BIOL 225 Study Guide - Quiz Guide: Gastrovascular Cavity, Symmetry In Biology, Intracellular Parasite
28 Dec 2019
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Chapter 14: acoelomate (absence of a body cavity surrounding the gut) Suck food into intestine through extension of pharynx. Beating flagella drive fluid down to ducts to draw fluid through. Flat & ribbon like crawling and maneuvering. Epithelium gland cells mucus for prey capture & protection. Cephalized nervous system longitudinal nerve cords. Ganglion cell mass (brain) on anterior with neurons. Diverticula abnormal side pockets in a hollow organ (intestine) Ovary 3 lobed structure, makes eggs. Seminal receptacle stores sperm from another fluke. Gonopore egg and sperm exit, sperm from another fluke enter. Clonorchis abdominal pain & cirrhosis of liver = death. Schistosoma eggs in intestine wall causes bloody diarrhea, cause ulcerations. Clonorchis sinensis (adult lives in bile duct) Miracidium enter tissue to form sporocyst redia. Rediae pass to liver of cell to make cercariae. Cercariae go into water and go unter scale of fish muscles. Infect humans at metacercarial cyst stage when eating raw/undercooked fish, cyst goes to intestine.
