lacrimal gland
Học thuậtThân thiện
Definition
Noun: A lacrimal gland is one of the paired glands located in the upper, outer portion of each eye socket. Its primary function is to produce and secrete the watery, aqueous layer of tears, which lubricates the eye's surface, provides nutrients, and helps protect against infection.
Usage
The term "lacrimal gland" is used specifically in anatomical, medical, and biological contexts to refer to this organ. * The lacrimal gland secretes tears in response to irritation or emotion. * Inflammation of the lacrimal gland can cause pain and swelling near the eyebrow. * A doctor may examine the lacrimal gland if a patient has chronic dry eye.
Advanced Usage
- Clinical Context: The term is central in diagnoses like dacryoadenitis (inflammation of the lacrimal gland) or Sjögren's syndrome (an autoimmune disorder that can affect lacrimal glands).
- Anatomical Description: Often described in relation to its location (the lacrimal fossa of the frontal bone) and its duct system which delivers tears to the eye's surface.
Variants and Related Words
- Tear gland: A common synonym for lacrimal gland.
- Lacrimal apparatus: The entire system involved in tear production and drainage, which includes the lacrimal gland, puncta, canaliculi, lacrimal sac, and nasolacrimal duct.
- Lacrimal (adjective): Pertaining to tears or the lacrimal gland (e.g., lacrimal fluid, lacrimal duct).
Synonyms
- Tear gland
Related Phrases and Terms
- Lacrimal secretion: The act of producing tears or the tears themselves.
- Dacryoadenitis: Medical term for inflammation of the lacrimal gland.
Noun
- any of the glands in the eyes that secrete tears