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Infundibular
An infundibulum (Latin for ''funnel''; plural, ''infundibula'') is a funnel-shaped cavity or organ. Anatomy * Brain: the pituitary stalk, also known as the ''infundibulum'' and ''infundibular stalk'', is the connection between the hypothalamus and the posterior pituitary. * Hair follicle: the infundibulum is the cup or funnel in which a hair follicle grows. * Infundibulum (heart): The infundibulum of the heart, or conus arteriosus, is the outflow portion of the right ventricle. * Lung: The alveolar sacs of the lungs, from which the air chambers (alveoli) open, are also called ''infundibula''. * Sinus (anatomy): The ethmoidal infundibulum is the most important of three infundibula of the nose: the frontal infundibulum and the maxillary infundibulum flow into it. * Infundibulum of uterine tube: the funnel-like end of the mammal oviduct nearest to the ovary. * Gallbladder: The Infundibulum of the gallbladder (also known as the "neck" of the gallbladder) is the end of nearest to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Botanical Terms
This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary of leaf morphology. For other related terms, see Glossary of phytopathology, Glossary of lichen terms, and List of Latin and Greek words commonly used in systematic names. A B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Funnel
A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. Funnels are usually made of stainless steel, aluminium, glass, or plastic. The material used in its construction should be sturdy enough to withstand the weight of the substance being transferred, and it should not react with the substance. For this reason, stainless steel or glass are useful in transferring diesel, while plastic funnels are useful in the kitchen. Sometimes disposable paper funnels are used in cases where it would be difficult to adequately clean the funnel afterwards (for example, in adding motor oil into a car). Dropper funnels, also called dropping funnels or tap funnels, have a tap to allow the controlled release of a liquid. A flat funnel, made of polypropylene, utilises living hinges and flexible walls to fold flat. The term "funnel" may refer to the chimney or smokestack on a steam locomotive and commonly refers to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ian McDonald (British Author)
Ian McDonald (born 1960) is a British science fiction novelist, living in Belfast. His themes include nanotechnology, postcyberpunk settings, and the impact of rapid social and technological change on non-Western societies. Early life Ian McDonald was born in 1960, in Manchester, to a Scottish father and Irish mother. He moved to Belfast when he was five and has lived there ever since. He lived through the whole of the 'Troubles' (1968–1999), and his sensibility has been permanently shaped by coming to understand Northern Ireland as a post-colonial society imposed on an older culture. Career McDonald sold his first story to a local Belfast magazine when he was 22, and in 1987 became a full-time writer. He has also worked in TV consultancy within Northern Ireland, contributing scripts to the Northern Irish Sesame Workshop production of ''Sesame Tree''. McDonald's debut novel was ''Desolation Road'' (1988), which takes place on a far future Mars in a town that develops around ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Sirens Of Titan
''The Sirens of Titan'' is a comic science fiction novel by Kurt Vonnegut Jr., first published in 1959. His second novel, it involves issues of free will, omniscience, and the overall purpose of human history. Much of the story revolves around a Martian invasion of Earth. Plot This novel begins with an omniscient comment: "Everyone now knows how to find the meaning of life within himself. But mankind wasn't always so lucky." Malachi Constant is the richest man in a future North America. He possesses extraordinary luck that he attributes to divine favor which he has used to build upon his father's fortune. He becomes the centerpoint of a journey that takes him from Earth to Mars in preparation for an interplanetary war, to Mercury with another Martian survivor of that war, back to Earth to be pilloried as a sign of Man's displeasure with his arrogance, and finally to Titan where he again meets the man ostensibly responsible for the turn of events that have befallen him, Winston ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infundibulum (gastropod)
''Infundibulum'' is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails. Description The conical shell is false-umbilicate. The periphery is angular. The base of the shell is nearly flat, or concave. The outer surface is smooth, costate or granular. The outer lip is not lirate within. The columella is inserted in the center of the axis. It is more or less folded above, its edge straight, oblique, not toothed, and without a notch at its base. Species Species within the genus ''Infundibulum'' include: * '' Infundibulum concavum'' (Gmelin, 1791) * ''Infundibulum tomlini'' (Fulton, 1930)Marshall B. A. (2000). "Systematics of the genus ''Infundibulum'' Montfort, 1810 (Gastropoda: Trochidae)". '' The Nautilus'' 114(4)149154. The Indo-Pacific Molluscan Database also includes the following species: * ''Infundibulum aemulans'' A. Adams, 1854 ;Synonyms: * ''Infundibulum (Lamprostoma)'' Swainson, 1840: synonym of ''Trochus'' Linnaeus, 1758 * ''Infund ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopod Limb
