Lacrimal
Encyclopedia
The term Lacrimal can refer to:
- In typography:
- A type of Stroke ending (typography)Stroke ending (typography)In typography, a stroke can end in a number of ways. Examples include:* The Serif, including:** The regular serif** The bracketed serif** The half-serif* The terminal, which is any stroke that does not end in a Serif...
- A type of Stroke ending (typography)
- In anatomyAnatomyAnatomy is a branch of biology and medicine that is the consideration of the structure of living things. It is a general term that includes human anatomy, animal anatomy , and plant anatomy...
- Lacrimal apparatusLacrimal apparatusThe lacrimal apparatus is the physiologic system containing the orbital structures for tear production and drainage.It consists of:* the lacrimal gland, which secretes the tears, and its excretory ducts, which convey the fluid to the surface of the eye;...
- Lacrimal arteryLacrimal arteryThe lacrimal artery arises close to the optic foramen, and is one of the largest branches derived from the ophthalmic artery: not infrequently it is given off before the artery enters the orbit....
- Lacrimal boneLacrimal boneThe lacrimal bone, the smallest and most fragile bone of the face, is situated at the front part of the medial wall of the orbit. It has two surfaces and four borders.-Lateral or orbital surface:...
- Lacrimal canaliculiLacrimal canaliculiThe lacrimal canaliculi, also known as the lacrimal canals or lacrimal ducts, are the small channels in each eyelid that commence at minute orifices, termed puncta lacrimalia, on the summits of the papillae lacrimales, seen on the margins of the lids at the lateral extremity of the lacus...
(singular: canaliculus), also known as Lacrimal ducts - Lacrimal fossaLacrimal fossaLocated on the inferior surface of each orbital plate of the frontal bone, is smooth and concave, and presents, laterally, under cover of the zygomatic process, a shallow depression, the lacrimal fossa , for the lacrimal gland....
- Lacrimal fluid, see TearsTearsTears are secretions that clean and lubricate the eyes. Lacrimation or lachrymation is the production or shedding of tears....
- Lacrimal glandLacrimal glandThe lacrimal glands are paired almond-shaped glands, one for each eye, that secrete the aqueous layer of the tear film. They are situated in the upper, outer portion of each orbit, in the lacrimal fossa of the orbit formed by the frontal bone. Inflammation of the lacrimal glands is called...
- Lacrimal grooveLacrimal grooveOn the nasal surface of the body of the maxilla, in front of the opening of the sinus is a deep groove, the lacrimal groove , which is converted into the nasolacrimal canal, by the lacrimal bone and inferior nasal concha; this canal opens into the inferior meatus of the nose and transmits the...
, also known as Lacrimal sulcus - Lacrimal hamulusLacrimal hamulusThe posterior lacrimal crest, with a part of the orbital surface immediately behind it, gives origin to the lacrimal part of the Orbicularis oculi and ends below in a small, hook-like projection, the lacrimal hamulus, which articulates with the lacrimal tubercle of the maxilla, and completes the...
- Lacrimal lakeLacrimal lakeThe lacrimal lake is the pool of tears in the lower conjunctival cul-de-sac, which drains into the opening of the tear drainage system . The volume of the lacrimal lake has been estimated to be between 7 and 10 µL....
- Lacrimal nerveLacrimal nerveThe lacrimal nerve is the smallest of the three branches of the ophthalmic division of the trigeminal nerve.It sometimes receives a filament from the trochlear nerve, but this is possibly derived from the branch that goes from the ophthalmic to the trochlear nerve.It passes forward in a separate...
- Lacrimal papillaLacrimal papillaAt the basal angles of the lacus lacrimalis, on the margin of each eyelid, is a small conical elevation, the lacrimal papilla, the apex of which is pierced by a small orifice, the punctum lacrimale, the commencement of the lacrimal duct.-External links:*...
- Lacrimal punctumLacrimal punctumThe lacrimal canaliculi, one in each eyelid, commence at minute orifices, termed puncta lacrimalia , on the summits of the papillae lacrimales, seen on the margins of the lids at the lateral extremity of the lacus lacrimalis...
- Lacrimal sacLacrimal sacThe lacrimal sac is the upper dilated end of the nasolacrimal duct, and is lodged in a deep groove formed by the lacrimal bone and frontal process of the maxilla...
- Lacrimal secretion, see TearsTearsTears are secretions that clean and lubricate the eyes. Lacrimation or lachrymation is the production or shedding of tears....
- Lacrimal tubercleLacrimal tubercleThe lateral margin of the groove of the frontal process of the maxilla is named the anterior lacrimal crest, and is continuous below with the orbital margin; at its junction with the orbital surface is a small tubercle, the lacrimal tubercle, which serves as a guide to the position of the lacrimal...
- Nasolacrimal ductNasolacrimal ductThe nasolacrimal duct carries tears from the lacrimal sac into the nasal cavity. Excess tears flow through nasolacrimal duct which drains into the inferior nasal meatus...
- Lacrimal apparatus