segmental : Idioms & Phrases
segmental arch
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noun a shallow arch; an arch that is less than a semicircle
WordNet
Segmental duct
(Anat.) , the primitive duct of the embryonic excretory organs which gives rise to the Wolffian duct and ureter; the pronephric duct.
Webster 1913
Segmental organs
- .
(a) (Anat.) The embryonic excretory organs of vertebrates, consisting primarily of the segmental tubes and segmental ducts .(b) (Zoöl.) The tubular excretory organs, a pair of which often occur in each of several segments in annelids. They serve as renal organs, and often, also, as oviducts and sperm ducts. See Illust. underSipunculacea .
Webster 1913
Segmental tubes
(Anat.) , the tubes which primarily open into the segmental duct, some of which become the urinary tubules of the adult.
