iPedia Free Information Center

Information about Maxillary Bone

Bone:
Side view. Maxilla visible at bottom left, in green.
Front view. Maxilla visible at center, in yellow.
subject #38 157
Precursor1st branchial arch[1]
MeSH Maxilla
Dorlands/Elsevier m_05/12517279
The maxilla (plural: maxillae) is a fusion of two bones along the palatal fissure that form the upper jaw. This is similar to the mandible, which is also a fusion of two halves at the mental symphysis.

Function

The alveolar process of the maxilla holds the upper teeth, and is referred to as the maxillary arch. The maxilla attaches laterally to the zygomatic bones (cheek bones).

The maxilla assists in forming the boundaries of three cavities: The maxilla also enters into the formation of two fossae: the infratemporal and pterygopalatine, and two fissures, the inferior orbital and pterygomaxillary.

Components

Each half of the fused maxilla consists of:

Articulations

The maxilla articulates with nine bones: Sometimes it articulates with the orbital surface, and sometimes with the lateral pterygoid plate of the sphenoid.

Additional images


The seven bones which articulate to form the orbit.

Facial bones.

Left maxilla. Outer surface.

Left maxilla. Nasal surface.

Left maxillary sinus opened from the exterior.

The bony palate and alveolar arch.

Sphenoid bone visible center right.

Articulation of left palatine bone with maxilla.

Side view of the teeth and jaws.


See also

References

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
 •  • [ e]
The Bones which form the Orbit
Frontal bone • Zygomatic bone • Maxillary bone • Sphenoid bone • Ethmoid bone • Palatine bone • Lacrimal bone
 •  • [ e]
Bones of head and neck: the face
maxillaBody of maxilla - Maxillary sinus - surfaces of body Anterior (Incisive fossa, Canine fossa, Infraorbital foramen, Anterior nasal spine) - Infratemporal (Alveolar canals, Maxillary tuberosity) - Orbital (Infraorbital groove, Infraorbital canal) - Nasal (Pterygopalatine canal) - processes Zygomatic process - Frontal process (Agger nasi, Anterior lacrimal crest) - Alveolar process - Palatine process (Incisive foramen, Incisive canals, Foramina of Scarpa, Premaxilla, Anterior nasal spine)
lacrimalPosterior lacrimal crest - Lacrimal groove
zygomaticOrbital process, Zygomaticofacial foramen - Zygomaticotemporal foramen - Zygomaticorbital foramina
palatinePterygopalatine fossa - Pterygoid fossa - Horizontal plate (Posterior nasal spine) - Perpendicular plate (Pterygopalatine canal, Sphenopalatine foramen, Pyramidal process)
processes (Orbital - Sphenoidal)
mandiblebody (Symphysis menti, Mental protuberance, Mental foramen, Mylohyoid line) - Ramus (Mandibular foramen, Mylohyoid groove, Mandibular canal, Angle, Coronoid process, Condyloid process, Mandibular notch)
othersnasal bone - inferior nasal conchae (ethmoidal process, maxillary process) - vomer
In the development of vertebrate animals, the pharyngeal arches (also called branchial arches or gill arches in fish) develop during the fourth and fifth week in utero
..... Click the link for more information.
Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. Created and updated by the United States National Library of Medicine (NLM), it is used by the MEDLINE/PubMed
..... Click the link for more information.
Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
..... Click the link for more information.
jaw is either of the two opposable structures forming, or near the entrance to, the mouth.

The term jaws is also broadly applied to the whole of the structures constituting the vault of the mouth and serving to open and close it.
..... Click the link for more information.
mandible (from Latin mandibūla, "jawbone") or inferior maxillary bone is, together with the maxilla, the largest and strongest bone of the face . It forms the lower jaw and holds the lower teeth in place.
..... Click the link for more information.
symphysis menti or line of junction of the two pieces of which the bone is composed at an early period of life.

This ridge divides below and encloses a triangular eminence, the mental protuberance, the base of which is depressed in the center but raised on either side to
..... Click the link for more information.
The alveolar process is the thickened ridge of bone that contains the tooth sockets on bones that bear teeth. It is also referred to as the alveolar bone. In humans, the tooth-bearing bones are the maxilla and the mandible.
..... Click the link for more information.
The zygomatic bone (malar bone) is a paired bone of the human skull. It articulates with the maxilla, the temporal bone, the sphenoid bone and the frontal bone. It forms part of the orbit and is commonly referred to as the cheekbone.
..... Click the link for more information.
mouth, also known as the buccal cavity or the oral cavity, is the orifice through which an organism takes in food and water.

