Lacrimal
Lacrimal
Lacrimal (pronunciation: /ˈlakrɪməl/) is a term that pertains to tears or the glands that produce tears. The term is derived from the Latin word "lacrima," which means "tear."
Etymology
The term "lacrimal" is derived from the Latin word "lacrima," which translates to "tear." It is used in the medical field to refer to anything related to tears or the tear-producing glands.
Lacrimal Gland
The Lacrimal gland is an important part of the lacrimal system. It is responsible for producing the aqueous layer of the tear film which lubricates the eye. It is located in the upper outer region of the orbit, in the lacrimal fossa of the frontal bone.
Lacrimal Duct
The Lacrimal duct, also known as the nasolacrimal duct, is a part of the lacrimal system that drains tears from the eyes to the nasal cavity. It starts at the lacrimal punctum, travels through the lacrimal canaliculi, lacrimal sac, and ends in the inferior nasal meatus.
Lacrimal Sac
The Lacrimal sac is a structure of the lacrimal system that collects tears from the lacrimal canaliculi and drains them into the nasolacrimal duct. It is located in the lacrimal fossa of the frontal bone, medial to the eye.
Lacrimal Punctum
The Lacrimal punctum is a small opening located on the margin of each eyelid. It is the entry point for tears into the lacrimal system.
Lacrimal Canaliculi
The Lacrimal canaliculi are small channels in each eyelid that drain tears from the lacrimal punctum to the lacrimal sac.
Related Terms
- Tears: The fluid produced by the lacrimal glands to lubricate the eyes.
- Orbit: The bony cavity in the skull that contains the eye and its associated structures, including the lacrimal gland.
- Nasolacrimal duct: Another term for the lacrimal duct.
External links
- Medical encyclopedia article on Lacrimal
- Wikipedia's article - Lacrimal
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