What does nasolacrimal duct mean?
Definitions for nasolacrimal duct
na·so·lacrimal duct
This dictionary definitions page includes all the possible meanings, example usage and translations of the word nasolacrimal duct.
Princeton's WordNet
nasolacrimal ductnoun
a duct that carries tears from the lacrimal sac to the nasal cavity
Wiktionary
nasolacrimal ductnoun
The tear duct.
Wikipedia
Nasolacrimal duct
The nasolacrimal duct (also called the tear duct) carries tears from the lacrimal sac of the eye into the nasal cavity. The duct begins in the eye socket between the maxillary and lacrimal bones, from where it passes downwards and backwards. The opening of the nasolacrimal duct into the inferior nasal meatus of the nasal cavity is partially covered by a mucosal fold (valve of Hasner or plica lacrimalis). Excess tears flow through nasolacrimal duct which drains into the inferior nasal meatus. This is the reason the nose starts to run when a person is crying or has watery eyes from an allergy, and why one can sometimes taste eye drops. For the same reason when applying some eye drops it is often advised to close the nasolacrimal duct by pressing it with a finger to prevent the medicine from escaping the eye and having unwanted side effects elsewhere in the body. Like the lacrimal sac, the duct is lined by stratified columnar epithelium containing mucus-secreting goblet cells, and is surrounded by connective tissue.
ChatGPT
nasolacrimal duct
The nasolacrimal duct is a narrow tubular structure in the human body that serves as a pathway for the drainage of tears. It extends from the lacrimal sac, located in the corner of the eye near the nose, into the nasal cavity, hence the term 'nasolacrimal'. This duct helps to drain excess tears from the eyes to the nose, which is why your nose often runs when you cry.
Wikidata
Nasolacrimal duct
The nasolacrimal duct carries tears from the lacrimal sac into the nasal cavity. The opening of the nasolacrimal duct into the inferior nasal meatus is partially covered by a mucosal fold. Excess tears flow through nasolacrimal duct which drains into the inferior nasal meatus. This is the reason the nose starts to run when a person is crying or has watery eyes from an allergy, and why one can sometimes taste eye drops. Like the lacrimal sac, the duct is lined by stratified columnar epithelium containing mucus-secreting goblet cells, and is surrounded by connective tissue. Obstruction of the nasolacrimal duct, known as dacryostenosis, leads to the excess overflow of tears called epiphora. A congenital obstruction can cause cystic expansion of the duct and is called a dacrocystocele or Timo cyst. Persons with dry eye conditions can be fitted with punctal plugs that seal the ducts to limit the amount of fluid drainage and retain moisture. The canal containing the nasolacrimal duct is called the nasolacrimal canal. In humans, the tear ducts in males tend to be larger than the ones in females.
Matched Categories
Numerology
Chaldean Numerology
The numerical value of nasolacrimal duct in Chaldean Numerology is: 6
Pythagorean Numerology
The numerical value of nasolacrimal duct in Pythagorean Numerology is: 4
Translations for nasolacrimal duct
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- nasolacrimal ductLatin
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"nasolacrimal duct." Definitions.net. STANDS4 LLC, 2024. Web. 23 Apr. 2024. <https://www.definitions.net/definition/nasolacrimal+duct>.
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