The lacrimal apparatusis shown through dissection on the left side.
The lacrimal sac has been opened showing internal organization as well as the naso-lacrymal duct.
Details
Artery
Angular artery
Identifiers
Latin
saccus lacrimalis
TA98
A15.2.07.068
TA2
6857
FMA
20289
Anatomical terminology
[edit on Wikidata]
The lacrimal sac or lachrymal sac[1] is the upper dilated end of the nasolacrimal duct,[2] and is lodged in a deep groove formed by the lacrimal bone and frontal process of the maxilla. It connects the lacrimal canaliculi, which drain tears from the eye's surface, and the nasolacrimal duct, which conveys this fluid into the nasal cavity.[3] Lacrimal sac occlusion leads to dacryocystitis.
[4]
^Dr. Johannes Sobotta (1909). Sobotta's Atlas and Textbook of Human Anatomy. Philadelphia.{{cite book}}: CS1 maint: location missing publisher (link)
^Sacks, Raymond; Naidoo, Yuresh (2019-01-01). Endoscopic Dacryocystorhinostomy. pp. 143–148.e1. doi:10.1016/B978-0-323-47664-5.00017-1. ISBN 9780323476645. Retrieved 2020-05-08. Anatomy: The lacrimal sac extends approximately 10 mm above the axilla of the middle turbinate.
^Remington, Lee Ann (2012). "Ocular Adnexa and Lacrimal System". Clinical Anatomy and Physiology of the Visual System. Elsevier. pp. 159–181. doi:10.1016/b978-1-4377-1926-0.10009-8. ISBN 978-1-4377-1926-0. The lacrimal sac lies within a fossa in the anterior portion of the medial orbital wall. This fossa is formed by the frontal process of the maxillary bone and the lacrimal bone. The sac is surrounded by fascia, continuous with the periorbita, which runs from the anterior to the posterior lacrimal crests.
^Beare, Nicholas A.V.; Bastawrous, Andrew (2014). "Ophthalmology in the Tropics and Sub-tropics". Manson's Tropical Infectious Diseases. Elsevier. pp. 952–994.e1. doi:10.1016/b978-0-7020-5101-2.00068-6. ISBN 978-0-7020-5101-2. Tears drain through the canaliculi, lacrimal sac and naso-lacrimal duct into the nose. Blockage of the naso-lacrimal duct prevents drainage of the lacrimal sac, which may lead to infection, causing a painful swelling at the side of the nose below the medial canthus. This may present as a chronically watery, discharging eye, or as an acutely inflamed abscess. This should be treated with oral broad-spectrum antibiotics. The problem may recur unless drainage into the nose is re-established.
The lacrimalsac or lachrymal sac is the upper dilated end of the nasolacrimal duct, and is lodged in a deep groove formed by the lacrimal bone and frontal...
secreted by the lacrimal ducts, and flow over the ocular surface, and then into canals that connect to the lacrimalsac. From that sac, the tears drain...
lacrimal canaliculi (sg.: canaliculus) are the small channels in each eyelid that drain lacrimal fluid, from the lacrimal puncta to the lacrimalsac....
nasolacrimal duct is located, is referred to as the lacrimal fossa (or fossa for the lacrimalsac). Fossa for lacrimal gland This article incorporates text in the...
portion of one bone, the lacrimal fossa, houses the membranous lacrimalsac. Tears, from the lacrimal glands, collect in this sac during excessive lacrimation...
carries tears from the lacrimalsac of the eye into the nasal cavity. The duct begins in the eye socket between the maxillary and lacrimal bones, from where...
The lacrimal part is a small, thin muscle, about 6 mm in breadth and 12 mm in length, situated behind the medial palpebral ligament and lacrimalsac. It...
eye; it is a j-shaped serous gland located in lacrimal fossa. The lacrimal canaliculi, the lacrimalsac, and the nasolacrimal duct, by which the fluid...
the nose from the lacrimalsac when the nasolacrimal duct does not function. A dacryocystostomy is an incision into the lacrimalsac, usually to promote...
disease.[citation needed] Dacryoliths or cast formation, within the lacrimalsac can also produce obstruction of the nasolacrimal duct. Sinus disease...
Dacryocystitis is an infection of the lacrimalsac, secondary to obstruction of the nasolacrimal duct at the junction of lacrimalsac. The term derives from the...
collect tears produced by the lacrimal glands. The fluid is conveyed through the lacrimal canaliculi to the lacrimalsac, and thence via the nasolacrimal...
branches of the ophthalmic artery. It contributes arterial supply to the lacrimalsac, and outer surface of the nose. The dorsal nasal artery is one of the...
The opening of each canaliculus is the lacrimal punctum. From the punctum, tears will enter the lacrimalsac, then on to the nasolacrimal duct, and finally...
a lacrimal gland. A dacryocystectomy is the surgical removal of a part of the lacrimalsac. A dacryocystostomy is an incision into the lacrimalsac, usually...
cavity. It is also in use in dacryocystorhinostomy surgery in which the lacrimalsac mucosa is connected to the nasal mucosa above the level of the mechanical...
corresponding groove on the lacrimal is brought into continuity, and together they form the lacrimal fossa for the lodgement of the lacrimalsac. The lateral margin...
surgical procedure to restore the flow of tears into the nose from the lacrimalsac when the nasolacrimal duct does not function. A small incision is made...
The anterior lacrimal crest is a bony projection on the frontal process of the maxilla. It creates the lateral margin of the lacrimalsac fossa and is...
the sense of hearing The nasolacrimal ducts, to carry tears from the lacrimalsac into the nasal cavity The anus, for defecation In males, the urinary...
with the dorsal nasal branch of the ophthalmic artery. It supplies the lacrimalsac, the orbicularis oculi muscle, and the outer side of the nose. The angular...
of the maxilla. The posterior lacrimal crest is just behind the lacrimalsac, and its upper part lodges the lacrimalsac. The lower part lodges the nasolacrimal...
Lacrimal fossa can refer to: Fossa for lacrimal gland Fossa for lacrimalsac This disambiguation page lists articles associated with the title Lacrimal...
eye; it is a serous gland located in lacrimal fossa. It is a j-shaped gland; The lacrimal canaliculi, the lacrimalsac, and the nasolacrimal duct, by which...
supraciliaris runs from the brow, curving downwards towards the lachrymal sac. Epicanthus palpebralis begins above the upper tarsus and extends to the...
the lacrimal tubercle, which serves as a guide to the position of the lacrimalsac. This article incorporates text in the public domain from page 161 of the...
of the lacrimal groove (near the nasal bone and the frontal bone), and its posterior attachment is the lacrimal bone. Crossing the lacrimalsac, it divides...
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