Lacrimal sac
Lacrimal Sac
The Lacrimal Sac (pronounced: LAK-ri-mal sak) is an integral part of the human eye's lacrimal apparatus, which is responsible for the production and drainage of tears.
Etymology
The term "Lacrimal" is derived from the Latin word "lacrima," which means "tear." The term "sac" is derived from the Latin word "saccus," which means "bag."
Function
The Lacrimal Sac acts as a reservoir for tears. It collects tears from the lacrimal puncta, small openings located at the inner corner of the upper and lower eyelids. The tears then drain into the nasolacrimal duct, which empties into the nasal cavity.
Related Terms
- Lacrimal Apparatus: The collective term for the structures that produce and drain tears.
- Lacrimal Puncta: Small openings at the inner corner of the eyelids where tears enter the lacrimal sac.
- Nasolacrimal Duct: The tube that carries tears from the lacrimal sac to the nasal cavity.
- Tears: The fluid produced by the lacrimal apparatus to lubricate the eyes.
Diseases and Conditions
- Dacryocystitis: An infection of the lacrimal sac, often caused by a blockage in the nasolacrimal duct.
- Dacryocystorhinostomy: A surgical procedure to create a new tear drain between the lacrimal sac and the nasal cavity when the nasolacrimal duct is blocked.
External links
- Medical encyclopedia article on Lacrimal sac
- Wikipedia's article - Lacrimal sac
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski