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The lacrimal apparatus. Right side. Outline of bones of face, showing position of air sinuses. The nasolacrimal duct (also called the tear duct) carries tears from the lacrimal sac of the eye into the nasal cavity. [1][2] The duct begins in the eye socket between the maxillary and lacrimal bones, from where it passes downwards and backwards.
The lacrimal apparatus is the physiological system containing the orbital structures for tear production and drainage. [1] The lacrimal gland, which secretes the tears, and its excretory ducts, which convey the fluid to the surface of the eye; it is a j-shaped serous gland located in lacrimal fossa. The lacrimal canaliculi, the lacrimal sac ...
The lacrimal canaliculi are labelled as the lacrimal ducts. The lacrimal canaliculi (sg.: canaliculus) are the small channels in each eyelid that drain lacrimal fluid, from the lacrimal puncta to the lacrimal sac. This forms part of the lacrimal apparatus that drains lacrimal fluid from the surface of the eye to the nasal cavity.
The lacrimal gland is a compound tubuloacinar gland, it is made up of many lobules separated by connective tissue, each lobule contains many acini.The acini composed of large serous cells which, produce a watery serous secretion, serous cells are filled with lightly stained secretory granules and surrounded by well-developed myoepithelial cells and a sparse, vascular stroma.
Diagram of eye with surrounding superior, oblique, medial and inferior rectus muscles; supraorbital foramen shown above the eye, and inferior orbital fissure inferolaterally. In anatomy, the orbit is the cavity or socket/hole of the skull in which the eye and its appendages are situated. "Orbit" can refer to the bony socket, [ 1 ] or it can ...
The accessory visual structures (or adnexa of eye, ocular adnexa, etc.) are the protecting and supporting structures (adnexa) of the eye, including the eyebrow, eyelids, and lacrimal apparatus. The eyebrows, eyelids, eyelashes, lacrimal gland and drainage apparatus all play a crucial role with regards to globe protection, lubrication, and ...
Evaporative dry eye symptoms include: Awakening with a dry eye feeling. Eye irritation. Feeling like your eyelids are stuck to your eyeballs. Red eyes. The less common form of dry eye is aqueous ...
Lacrimal punctum. The tarsal glands, etc., seen from the inner surface of the eyelids. (Puncta lacrimalia visible at center left.) The lacrimal apparatus. Right side. Note outdated terminology: The "Lacrimal ducts" in Gray's are now called "Lacrimal canals". The lacrimal punctum (pl.: puncta) or lacrimal point is a minute opening on the summits ...