| 单词 | lacrimal sac |
| 释义 | > as lemmaslacrimal sac lacrimal sac n. the dilated upper portion of the nasolacrimal duct, into which the lacrimal canaliculi open. ΚΠ 1698 J. Keill Anat. Humane Body 154 They are the two Orifices of the Lachrymal Sack, which is situated in this corner, upon the Os Lachrymale. 1853 Lancet 18 June 553/1 The morbid action, creeping through the puncta lachrymalia and along the canaliculi or lachrymal ducts, reaches the lachrymal sac. 2011 Brit. Med. Jrnl. 23 July 206/1 Rarely, a firm mass may represent a lacrimal sac tumour and is a red flag sign. < as lemmas |
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