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Excurrent definition is - characterized by a current that flows outward. How to use excurrent in a sentence. ... by a current that flows outward the clam's excurrent siphon. 2: having the axis prolonged to form an undivided main stem or trunk (as in conifers) — compare deliquescent sense 2. First Known Use of excurrent ...


Incurrent and excurrent siphons are the tubular structures that burrowing bivalve molluscs, such as clams, use to feed, respire, reproduce and expel waste into the water, while the body of the bivalve remains buried beneath the surface of the sediment, where it is hidden from predators.


The bivalve's two siphons are situated at the posterior edge of the mantle cavity. There is an inhalant or incurrent siphon, and an exhalant or excurrent siphon. The water is circulated by the action of the gills. Usually water enters the mantle cavity through the inhalant siphon, moves over the gills, and leaves through the exhalant siphon.


Define excurrent. excurrent synonyms, excurrent pronunciation, excurrent translation, English dictionary definition of excurrent. excurrent red spruce adj. 1. a. Running or flowing outward.


Excurrent definition, running out or forth. See more.


Definition of excurrent - (of a vessel or opening) conveying fluid outwards. ‘The basic body form of sponges consists of numerous small incurrent canals called ostia (sing. ostium) and one or more large excurrent opening called oscula (sing. osculum).’


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Mollusk Biology vocab. This is my vocab (assignment due Mon) for Adv Biology--the Mollusks part. STUDY. PLAY. chromatophore. pigment-containing cells that help camouflage cephalopods. excurrent siphon. a tube through which water exits the mantle cavity of a bivalve. hemocoel. the blood-filled space or body cavity of some invertebrates. hemolymph.


Define incurrent. incurrent synonyms, incurrent pronunciation, incurrent translation, English dictionary definition of incurrent. adj. Affording passage to an inflowing current. adj 1. having an inward flow 2. flowing or running in an inward direction adj. carrying or relating to an...


The modified female mantle extended from a point immediately anterior to the incurrent siphon to a point directly ventral and opposite to the posterior-most end of the hinge ligament [ILLUSTRATION FOR FIGURE 2 OMITTED].