Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea within the phylum Annelida. They are closely related to the oligochaetes, which include the earthworm, and like them have soft, muscular segmented bodies that can lengthen and contract. Both groups are hermaphrodites … Se mer Some 680 species of leech have been described, of which around 100 are marine, 480 freshwater and the remainder terrestrial. Among Euhirudinea, the true leeches, the smallest is about 1 cm (1⁄2 in) long, and the largest … Se mer Bites Leech bites are generally alarming rather than dangerous, though a small percentage of people have severe allergic or anaphylactic reactions and require urgent medical care. Symptoms of these reactions include red … Se mer Leeches show a remarkable similarity to each other in morphology, very different from typical annelids which are cylindrical with a fluid-filled space, the coelom (body cavity). In leeches, most of the coelom is filled with botryoidal tissue, a loose connective tissue … Se mer • Ruppert, Edward E.; Fox, Richard S.; Barnes, Robert D. (2004). Invertebrate Zoology, 7th Edition. Cengage Learning. ISBN 978-81-315-0104-7. Se mer • Media related to Hirudinea at Wikimedia Commons • Data related to Hirudinea at Wikispecies Se mer NettetTheir heads are formed by fusion of varying numbers of segments, and their brains are formed by fusion of the ganglia of these segments and encircle the esophagus. The respiratory and excretory systems of arthropods vary, depending as much on their environment as on the subphylum to which they belong.
ADW: Ascaris lumbricoides: CLASSIFICATION
http://www.naturenorth.com/fall/leeches/Leeches_2.html Nettetleech ý nghĩa, định nghĩa, leech là gì: 1. a type of worm that lives in wet places and fastens itself onto the bodies of humans and animals…. Tìm hiểu thêm. new city ex 2022
Very Large Earthworm (Amynthas aspergillum 參狀遠環蚓 or
NettetMichael Mosley finds out just how much blood leeches can consume and their importance to modern medicine. Subscribe to Earth Lab: http://bit.ly/SubscribeToEa... NettetEcdysozoa: sounds (13) Phylum Nematoda roundworms. Nematoda: information (1) Nematoda: pictures (7) Class Secernentea. Order Ascaridida. Family Ascarididae. Genus Ascaris intestinal roundworms. Species Ascaris lumbricoides human intestinal roundworm. NettetLeeches belong to the phylum Annelida and subphylum Hirudinea. They have a soft, muscular and segmented body that can both lengthen and contract. They are usually … internet dept. dcbg chunghwa telecom co. ltd