01:146:328 Lecture Notes - Lecture 2: Cytolysis, Esophagus, Digenea
7 Mar 2018
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Document Summary
Traditional parasites are in the protista and animalia kingdoms. Phylum platyhelminthes: flatworms, bilateral symmetry acoelomate (don"t have a body spaces, class trematoda, subclass digenea i. ii. iii. iv. At least 2 hosts in life cycle (better have a dh and at least 1 ih in cycle drawing) Behavior measured by rcd (rate of change of direction) (how often does it change direction) and swimming speed: when miricidium is far from snail, rcd low (straight line) and fast swimming. If close to a snail, rcd increases and slow swimming. 2: ensures miricidium doesn"t exit active space of snail iii. g. Species that encysts on plants: cercariaw must find plant, attach to the plant, post-cecerabular glands mucus attach, shed tail, cystogenous glands form cyst and create metacercaria that is. 4: post acetabular glands, mucus, attachment, shed tail, pre-acetabular glands = penetration glands, b , c . In dh and migrates through body of dh and develops into adult worm.
