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Blood-spurting
Blood squirt (blood spurt, blood spray, blood gush, or blood jet) is the effect when an artery is ruptured. Blood pressure causes the blood to bleed out at a rapid, intermittent rate in a spray or jet, coinciding with the pulse, rather than the slower, but steady flow of venous bleeding. Also known as arterial bleeding, arterial spurting, or arterial gushing, the amount of blood loss can be copious, occur very rapidly, and can led to death by a process called exsanguination. Anatomy In cut carotid arteries with 100 mL of blood through the heart at each beat (at 65 beats a minute), a completely severed artery will spurt blood for about 30 seconds and the blood will not spurt much higher than the human head. If the artery is just nicked, on the other hand, the blood will spurt longer but will be coming out under pressure and spraying much farther. To prevent hand ischemia, there is a "squirt test" that involves squirting blood from the radial artery, which is used in intraope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artery
An artery (plural arteries) () is a blood vessel in humans and most animals that takes blood away from the heart to one or more parts of the body (tissues, lungs, brain etc.). Most arteries carry oxygenated blood; the two exceptions are the pulmonary and the umbilical arteries, which carry deoxygenated blood to the organs that oxygenate it (lungs and placenta, respectively). The effective arterial blood volume is that extracellular fluid which fills the arterial system. The arteries are part of the circulatory system, that is responsible for the delivery of oxygen and nutrients to all cells, as well as the removal of carbon dioxide and waste products, the maintenance of optimum blood pH, and the circulation of proteins and cells of the immune system. Arteries contrast with veins, which carry blood back towards the heart. Structure The anatomy of arteries can be separated into gross anatomy, at the macroscopic level, and microanatomy, which must be studied with a microscop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allen's Test
In medicine, Allen's test or the Allen test is a medical sign used in physical examination of arterial blood flow to the hands. It was named for Edgar Van Nuys Allen, who described the original version of the test in 1942. An altered test, first suggested by Irving S Wright in 1952, has almost universally replaced the original method in contemporary medical practice. The alternative method is often referred to as the modified Allen's test or modified Allen test. Method Original test The original test proposed by Allen is performed as follows: # The patient is asked to clench both fists tightly for 1 minute at the same time. # Pressure is applied over both radial arteries simultaneously so as to occlude them. # The patient then opens the fingers of both hands rapidly, and the examiner compares the colour of both. The initial pallor should be replaced quickly by rubor. # The test may be repeated, this time occluding the ulnar arteries. Allen's test looks for abnormal circulation. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemolymph
Hemolymph, or haemolymph, is a fluid, analogous to the blood in vertebrates, that circulates in the interior of the arthropod (invertebrate) body, remaining in direct contact with the animal's tissues. It is composed of a fluid plasma in which hemolymph cells called hemocytes are suspended. In addition to hemocytes, the plasma also contains many chemicals. It is the major tissue type of the open circulatory system characteristic of arthropods (e.g. arachnids, crustaceans and insects). In addition, some non-arthropods such as molluscs possess a hemolymphatic circulatory system. Oxygen-transport systems were long thought unnecessary in insects, but ancestral and functional hemocyanin has been found in the hemolymph. Insect "blood" generally does not carry hemoglobin, although hemoglobin may be present in the tracheal system instead and play some role in respiration. Method of transport In the grasshopper, the closed portion of the system consists of tubular hearts and an aort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vomit
Vomiting (also known as emesis and throwing up) is the involuntary, forceful expulsion of the contents of one's stomach through the mouth and sometimes the nose. Vomiting can be the result of ailments like food poisoning, gastroenteritis, pregnancy, motion sickness, or hangover; or it can be an after effect of diseases such as brain tumors, elevated intracranial pressure, or overexposure to ionizing radiation. The feeling that one is about to vomit is called nausea; it often precedes, but does not always lead to vomiting. Impairment due to alcohol or anesthesia can cause inhalation of vomit, leading to suffocation. In severe cases, where dehydration develops, intravenous fluid may be required. Antiemetics are sometimes necessary to suppress nausea and vomiting. Self-induced vomiting can be a component of an eating disorder such as bulimia, and is itself now classified as an eating disorder on its own, purging disorder. Complications Aspiration Vomiting is dangerous if ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armored Cricket
''Acanthoplus discoidalis'' is a species in the Hetrodinae, a subfamily of the katydid family (Tettigoniidae). Like its closest relatives, ''Acanthoplus discoidalis'' variously bears common names such as armoured katydid, armoured ground cricket, armoured bush cricket, corn cricket, setotojane and . The species is native to parts of Angola, Namibia, Botswana, Zimbabwe and South Africa. Note that the common names are characteristically misleading; the species is not closely related to true crickets and "katydids" which originally belonged to the unrelated subfamily Pseudophyllinae. Description ''Acanthoplus discoidalis'' is a wide-bodied, flightless species that typically grows to a body length of about 5 cm/1.95 inches. The pronotum bears several sharp, conical spines. The mandibles, or main biting jaws, are powerful; they can inflict a painful nip and they permit the insect to feed on material such as tough herbage or carrion. Another defense against predators is refle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antipredator Adaptation
