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Option 4 : Lacrimal gland
The correct answer is option 4) i.e. Lacrimal gland.
- Tear duct and glands, also called lachrymal, or lacrimal, duct and glands, are structures that produce and distribute the watery component of the tear film.
- Tears consist of a complex and usually clear fluid that is diffused between the eye and the eyelid.
- The mucous layer helps the tear film adhere to the eye surface, while the lipid layer serves to reduce tear evaporation.
- Diseases that damage the lacrimal gland, and thus decrease tear secretion, can lead to chronic dry eye, which ultimately can threaten vision.
- Parotid-glands: These are the largest salivary glands. Situated below the auditory capsule (ear). Their ducts are called Parotid duct/Stenson's ducts that open in the buccal-vestibule.
- Sublingual glands: These are the smallest salivary glands situated in the lower jaw. Their ducts called Ducts of Rivinus open in the buccopharyngeal cavity on the ventral side of the tongue.
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