Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.
normal pore canals — (Class Ostracoda): Numerous perforations through valve with chemosensory and tactile sensilla, which communicate with nerve cells in the underlying epidermis; may be simple (open) or covered with sieve plates [Cohen, Peterson, and Maddocks, in… … Crustacea glossary
radial pore canals — (Class Ostracoda): Modified normal pores located at free margins of valves, housing nerve filaments that lead from tactile sensilla to nerve cells in the underlying epidermis [Cohen, Peterson, and Maddocks, in press] … Crustacea glossary
pore canal — (Class Ostracoda): Minute tubular passageway extending through shell [McLaughlin, 1980]. (Class Ostracoda): One of variously developed, minute canals extending through valve; opens via pore. (false, normal, radial, sieve type) [Stachowitsch,… … Crustacea glossary
cephalic sensory canals — the head canals opening to the surface in pores and containing neuromasts (sometimes the canals are lost and the neuromasts are exposed). Similar to the trunk lateral line in structure and function but having different innervation. The following… … Dictionary of ichthyology
dermal pore — noun : one of the minute openings in the surface of a sponge that give access to the incurrent canals : ostium … Useful english dictionary
polyphenol layer — A silver binding product exuded from the tip of the pore canals, formerly considered as a sublayer in the epicuticle … Dictionary of invertebrate zoology
zone of concrescence — (Class Ostracoda): A clear marginal band extending from the free margin to the line of concrescence, formed by a flange like outgrowth of the outer lamella and traversed by radial pore canals. (Syn. fused zone) [Cohen, Peterson, and Maddocks, in… … Crustacea glossary
reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… … Universalium
Foramen — A natural opening. Although a foramen is usually through bone, it can be an opening through other types of tissue, as with the foramen ovale. * * * An aperture or perforation through a bone or a membranous structure. SYN: trema (1). [L. an… … Medical dictionary
dam — dam1 /dam/, n., v., dammed, damming. n. 1. a barrier to obstruct the flow of water, esp. one of earth, masonry, etc., built across a stream or river. 2. a body of water confined by a dam. 3. any barrier resembling a dam. v.t. 4. to furnish with a … Universalium
