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单词 rectal gland
释义

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rectal gland
rectal gland n. any gland or gland-like structure of the rectum; esp. (a) Zoology a finger-shaped gland in cartilaginous fishes that secretes sodium chloride; (b) Entomology = rectal pad n.
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the world > animals > animal body > general parts > substance or secretion and excretion > [noun] > gland that excretes into rectum
rectal gland1871
the world > animals > fish > superclass Agnatha > [noun] > class Chondrichthyes > member of > parts of
rectal gland1871
ampulla of Lorenzini1898
1871 W. Allingham Fistula xv. 217 The ulceration spreads upwards and downwards,..the rectal glands become affected, and also indurations may form in the groins.
1877 T. H. Huxley Man. Anat. Invertebr. Animals 411 The walls of the rectum itself are raised into six ridges, which project into its interior and are abundantly supplied with tracheæ; these are the so-called rectal glands.
1925 R. E. Snodgrass Anat. & Physiol. Honeybee vi. 165 Nothing definite is known of the function of the rectal glands.
1974 D. Webster & M. Webster Compar. Vertebr. Morphol. xvii. 442 Excess salt is actively excreted by the rectal, or digitiform gland [of chondrichthyeans].
1986 M. Ridley Animal Behaviour (BNC) 129 Solenopsis..releases its trail pheromone from its Pavan's gland; Myrmica from its poison gland; Lasius from its rectal gland.
extracted from rectaladj.
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