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The bones that form the orbit of the eye are the ethmoid, lacrimal, maxilla, frontal, sphenoid, zygoma, palatine
The orbits are pyramidal, bony cavities in the facial skeleton with their bases (orbital openings) directed anterolaterally and their apices, posteromedially. The orbits contain and protect the eyeballs and their muscles, nerves, and vessels, together with most of the lacrimal apparatus. All space in the orbits not occupied by structures is filled with orbital fat. The fat forms a matrix in which the structures of the orbit are embedded.
The orbit has a base, four walls, and an apex:
The superior wall (roof) is approximately horizontal and is formed mainly by the orbital part of the frontal bone, which separates the orbital cavity from the anterior cranial fossa. Near the apex of the orbit, the superior wall is formed by the lesser wing of the sphenoid. Anterolaterally the lacrimal gland occupies the fossa for the lacrimal gland (lacrimal fossa) in the orbital part of the frontal bone.
The medial wall is formed by the ethmoid bone, along with contributions from the frontal, lacrimal, and sphenoid bones. Anteriorly, the medial wall is indented by the lacrimal groove and fossa for the lacrimal sac. The bone forming the medial wall is paper thin, and the ethmoid air cells are often visible through the bone of a dried cranium.
The lateral wall is formed by the frontal process of the zygomatic bone and the greater wing of the sphenoid. This is the strongest and thickest wall, which is important because it is most exposed and vulnerable to direct trauma. Its posterior part separates the orbit from the temporal lobes of the brain and middle cranial fossae.
The inferior wall (floor) is formed mainly by the maxilla and partly by the zygomatic and palatine bones. The thin inferior wall is shared by the orbit superiorly and the maxillary sinus inferiorly. It slants inferiorly from the apex to the inferior orbital margin. The inferior wall is demarcated from the lateral wall by the inferior orbital fissure.
The apex of the orbit is at the optic canal in the lesser wing of the sphenoid, just medial to the superior orbital fissure.
The bones forming the orbit are lined with periorbita (periosteum of the orbit). The periorbita is continuous at the optic canal and superior orbital fissure with the periosteal layer of dura mater. The periorbita is also continuous over the orbital margins and through the inferior orbital fissure with the periosteum covering the external surface of the cranium (pericranium) and with the orbital septa at the orbital margins, with the fascial sheaths of the extraocular muscles, and with orbital fascia that forms the fascial sheath of the eyeball.
What else can I help you with?
What margin of the orbit are the lacrimal bones?
lacrimal bones are on the lateral margin of the orbit.
How many bones make up eye orbit?
Each eye orbit (socket) is made up of seven bones: frontal, ethmoid, lacrimal, zygomatic, sphenoid, palatine, and maxilla. These bones protect and support the eyeball within the skull.
Common name of orbit bone?
The common name of the orbit bone is the eye socket. It is a bony cavity in the skull that contains the eye and its associated muscles and nerves.
What is the anatomical name for the eye socket?
The anatomical name for the eye socket is the orbit. It is a bony cavity in the skull that houses and protects the eye, along with its associated structures such as muscles, nerves, and blood vessels.
What part of the skeleton is the eye held in?
The skull contains what we call the eye socket or orbit. There are seven bones that articulate to form the orbit: frontal bone, lacrimal bone, ethmoid bone, zygomatic bone, maxillary bone, palatine bone and the sphenoid bone.
What margin of the orbit are the lacrimal bones?
lacrimal bones are on the lateral margin of the orbit.
What thin bones that make up part of the orbit at the inner angle of the eye?
The thin bones that make up part of the orbit at the inner angle of the eye are called the lacrimal bones. They are small and delicate, and contribute to the formation of the tear ducts and the medial wall of the orbit.
What houses the eyes?
The eye is housed in a bony socket in the skull called the orbit. The orbit is formed by several bones, including the frontal, zygomatic, maxilla, and ethmoid bones. These bones provide protection and support for the eyes.
How many bones make up eye orbit?
Each eye orbit (socket) is made up of seven bones: frontal, ethmoid, lacrimal, zygomatic, sphenoid, palatine, and maxilla. These bones protect and support the eyeball within the skull.
Where is the orbit in the eye located?
The frontal, maxillary and zygomatic bones contribute equally to the formation of the orbital margin.
What does the combining form orbit-o mean?
The combining form orbit-o refers to structures related to the eye socket or orbital cavity, such as the bones, nerves, or blood vessels surrounding the eye.
Common name of orbit bone?
The common name of the orbit bone is the eye socket. It is a bony cavity in the skull that contains the eye and its associated muscles and nerves.
What is the anatomical name for the eye socket?
The anatomical name for the eye socket is the orbit. It is a bony cavity in the skull that houses and protects the eye, along with its associated structures such as muscles, nerves, and blood vessels.
Scientific name of eye socket?
The orbit
Scientific name of eyesocket?
The eye socket is called the orbit, The orbital bone is the cavity or socket of the skull in which the eye and its appendages are situated
Which bone does not make up a part of the orbit?
The mandible does not make up a part of the orbit. The orbit, or eye socket, is primarily formed by seven bones: the frontal, sphenoid, zygomatic, maxilla, palatine, lacrimal, and ethmoid bones. The mandible, which is the lower jawbone, is located below the skull and does not contribute to the structure of the orbit.
What is the scientific name for eye socket?
the trentonomous sicogliceneral
