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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.
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∙ 8y ago
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∙ 10y agoThese are the seven bones that make up the orbit of the eye:
Wiki User
∙ 14y agoSeven bones comprise the orbit:
- Frontal bone
- Lacrimal bone
- Ethmoid bone
- Zygomatic bone
- Maxillary bone
- Palatine bone
- Sphenoid bone
Wiki User
∙ 14y agoSeven bones make up the orbit. The roof of the orbit is composed of 2 bones, the frontal bone and the sphenoid bone. The frontal bone comprises the anterior part of the roof of the orbit and the lesser wing of the sphenoid surrounds the optic canal and forms the posterior part of the roof.
The medial wall of the orbit is composed of 4 bones: sphenoid, ethmoid, lacrimal and maxillary bone. The lesser wing of the sphenoid is most posterior and is joined to the ethmoid bone moving anteriorly to the lacrimal bone and then to the maxillary bone.
The floor of the orbit is composed of 3 bones: maxillary bone, zygoma and posteriorly, the palantine bone. The palantine bone borders on the inferior orbital fissure, which narrows posteriorly. In radiologic studies the medial direction and narrowing are key identifiers for this fissure.
The lateral wall of the orbit is composed of the zygoma and the greater wing of the sphenoid.
Wiki User
∙ 12y agoThere are a total of seven different bones that make up each orbit :
1.frontal bone
2.lesser wing of sphenoid (orbitosphenoid)
3.ethmoid bone
4.lacrimal bone
5.maxillary bone
6. zygoma bone
7. greater wing of sphenoid (alisphenoid)
Wiki User
∙ 13y agofrontal bone,lesser and greater wings of sphenoid,zygomatic ,maxilla,palatine ,lacrimal bone and ethmoid bone.
Wiki User
∙ 15y agofrontal bone; maxilla; zygomatic bone; lacrimal bone; sphenoid bone; ethmoid bone; palatine bone
Wiki User
∙ 11y agoAntonio is hit in the face with a football during practice, an x ray reveals multiple fractures of the bones around an orbit. Name the bones that form margins of the orbit?
Wiki User
∙ 13y agofrontal bone,maxilla,zygomatic bone,lacrimal bone,sphenoid bone,ethmoid bone, and palatine bone
Wiki User
∙ 9y agoThe orbit consists of parts of the frontal bone, sphenoid, maxilla, palatine, zygomatic, ethmoid and lacrimal bones.
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What is the anatomical name for the eye socket?
Another name for the eye is oculus, which is Latin.
How many bones make up eye orbit?
Its 7....
What are the bones of the orbital complex?
Orbital Complex has 7 bones that form the bony orbit that encases the eye: Frontal, Maxilla, Lacrimal, Ethmoid, Palatine, Sphenoid & Zygomatic bones.
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 are 5 bones that make up the eye socket?
The bony cavity which contains the eyeball and its associated muscles, vessels, and nerves. In humans, seven bones make up each bony orbit: frontal bone zygomatic bonemaxillasphenoid boneethmoid bonepalatine bonelacrimal bone
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 is a orbit in the axial skeleton?
An orbit is part of the facial bones. They area also called the eye sockets.
What is the anatomical name for the eye socket?
Another name for the eye is oculus, which is Latin.
How many bones make up eye orbit?
Its 7....
Where is the orbit in the eye located?
The frontal, maxillary and zygomatic bones contribute equally to the formation of the orbital margin.
Scientific name of eye socket?
The orbit
What are the bones of the orbital complex?
Orbital Complex has 7 bones that form the bony orbit that encases the eye: Frontal, Maxilla, Lacrimal, Ethmoid, Palatine, Sphenoid & Zygomatic bones.
What are the bones that protect the brain and eyes?
The bone that protects the eye are the facial bone. It's function is for you to be able to see.
Which bones potentially could be involved in a fracture of the orbit?
It should be Maxilla, Lacrimal, Ethmoid and Sphenoid. mnemonics would be My Little Eye Sits in orbit :)
What are the names of the bones in the horses head?
(Skull) Orbit of eye, Nasal bone, Maxilla (upper jaw) and mandible (lower jaw)
Antonio is hit in the face with a football during practice An X ray reveals multiple fractures of the bones around an orbit Name the bones that form margins of the orbit?
In human anatomy, the orbit is usually referred to as the cavity or socket of the skull in which the eye and its appendages are found. The bony shell of the orbit is divided into four sections or margins. Each section is made up of multiple bones. The sections and their bones are the superior margin: frontal bone and sphenoid, inferior margin; maxilla, palatine and zygomatic; medial margin: ethmoid, lacrimal bone, and frontal; and lateral margin: zygomatic and sphenoid.
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.
