LACHRYMAL DUCT Meaning and
Definition
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A lachrymal duct, also known as a lacrimal duct or tear duct, is a vital part of the eye's anatomical structure responsible for draining tears. It essentially functions as a conduit, transporting tears from the ocular surface to the nasal cavity. There are two main lachrymal ducts, one for each eye, located on the inner corner of the eyelid near the lacrimal punctum.
The lachrymal duct is composed of several interconnected parts that form a complex drainage system. It begins with the lacrimal gland, which produces tears, providing lubrication and moisture to the eye. These tears then spread across the ocular surface before entering the lacrimal canaliculi, small channels in the eyelids that collect the tears. From there, the collected tears pass through the lacrimal sac, a small pouch-like structure, and ultimately drain into the nasal cavity through the nasolacrimal duct.
The lachrymal duct plays a crucial role in maintaining the health and function of the eyes. It helps to regulate tear production, ensuring that the eyes remain moist and protected from dryness and irritation. Additionally, it aids in the removal of foreign particles, dust, and debris that may come into contact with the eye. When there is an obstruction or malfunctioning in the lachrymal duct, it can lead to conditions such as excessive tearing, dry eye syndrome, or infections.
Common Misspellings for LACHRYMAL DUCT
- kachrymal duct
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- oachrymal duct
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- lacheymal duct
- lachdymal duct
Etymology of LACHRYMAL DUCT
The word "lachrymal duct" is derived from the Latin word "lachryma", meaning "tear", and the Latin word "ductus", meaning "a leading or conveying". The term "lachrymal" refers to tears, while "duct" refers to a tube or conduit. Therefore, "lachrymal duct" refers to the tube or conduit that carries tears from the lacrimal gland to the nasal cavity.
Similar spelling words for LACHRYMAL DUCT
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