. The animans and man; an elementary textbook of zoology and human physiology. ied. How does Paramoecium (fig. 13)differ from Amoeba in form andmovement? Has the body ananterior and a posterior end? Thedelicate, short, thread-like pro-cesses, on the surface of the body,which beat about very rapidly inthe water are called cilia, and theyare simply fine prolongations of thebody protoplasm. What is theirfunction? Note a fine cuticle cov-ering the body. Note also manyminute oval sacs lying side by sidein the ectosarc. These are calledtrichocysts and from each a finethread can be thrust out. Note o
. The animans and man; an elementary textbook of zoology and human physiology. ied. How does Paramoecium (fig. 13)differ from Amoeba in form andmovement? Has the body ananterior and a posterior end? Thedelicate, short, thread-like pro-cesses, on the surface of the body,which beat about very rapidly inthe water are called cilia, and theyare simply fine prolongations of thebody protoplasm. What is theirfunction? Note a fine cuticle cov-ering the body. Note also manyminute oval sacs lying side by sidein the ectosarc. These are calledtrichocysts and from each a finethread can be thrust out. Note on one side, beginning atthe anterior end, the buccal grooveleading into the interior throughthe gullet. Observe also that bythe action of the cilia in the buc-cal groove food-particles are swept TIG. 13. raramoeciuwi sp.; r note the body-wall, cilia, into the gullet. Rejected or wastebuccal groove, gullet, con- particles are ejected from the body tractile vacuoles and nu- occasionall Where? Note aboutclei. (Greatly magnified; J from life.) midway of theParamoec^^ ovoid.
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