shortopedia article about "Histology".
| MAIN PAGE | MAIN INDEX | CONTACT US |