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https://quizlet.com/11615807/bio-lab-practical-exam-flash-cards/
Planarian support system. hydrostatic skeleton. Planarian Segmentation. No segmentation. Planarian Appendages. No appendages. Planarian Nervous system. brain w/ 2 ventral nerve cords, ladderlike nervous system. Earthworm symmetry. bilateral. Earthworm tissue organization. 3 …
https://skeletalphylum.weebly.com/platyhelminthes.html
Platyhelminthes, or Flatworms, are the simplest kind of worms. There are about 20,000 species in this group. They are found in many places and can be free living or parasitic. A parasite lives off of another living thing called a host and can be harmful. One of the most known flatworms is the tapeworm.
http://bio1903.nicerweb.com/Locked/media/lab/animalia/diversityI/key1152.html
Excretory System: metanephridia on each segment Locomotion: peristalsis with logitudina; and circular muscles Support System: coelomic fluid acts as hydrostatic skeleton
https://www.britannica.com/animal/Planaria
Other articles where Planaria is discussed: nervous system: Simple bilateral systems: …a free-living flatworm such as Planaria consists of a brain, longitudinal nerve cords, and peripheral nerve plexuses (interlacing networks of peripheral nerves; from Latin plectere, “to braid”). The brain, located in the anterior portion of the animal, is composed of two cephalic ganglia joined by a ...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3552358/
Nov 09, 2012 · Planarians are members of the Platyhelminthes (flatworms). These animals have evolved a remarkable stem cell system. A single pluripotent adult stem cell type (“neoblast”) gives rise to the entire range of cell types and organs in the planarian body plan, including a brain, digestive-, excretory-, sensory- and reproductive systems.Cited by: 196
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4744845/
Freshwater planarians have a complex body-wall musculature that functions mainly as a skeletal support and during locomotion. In addition, the digestive system consists of a highly muscular tubular organ, the pharynx, and a highly ramified gut surrounded by enteric musculature that mediates peristaltic movements during food intake and digestion.Cited by: 24
https://quizlet.com/37957604/animal-phyla-and-system-functions-flash-cards/
Animal Phyla and system functions. Name,Symmetry,Embryonic tissue layers, Digestive System, circulatory system, respiratory organs, excretory organs, support/skeletal system,nervous system ... (planaria) flatworms. Planaria 8 functions. bilateral,three embryonic tissue layer, 1-way (intestine),no circulatory system (diffusion), no respiratory ...
https://www.biologycorner.com/worksheets/articles/planarian.html
Free-living flatworms like the planaria are grouped into the Class Turbellaria. The most common species studied in the lab is the brown planaria, Dugesia. The animal has an acoelomate body (no internal cavity to hold organs), no anus and lacks a circulatory system.
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