Lacrimation
Lacrimation
Lacrimation (pronunciation: /ˌlakrɪˈmeɪʃ(ə)n/), also known as tearing or crying, is the body's process of producing tears, which are a clear liquid secreted by the lacrimal glands located in the upper, outer region of the eye socket. The term originates from the Latin word lacrima, meaning "tear".
Function
The primary function of lacrimation is to maintain the eye's lubrication and protect it from foreign bodies or irritants. Tears are composed of water, mucus, and lipids, which help to keep the eye surface smooth and clear.
Types of Lacrimation
There are three types of lacrimation: basal, reflex, and emotional. Basal lacrimation is the constant production of tears to keep the eye moist. Reflex lacrimation occurs in response to an irritant, such as dust or an onion. Emotional lacrimation is associated with strong emotions, such as sadness or joy.
Disorders
Disorders related to lacrimation include dry eye syndrome, where there is insufficient tear production, and epiphora, where there is excessive tear production or poor tear drainage.
Related Terms
- Blepharitis: Inflammation of the eyelids that can disrupt lacrimation.
- Dacryocystitis: Inflammation of the lacrimal sac, potentially affecting tear drainage.
- Keratoconjunctivitis sicca: Also known as dry eye syndrome.
External links
- Medical encyclopedia article on Lacrimation
- Wikipedia's article - Lacrimation
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