spiral valve การใช้

• The spiral valves of Heister are supported by underlying smooth muscle fibers.
• A consequence of the spiral valve constricting the regurgitated.
• A single fold of tissue rolled upon its own axis forms this specialized spiral valve.
• In lampreys, the spiral valve is extremely small, possibly because their diet requires little digestion.
• At this time, the embryo has well-developed external gills and a spiral valve intestine.
• The lamprey intestine has a typhlosole that increases the inner surface like the spiral valve does in some jawed vertebrates.
• A known parasite is the tapeworm " Lithobothrium gracile ", which infests the shark's spiral valve intestine.
• By the time the yolk is fully used, a spiral valve has developed in the intestine and the fish starts to feed.
• This short length is achieved by the spiral valve with multiple turns within a single short section instead of a long tube-like intestine.
• Their small intestines contain an internal partition shaped like a corkscrew, called a spiral valve, which increases the surface area available for food absorption.
• The spiral valve in the latter develops by twisting the whole gut, while the lamprey typhlosole is confined to the mucous membrane of the intestines.
• Hagfish have no spiral valve at all, with digestion occurring for almost the entire length of the intestine, which is not subdivided into different regions.
• A modification of the ileum, the spiral valve is internally twisted or coiled to increase the surface area of the intestine, to increase nutrient absorption.
• Sharks have compensated for this problem by having a spiral valve, or a scroll valve, inside the intestine to increase the absorbent surface of the intestine.
• Also, the original valves of the conus arteriosus have been replaced by a spiral valve that divides it into two parallel parts, thereby helping to keep the two bloodstreams separate.
• His name is lent to the plant genus " Heisteria ", as well as to the spiral valves of Heister, defined as anatomical folds of the cystic duct.
• Additional parasites that may be found in this ray's spiral valve intestine include " Eimeria chollaensis " sp . nov . and " Rhinebothrium " spp.
• Oxygenated blood from the lungs and de-oxygenated blood from the ventricle before being pumped via a spiral valve to the appropriate vessel, the aorta for oxygenated blood and pulmonary artery for deoxygenated blood.
• While the alimentary system is primitive in nature and lacks an expanded stomach region, it is specialized by an independently acquired complex spiral valve, comparable to that in elasmobranchs and many bony fish and similar to that found in some sharks.
• This species was first described ( along with " Marsupiobothrium gobelinus " ) from a specimen collected from the spiral valve digestive organ of a goblin shark ( " Mitsukurina owstoni " ) caught in New South Wales in Australia.