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A three-branched intestine runs across almost the entire body, and includes a single anterior and two posterior branches. The planarian intestine is a blind sac, having no exit cavity, and therefore planarians uptake food and egest waste through the same orifice, located near the middle of the ventral body surface. [5]
The disease is caused by several flukes of the genus Schistosoma, which can bore through human skin; those most at risk use infected bodies of water for recreation or laundry. [ 27 ] In 2000, an estimated 45 million people were infected with the beef tapeworm Taenia saginata and 3 million with the pork tapeworm Taenia solium . [ 44 ]
Liver fluke infections cause serious medical and veterinary diseases. Fasciolosis of sheep, goats and cattle, is the major cause of economic losses in dairy and meat industry. [5] Fasciolosis of humans produces clinical symptoms such as fever, nausea, swollen liver, extreme abdominal pain, jaundice and anemia. [6]
Neoblasts are somatic adult stem cells that are abundant in planarians. Morphologically, neoblasts are round and small, 5 to 10 μm, and have a large nucleus and scant cytoplasm. [1] They are the only dividing planarian cells. [3] Neoblasts are found in the planarian parenchyma across the entire body, outside organ systems. [1]
Other rarer diseases affecting the small intestine include Curling's ulcer, blind loop syndrome, Milroy disease and Whipple's disease. Tumours of the small intestine include gastrointestinal stromal tumours, lipomas, hamartomas and carcinoid syndromes. [5]: 879–887 Diseases of the small intestine may present with symptoms such as diarrhoea ...
Bipalium is a genus of large predatory land planarians. They are often loosely called "hammerhead worms" or "broadhead planarians" because of the distinctive shape of their head region. Land planarians are unique in that they possess a "creeping sole", a highly ciliated region on the ventral epidermis that helps them to creep over the substrate ...
The global supplement market reached more than $485 billion in 2024, and some six in 10 adults are taking at least one dietary supplement a month, according to the U.S. Centers for Disease Control ...
Metagonimiasis is a parasitic infection caused by the intestinal trematode species, Metagonimus yokogawai. [20] The disease affects both humans (and animals) and is primarily found in regions where people consume raw or undercooked freshwater fish such as in East Asia, Siberia, Manchuria, the Balkan states, Israel and Spain.