All cephalopods possess flexible limbs extending from their heads and surrounding their beaks. These appendages, which function as muscular hydrostats, have been variously termed arms, legs or tentacles. Description In the scientific literature, a cephalopod ''arm'' is often treated as distinct from a ''tentacle'', though the terms are sometimes used interchangeably, often with the latter acting as an umbrella term for cephalopod limbs. Generally, arms have suckers along most of their length, as opposed to tentacles, which have suckers only near their ends.Young, R.E., M. Vecchione & K.M. Mangold 1999Cephalopoda Glossary Tree of Life web project. Barring a few exceptions, octopuses have eight arms and no tentacles, while squid and cuttlefish have eight arms (or two "legs" and six "arms") and two tentacles.Norman, M. 2000. ''Cephalopods: A World Guide''. ConchBooks, Hackenheim. p. 15. "There is some confusion around the terms ''arms'' versus ''tentacles''. The numerous lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infundibulum (tooth)
The infundibulum of a tooth is the funnel-like center that is filled with ''cementum''. The funnel is widest at the top (crown) which is the grinding (occlusal) surface. The infundibulum is also known as the ''dental cup''. Simple tooth infundibula occur most notably in the incisors of horses and other equids, but they also occur in the premolars and molars of ruminant Ruminants (suborder Ruminantia) are hoofed herbivorous grazing or browsing mammals that are able to acquire nutrients from plant-based food by fermenting it in a specialized stomach prior to digestion, principally through microbial actions. The ...s and camelids. The infundibula found in ruminants can get quite complex some with two funneling centers, and with multiple folding in the sides of the cup. These folds produce greater amounts of enamel in vertical curtains that substantially increase the durability of the tooth. The cheek teeth of elephants express this in a slightly different form with the vertical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gallbladder
In vertebrates, the gallbladder, also known as the cholecyst, is a small hollow organ where bile is stored and concentrated before it is released into the small intestine. In humans, the pear-shaped gallbladder lies beneath the liver, although the structure and position of the gallbladder can vary significantly among animal species. It receives and stores bile, produced by the liver, via the common hepatic duct, and releases it via the common bile duct into the duodenum, where the bile helps in the digestion of fats. The gallbladder can be affected by gallstones, formed by material that cannot be dissolved – usually cholesterol or bilirubin, a product of haemoglobin breakdown. These may cause significant pain, particularly in the upper-right corner of the abdomen, and are often treated with removal of the gallbladder (called a cholecystectomy). Cholecystitis, inflammation of the gallbladder, has a wide range of causes, including result from the impaction of gallstones, inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renal Pelvis
The renal pelvis or pelvis of the kidney is the funnel-like dilated part of the ureter in the kidney. It is formed by the covnvergence of the major calyces, acting as a funnel for urine flowing from the major calyces to the ureter. It has a mucous membrane and is covered with transitional epithelium and an underlying lamina propria of loose-to-dense connective tissue. The renal pelvis is situated within the renal sinus alongside the other structures of the renal sinus. The renal pelvis is the location of several kinds of kidney cancer and is affected by infection in pyelonephritis. Clinical significance The renal pelvis is the location of several kinds of kidney cancer and is affected by infection in pyelonephritis. A large "staghorn" kidney stone may block all or part of the renal pelvis. The size of the renal pelvis plays a major role in the grading of hydronephrosis. Normally, the anteroposterior diameter of the renal pelvis is less than 4 mm in fetuses up to 32 weeks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infundibulum Of Uterine Tube
The fallopian tubes, also known as uterine tubes, oviducts or salpinges (singular salpinx), are paired tubes in the human female that stretch from the uterus to the ovaries. The fallopian tubes are part of the female reproductive system. In other mammals they are only called oviducts. Each tube is a muscular hollow organ that is on average between 10 and 14 cm in length, with an external diameter of 1 cm. It has four described parts: the intramural part, isthmus, ampulla, and infundibulum with associated fimbriae. Each tube has two openings a proximal opening nearest and opening to the uterus, and a distal opening furthest and opening to the abdomen. The fallopian tubes are held in place by the mesosalpinx, a part of the broad ligament mesentery that wraps around the tubes. Another part of the broad ligament, the mesovarium suspends the ovaries in place. An egg cell is transported from an ovary to a fallopian tube where it may be fertilized in the ampulla of the tub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethmoidal Infundibulum
The hiatus semilunaris is bounded inferiorly by the sharp concave margin of the uncinate process of the ethmoid bone, and leads into a curved channel, the infundibulum, bounded above by the bulla ethmoidalis and below by the lateral surface of the uncinate process of the ethmoid The ethmoid bone (; from grc, ἡθμός, hēthmós, sieve) is an unpaired bone in the skull that separates the nasal cavity from the brain. It is located at the roof of the nose, between the two orbits. The cubical bone is lightweight due to a .... References External links * Nose {{Anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
