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The hydrocaulus is usually surrounded by a sheath of chitin and proteins called the perisarc. In some species, this extends upwards to also enclose part of the polyps, in some cases including a closeable lid through which the polyp may extend its tentacles. [2] In any given colony, the majority of polyps are specialized for feeding.
Ram feeding and suction feeding are on opposite sides of the feeding spectrum, where extreme ram feeding is when a predator swims over an immobile prey item with open jaws to engulf the prey. Extreme suction feeding is demonstrated by sit-and-wait predators that rely on rapid depression of the jaws to capture prey (e.g., frogfish, Antennariidae).
A nutrient enema, also known as feeding per rectum, rectal alimentation, or rectal feeding, is an enema administered to provide nutrition in cases where normal eating is not possible. In modern medicine, nutrient enemas have been superseded by tube feeding and parenteral nutrition (intravenous feeding).
In standard medicine, the most frequent uses of enemas are to relieve constipation and for bowel cleansing before a medical examination or procedure; [5] also, they are employed as a lower gastrointestinal series (also called a barium enema), [6] to treat traveler's diarrhea, [7] as a vehicle for the administration of food, water or medicine ...
Zone 6 forms the lateral edge of the endostyle groove and is very distinct from the bands of previous zones, after undergoing the paraldehyde fuchsin procedure, small cytoplasmic granulation is seen. [4] Zone 7 is of particular interest because of the ability of this zone to trap radioactive iodine, which is a primary function of the thyroid.
The Stamm gastrostomy is an open technique, [4] requiring an upper midline laparotomy and gastrotomy, with the catheter brought out in the left hypochondrium.It was first devised in 1894 by the American Gastric Surgeon, Martin Stamm (1847–1918), who was educated greatly in surgery when he visited Germany.
Standardization – procedures which maintain methods and equipment as constant as possible. Without standardization one cannot determine whether measurements of yearly differences in relative abundance are caused by actual fluctuations in stock abundance or by differences in the measurement procedure used.
Percutaneous endoscopic gastrostomy (PEG) is an endoscopic medical procedure in which a tube (PEG tube) is passed into a patient's stomach through the abdominal wall, most commonly to provide a means of feeding when oral intake is not adequate (for example, because of dysphagia or sedation).