Class Enteropneusta Maintenance Functions |Miller and Harley Zoology chapter 17
Автор: GHAZIAN ZOOLOGIST
Загружено: 2021-09-12
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#millerandharleyzoology #Enteropneusta #chapter17
Maintenance Functions
Cilia and mucus assist acorn worms in feeding. Detritus and
other particles adhere to the mucus-covered proboscis. Tracts
of cilia transport food and mucus posteriorly and ventrally.
Ciliary tracts converge near the mouth and form a mucoid
string that enters the mouth. Acorn worms may reject some
substances trapped in the mucoid string by pulling the proboscis against the collar. Ciliary tracts of the collar and trunk
transport rejected material and discard it posteriorly.
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