Search results
Results From The WOW.Com Content Network
The idea of a tooth worm is a theory of the cause of dental caries, periodontitis and toothaches. Once widespread, the belief is now obsolete, having been superseded by more scientific rationales. It was supposed that the disease was caused by small worms resident within the tooth, eating it away. [1]
Amphisbaenia / æ m f ɪ s ˈ b iː n i ə / (called amphisbaenians or worm lizards) is a group of typically legless lizards, [2] comprising over 200 extant species. Amphisbaenians are characterized by their long bodies, the reduction or loss of the limbs, and rudimentary eyes.
A Sumerian text from 5000 BC describes a "tooth worm" as the cause of caries. [165] Evidence of this belief has also been found in India, Egypt, Japan, and China. [160] Unearthed ancient skulls show evidence of primitive dental work. In Pakistan, teeth dating from around 5500 BC to 7000 BC show nearly perfect holes from primitive dental drills ...
Gongylonema pulchrum was first named and presented with its own species by Molin in 1857. The first reported case was in 1850 by Dr. Joseph Leidy, when he identified a worm "obtained from the mouth of a child" from the Philadelphia Academy (however, an earlier case may have been treated in patient Elizabeth Livingstone in the seventeenth century [2]).
In extremely rare cases, Wilson says a worm’s cyst can block the flow of cerebrospinal fluid, causing life-threatening brain swelling. When this happens, the worm has to be surgically removed.
The platypus is a carnivore, feeding on annelid worms, insect larvae, freshwater shrimp, and yabby that it digs out of the riverbed with its snout or catches while swimming. It carries prey to the surface in cheek-pouches before eating it. [ 75 ]
Hammerhead worms are a part of the phylum Platyhelminthes, which includes all flatworms. This genealogical membership gives them the ability to become two different, genetically identical ...
Vestigial teeth in narwhal. [101] Rudimentary digits of Ateles geoffroyi, Colobus guereza, and Perodicticus potto. [102] Vestigial dental primordia in the embryonic tooth pattern in mice. [103] Reduced or absent vomeronasal organ in humans and Old World monkeys. [104] [105] Presence of non-functional sinus hair muscles in humans used in whisker ...