What bones form lacrimal fossa?
What bones form lacrimal fossa?
Specifically, the lacrimal bone helps form the nasolacrimal canal necessary for tear translocation. A depression on the anterior inferior portion of the bone, the lacrimal fossa, houses the membranous lacrimal sac….
| Lacrimal bone | |
|---|---|
| Medial wall of the orbit. Lacrimal bone is in yellow. | |
| Details | |
| Identifiers | |
| Latin | os lacrimale |
What is a lacrimal fossa?
A smooth, more deeply concave depression on the lacrimal bone, which forms the medial wall of the orbital cavity, in which the lacrimal sac that drains into the nasolacrimal duct is located, is referred to as the lacrimal fossa (or fossa for the lacrimal sac).
What does lacrimal fossa contain?
The upper part of the lacrimal fossa houses the lacrimal sac, whereas the lower part contains the nasolacrimal duct. Posterior to the posterior lacrimal crest is a smooth surface that participates in forming the medial wall of the orbit.
What is the bone that contains the lacrimal groove?
The lacrimal groove is a deep groove in front of the opening of the maxillar sinus on the nasal surface of maxilla, 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 nasolacrimal duct.
What is in the anterior cranial fossa?
The anterior cranial fossa is an important anatomical landmark in clinical orthodontics consisting of the frontal, ethmoid, and sphenoid bones.
What is the ethmoid bone?
The ethmoid bone is an unpaired cranial bone that is a significant component of the upper nasal cavity and the nasal septum. The ethmoid bone also constitutes the medial orbit wall.
What is a fossa in anatomy?
Fossa – A shallow depression in the bone surface. Here it may receive another articulating bone or act to support brain structures. Examples include trochlear fossa, posterior, middle, and anterior cranial fossa.
What is the lacrimal sac for?
Function. It serves as a reservoir for overflow of tears, in which the lacrimal sac pumps inward and outward driven by the orbicularis muscle during blinking.
What is ethmoid bone?
What is palatine bone?
Making up a portion of the nasal cavity and palate, the palatine bone is a paired, L-shaped facial bone. It forms a part of the underside of the skull, and lies between the maxilla bone (the fixed, upper bone of the jaw) and the sphenoid bone (whose wings help form the base of the eye sockets and base of the skull).
