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Sci-Tech Dictionary:

lacrimal sac

(′lak·rə·məl ′sak)

(anatomy) The dilation at the upper end of the nasolacrimal duct within the medial canthus of the eye. Also known as dacryocyst.


 
 
Medical Dictionary: lacrimal sac

n.

The upper portion of the nasolacrimal duct into which the two lacrimal ducts empty. Also called dacryocyst, tear sac.

 
WordNet: lacrimal sac
Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: either of the two dilated ends of the lacrimal ducts at the nasal ends of the eyes that fill with tears secreted by the lacrimal glands
  Synonyms: tear sac, dacryocyst


 
Wikipedia: lacrimal sac
Lacrimal sac
Gray896.png
The lacrimal apparatus. Right side. (Lacrimal sac visible at upper right.)
Gray894.png
The tarsi and their ligaments. Right eye; front view. (Lacrimal sac visible at middle right.)
Latin saccus lacrimalis
Gray's subject #227 1028
Artery angular artery
Dorlands/Elsevier s_01/12717293

The lacrimal sac, is the upper dilated end of the nasolacrimal duct, and is lodged in a deep groove formed by the lacrimal bone and frontal process of the maxilla.

It is oval in form and measures from 12 to 15 mm. in length; its upper end is closed and rounded; its lower is continued into the nasolacrimal duct.

Its superficial surface is covered by a fibrous expansion derived from the medial palpebral ligament, and its deep surface is crossed by the lacrimal part of the Orbicularis oculi , which is attached to the crest on the lacrimal bone.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.


 
 

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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company Read more
WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Lacrimal sac" Read more

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