Definitions

1. The lacrimal is ossified from a single center, which appears about the twelfth week in the membrane covering the cartilaginous nasal capsule.
2. The lacrimal was also more firmly anchored to the frontal and prefrontal bones in Tarbosaurus.

Tear Film

1. The normal canine eye receives its tear film from two lacrimal (tear-producing) glands.

Lacrimal Puncta

1. In each eye, tears flow across the eyeball and enter two openings (lacrimal puncta) into lacrimal canals that lead to the lacrimal sac.

Lacrimal Sacs

1. A tiny hole at the inner edge of each eyelid marks the opening of the ducts, which lead to the lacrimal sacs located on the side of the nose.

Lacrimal Canal

1. We have also the lacrimal canal that leads to the inferior nasal meatus (tears drain to the nasal cavity through this canal).

Nasal Lacrimal Duct

1. Dacryocystitis, a chronic inflamation and infection caused by obstruction of the nasal lacrimal duct 10 or caused by an occlusion of the lacrimal sac 3.

Lacrimal Crest

1. The medial canthal tendon is comprised of a fibrous extension of the tarsus, which inserts into the lacrimal crest of the lacrimal bone.

Lacrimal Gland Dysfunction

1. Salivary and lacrimal gland dysfunction (sicca syndrome) after radioiodine therapy.

Lacrimal Sac Tumors

1. Tumors. Nasal, sinus or lacrimal sac tumors can occur along the duct system, blocking it as they grow larger.

Lacrimal Bone Forms

1. Jaw length Lacrimal bone Forms the front edge of the orbit.

Accessory Lacrimal Gland

1. BTO:0000557 harderian gland An accessory lacrimal gland on the inner side of the orbit in reptiles and birds but usually degenerate in mammals.

Accessory Lacrimal Glands

1. The glands of Krause are accessory lacrimal glands having the same structure as the main gland.

Lacrimal Canaliculus

1. The lacrimal canaliculus and sac bordered by the Horner's muscle form the functional lacrimal drainage system.

Lacrimal Fluid

1. Lacrimal fluid (commonly called "tears") is normally supplied continuously to the human eye from the lacrimal gland.
2. From here, the lacrimal fluid is subsequently collected in the lacrimal sac 6, which is connected to the puncta via a number of canaliculi 4, 5.

Lacrimal Gland Tumor

1. A lacrimal gland tumor is a tumor in the glands that release tears.

Posterior Lacrimal Crest

1. It has a posterior lacrimal crest and an anterior lacrimal crest on the maxilla.

Lacrimal Fossa

1. The lacrimals contain a feature, called the lacrimal sulcus, which helps to form the lacrimal fossa.
2. The lacrimal bone at the level of lacrimal fossa is pretty thin (106 micrometer).
3. This lacrimal fossa is bounded by two projections of bones i.e.

Lacrimal Duct

1. The sulcus, along with a contiguous sulcus on the maxillae, assists in forming the lacrimal fossa which contains the lacrimal duct in life.
2. The lacrimal bone is a small and fragile bone at the inner orbit of the eye through which the lacrimal duct runs.
3. The lacrimal duct 10 is a downward extension of sac 3 and opens into the inferior nasal meadus 13.

Lacrimal Bones

1. The lacrimal bones are the smallest and most fragile of the facial bones and they are paired left and right.

Lacrimal Bone

1. It is formed by indentations in the inferior nasal conchae, maxilla and lacrimal bone.
2. It starts from the fossa sacci lacrimalis which is bordered by the anterior lacrimal crest and the posterior lacrimal crest on the lacrimal bone.
3. The lacrimal bone was not in contact with the frontal anymore, having been separated from it by the prefrontal bone.

Lacrimal Gland

1. The lacrimal gland lies within the orbit on the outer portion of the upper eye.
2. The lacrimal artery, derived from the ophthalmic artery supplies the lacrimal gland.
3. In the lateral upper eyelid, the levator aponeurosis and Müller’s muscle bisect the lacrimal gland into the palpebral and orbital lobes.

Border

1. At the upper border of this aperture are some broken air cells, which, in the articulated skull, are closed in by the ethmoid and lacrimal bones.
2. It accompanies the lacrimal nerve along the upper border of the Rectus lateralis, and supplies the lacrimal gland.

Point

1. The point of junction of the anterior border of the lacrimal with the frontal is named the dacryon.

Position

1. From it two processes are given off; one to enclose the lacrimal gland, the other to hold the pulley of the Obliquus superior in position.
2. Also, the position within the lacrimal duct at which the fistual is formed can vary depending upon the anatomical structures of each particular patient.

Orbital

1. The lacrimal gland consists of an orbital or superior portion; and a small palpebral or inferior portion; which are continuous.

Margin

1. A curved canal beginning at the margin of each eyelid near the medial commissure, and emptying with the duct from the other eye into the lacrimal sac.

Patient

1. Some of the large sulci in the human brain, such as the lacrimal, are named and vary little in size or position from patient to patient.
2. To our knowledge, this is the first report of a patient with nasolacrimal duct obstruction secondary to amyloid deposition in the lacrimal sac and fossa.