Anti-predator adaptations are mechanisms developed through evolution that assist prey organisms in their constant struggle against predators. Throughout the animal kingdom, adaptations have evolved for every stage of this struggle, namely by avoiding detection, warding off attack, fighting back, or escaping when caught. The first line of defence consists in avoiding detection, through mechanisms such as camouflage, masquerade, apostatic selection, living underground, or nocturnality. Alternatively, prey animals may ward off attack, whether by advertising the presence of strong defences in aposematism, by mimicking animals which do possess such defences, by startling the attacker, by signalling to the predator that pursuit is not worthwhile, by distraction, by using defensive structures such as spines, and by living in a group. Members of groups are at reduced risk of predation, despite the increased conspicuousness of a group, through improved vigilance, predator confusion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autohaemorrhaging
Autohaemorrhaging, or reflex bleeding, is the action of animals deliberately ejecting blood from their bodies. Autohaemorrhaging has been observed as occurring in two variations. In the first form, blood is squirted toward a predator. The blood of these animals usually contains toxic compounds, making the behaviour an effective chemical defence mechanism. In the second form, blood is not squirted, but is slowly emitted from the animal's body. This form appears to serve a deterrent effect, and is used by animals whose blood does not seem to be toxic. Most animals that autohaemorrhage are insects, but some reptiles also display this behaviour. Some organisms have shown an ability to tailor their autohaemorrhaging response. Armoured crickets will projectile autohaemorrhage over longer distances when attacked from the side, compared to being attacked from an overhead predator. Insects Six orders of insects have been observed to utilize this defence mechanism. *Beetles **Meloidae ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lampaul-Guimiliau
Lampaul-Guimiliau (; br, Lambaol-Gwimilio) is a commune in the Finistère department and administrative region of Brittany in north-western France. It is noted for its parish close. Etymology The place name element ''lan'' or ''lam'' (''llan'' in Welsh) originally signified an enclosure, particularly a sacred enclosure, and later came to mean a church. The name ''Lampaul'' therefore means ''church or enclosure dedicated to St Paulinus''. St Pol (Paol, Paul, or Paulinus) was one of the seven founder saints of Brittany, a 6th-century Welsh missionary closely associated with the Léon diocese of Brittany, in which Lampaul-Guimiliau is situated. Parish closes are a distinctive feature of this diocese, although they are not entirely confined to it. In the Middle Ages, the village was part of the parish of Guimiliau. This means ''township of Miliau'', a Breton saint of the 6th or 9th century. Later, rising prosperity and economic growth brought separate status, with a separate paris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retable
A retable is a structure or element placed either on or immediately behind and above the altar or communion table of a church. At the minimum it may be a simple shelf for candles behind an altar, but it can also be a large and elaborate structure. A retable which incorporates sculptures or painting is often referred to as an altarpiece. According to the Getty ''Art & Architecture Thesaurus Online'', "A 'retable' is distinct from a ' reredos'; while the reredos typically rises from ground level behind the altar, the retable is smaller, standing either on the back of the altar itself or on a pedestal behind it. Many altars have both a reredos and a retable." 'Retable' This distinction is not always upheld in common use, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Miliau
St Miliau or Miliav is a Breton saint and eponym of the village of Guimiliau, where he is particularly venerated. He is said to be a good saint to invoke in cases of rheumatism. St Miliau is a figure of some importance in Breton cult and legend. He is sometimes represented as a cephalophore, i.e. holding his own severed head. It is hard to be sure what historical core there might be to the legends. Legend The legend of St Miliau, as retold in Brittany, pictures him as a good and just prince, slain by his evil brother. Miliau was the son of Budic and grandson of Alain le Long, kings of Armorica in Brittany. His brothers were Theodoric and Rivod. Miliau is said to have married Haurille and their son was St Melar. Miliau was famous as a protector and benefactor of the poor, and is represented as dividing his cloak with a beggar, like St Martin of Tours. When he succeeded to the throne, Rivod had him assassinated by decapitation, around 531. A few years later, Rivod eliminated Melar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iconography
Iconography, as a branch of art history, studies the identification, description and interpretation of the content of images: the subjects depicted, the particular compositions and details used to do so, and other elements that are distinct from artistic style. The word ''iconography'' comes from the Greek ("image") and ("to write" or ''to draw''). A secondary meaning (based on a non-standard translation of the Greek and Russian equivalent terms) is the production or study of the religious images, called "icons", in the Byzantine and Orthodox Christian tradition (see Icon). This usage is mostly found in works translated from languages such as Greek or Russian, with the correct term being "icon painting". In art history, "an iconography" may also mean a particular depiction of a subject in terms of the content of the image, such as the number of figures used, their placing and gestures. The term is also used in many academic fields other than art history, for example semiotics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinnamasta
Chhinnamasta ( sa, छिन्नमस्ता, , "She whose head is severed"), often spelled Chinnamasta, and also called Ch(h)innamastika and Prachanda Chandika and Jogani Maa (in western states of India), is a Hindu goddess (Devi). She is one of the Mahavidyas, ten goddesses from the esoteric tradition of Tantra, and a ferocious aspect of Mahadevi, the Hindu Mother goddess. The self-decapitated nude goddess, usually standing or seated on a divine copulating couple, holds her own severed head in one hand and a scimitar in another. Three jets of blood spurt out of her bleeding neck and are drunk by her severed head and two attendants. Chhinnamasta is a goddess of contradictions. She symbolises both aspects of Devi: a life-giver and a life-taker. She is considered both a symbol of sexual self-control and an embodiment of sexual energy, depending upon interpretation. She represents death, temporality, and destruction as well as life, immortality, and recreation. The godde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
