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Lacrimal apparatus




Lacrimal apparatus
The lacrimal apparatus
Details
Identifiers
LatinApparatus lacrimalis
MeSHD007765
TAA15.2.07.056
FMA55605
Anatomical terminology

The lacrimal apparatus is the physiological system containing the orbital structures for tear production and drainage.[1]
It consists of:


The blood supply to the lacrimal gland is provided by the ophthalmic artery with its branch - the lacrimal artery, while the venous blood is drained from this region via the superior ophthalmic vein. The lacrimal system is made up of a secretory system, which produces tears, and an excretory system, which drains the tears. The lacrimal gland is primarily responsible for producing emotional or reflexive tears. As tears are produced, some fluid evaporates between blinks, and some is drained through the lacrimal punctum. The tears that are drained through the punctum will eventually be drained through the nose. Any excess fluid that did not go into the punctum will fall over the eyelid, which produces tears that are cried.[2]

References


This article incorporates text in the public domain from page 1028 of the 20th edition of Gray's Anatomy (1918)

  1. ^ Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainesville, Florida: Triad Publishing Company, 1990.
  2. ^ Lutz, Tom (1999). Crying : the natural and cultural history of tears (1. ed.). New York: W. W. Norton. pp. 69–70 . ISBN 0-393-04756-3.

External links











Categories: Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918) | Human eye anatomy | Eye stubs








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