Definition

1. Definition of lacrimal bone in the Online Dictionary.

Medical Dictionary

1. Definition of lacrimal in the Medical Dictionary.

Medial

1. The medial and lateral canthal tendons and canaliculi were lost in all of the cases, with the defect including the lacrimal sac in 3 cases.

Cheek

1. Lacrimal sac, muscles of the cheek and side of nose, and inferior portion of orbicularis palpebrarum.

Salivary Glands

1. In the case of Sjögren's syndrome, disease-fighting cells attack the glands that produce tears and saliva (the lacrimal and salivary glands).

Maxillary

1. The lacrimal nerve is occasionally absent, and its place is then taken by the zygomaticotemporal branch of the maxillary.
2. This fossa is formed by the maxillary and lacrimal bones.

Frontal Process

1. Frontal process (Agger nasi, Anterior lacrimal crest) The nasal surface presents a large, irregular opening leading into the maxillary sinus.

Frontal Bone

1. The point of union of the antero-superior angle of the lacrimal with the frontal bone and the frontal process of the maxilla.
2. Dacryon. The point of union of the antero-superior angle of the lacrimal with the frontal bone and the frontal process of the maxilla.

Medial Wall

1. The medial wall of the orbit is thicker posterior where the sphenoid bone is present and anteriorly where the posterior lacrimal crest is present.
2. All the walls of the lacrimal duct except its medial wall is formed by the maxillary bone.
3. The lacrimal bone forms the medial wall superiorly, and the inferior concha of the ethmoid bone forms the medial wall of the canal inferiorly.

Orbit

1. The lateral wall is formed by the lamina papyracea of the orbit, with participation from the frontal process of the maxilla and the lacrimal bone.
2. The lacrimal bone (Os Lacrimale), the smallest and most fragile bone of the face, is situated at the front part of the medial wall of the orbit.
3. The orbital portion is the largest of the portions, and its convex superior surface is lodged in the lacrimal fossa of the orbit formed by the frontal bone.

Lacrimal Sac

1. Contributes to the medial walls of the orbit and contain a deep groove called the lacrimal fossa that houses the lacrimal sac.
2. Lacrimal Canaliculus: The canal that conducts tears from the Lacrimal Puncti to the Lacrimal Sac.
3. At its most medial extension, the medial canthal tendon divides to surround the lacrimal sac located in the lacrimal crest.

Sac

1. The lacrimal sac lies in the bony lacrimal fossa derived from the lacrimal and maxillary bones.
2. Medially it is thin, and, becoming separated from the medial palpebral ligament, is fixed to the lacrimal bone immediately behind the lacrimal sac.
3. The upper part of this fossa lodges the lacrimal sac, the lower part, the naso-lacrimal duct.

Lacrimal Glands

1. Tearing is a common condition that occurs when the lacrimal glands produce too much fluid, typically to the point where tears run down the patient's face.
2. The lacrimal glands are paired almond-shaped glands, one for each eye, that secrete the aqueous layer of the tear film.
3. In one patient, two of the circulating IgG4 VH4-59 clones shared identical CDR3 sequences with the clones within the lacrimal glands.

Glands

1. Inflammation of the glands that produce tears (lacrimal glands) leads to decreased water production for tears and eye dryness.
2. Tears (lacrimal fluid) are produced by the lacrimal glands, which lie above each eye (toward the outer side).
3. The cornea's outside surface is protected by a thin film of tears produced in the lacrimal glands located in the lateral part of orbit below the eyebrow.

Nasal Cavity

1. The nasolacrimal duct (sometimes called tear duct) carries tears from the lacrimal sac into the nasal cavity.
2. The postsynaptic parasymp and symp fibers pass to the lacrimal gland and the glands of the nasal cavity, palate, and upper pharynx.
3. 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.

Inferior

1. When the anterior attachment of the inferior and middle turbinates are removed, the lacrimal drainage system and sinus drainage system can be clearly seen.

Lateral

1. At the medial and forepart of the orbital surface just lateral to the lacrimal groove, is a depression, which gives origin to the Obliquus oculi inferior.
2. It arises from the orbital surface of the maxilla, lateral to the lacrimal groove.
3. The lateral or orbital surface is divided by a vertical ridge, the posterior lacrimal crest, into two parts.

Facial Nerve

1. The visceral motor components of the facial nerve originate in the lacrimal or superior salivatory nucleus.
2. The GSPN, which is composed of parasympathetic fibers from the facial nerve to the lacrimal gland, is an important surgical landmark.

Parotid

1. The lacrimal gland consists of a lobules and is a tubulo-racemose gland with short branched gland tubules somewhat similar to the parotid.

Ducts

1. Histologically, the tissue was found in encapsulated lobules resembling well differentiated lacrimal or salivary glands but completely lacking ducts.
2. The lacrimal apparatus encompasses a series of glands, ducts, sacs and cavities that runs from the top of the eye to the inside of the nose.
3. A tear duct can get infected if it becomes blocked and bacteria collect in the ducts or the lacrimal sac.

Categories

1. Society > Humans > Skull > Maxilla
2. Ethmoid
3. Nasal
4. Palatine
5. Bones

Related Keywords

* Anterior * Bones * Ethmoid * Frontal * Maxilla * Nasal * Ossified * Palatine * Salivary * Sphenoid * Zygomatic

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