Location

In all mammals, the mouth is forward-facing in the face. Non-mammals have mouths in other locations (e.g.
..... Click the link for more information.
The nasal cavity (or nasal fossa) is a large air-filled space above and behind the nose in the middle of the face.

Function

The nasal cavity conditions the air to be received by the areas of the respiratory tract.
..... Click the link for more information.
In anatomy, the orbit is the cavity or socket of the skull in which the eye and its appendages are situated.

It can also mean the skin which surrounds the eye of a bird.

In the adult human, the volume of the orbit is 30 ml, of which the eye occupies 6.5 ml.
..... Click the link for more information.
Fossa is the Latin word for ditch or trench. More specifically, it can refer to one of the following:

Anatomy

In anatomical terminology, fossa has come to mean a depression or hollow, typically in a bone.
..... Click the link for more information.
The infratemporal fossa is an irregularly shaped cavity, situated below and medial to the zygomatic arch.

Boundaries

It is bounded by the following structures:
  • anteriorly

..... Click the link for more information.
The pterygopalatine fossa is a fossa in the skull.

Boundaries

It has the following boundaries:
  • anterior: maxilla (back surface - palatine process of maxilla)
  • posterior: sphenoid bone (pterygoid process)
  • medial

..... Click the link for more information.
In anatomy, fissure (Latin fissura, Plural fissurae) is a groove, natural division, deep furrow, cleft, or tear in various parts of the body.

Natural fissure

Various types of fissure are:
  • Auricular fissure: found in the temporal bone

..... Click the link for more information.
The lateral wall and the floor of the orbit are separated posteriorly by the inferior orbital fissure which transmits the maxillary nerve and its zygomatic branch, the infraorbital vessels, and the ascending branches from the sphenopalatine ganglion.
..... Click the link for more information.
The pterygomaxillary fissure is vertical, and descends at right angles from the medial end of the inferior orbital fissure; it is a triangular interval, formed by the divergence of the maxilla from the pterygoid process of the sphenoid.
..... Click the link for more information.
The body of the maxilla is somewhat pyramidal in shape, and contains a large cavity, the maxillary sinus (antrum of Highmore).

It has four surfaces - an anterior, a posterior or infratemporal, a superior or orbital, and a medial or nasal.
..... Click the link for more information.
The zygomatic process of the maxilla (malar process) is a rough triangular eminence, situated at the angle of separation of the anterior, zygomatic, and orbital surfaces.
  • In front it forms part of the anterior surface.

..... Click the link for more information.
Frontal process can refer to:
  • Frontal process of maxilla
  • Frontal process of zygomatic bone

..... Click the link for more information.
The alveolar process is the thickened ridge of bone that contains the tooth sockets on bones that bear teeth. It is also referred to as the alveolar bone. In humans, the tooth-bearing bones are the maxilla and the mandible.
..... Click the link for more information.
The palatine process of the maxilla (palatal process), thick and strong, is horizontal and projects medialward from the nasal surface of the bone.

It forms a considerable part of the floor of the nose and the roof of the mouth and is much thicker in front than behind.
..... Click the link for more information.
infraorbital foramen, the end of the infraorbital canal; it transmits the infraorbital artery, vein, and infraorbital nerve.

External links

  • Norman/Georgetown cranialnerves ( V )
  • SUNY Labs 29:os-0506 (closeup)
  • SUNY Figs

..... Click the link for more information.
skull is a bony structure found in many animals which serves as the general framework for the head. The skull supports the structures of the face and protects the head against injury.

The skull can be subdivided into two parts: the cranium and the mandible.
..... Click the link for more information.
Front may refer to:
  • The Front, a 1976 film
  • The Front (The Simpsons episode)
  • Front (identity) for a blacklisted artist
  • Front (magazine)
  • Front (military), an area where armies are engaged in conflict

..... Click the link for more information.
The ethmoid bone (from Greek ethmos, "sieve") is a bone in the skull that separates the nasal cavity from the brain. As such, it is located at the roof of the nose, between the two orbits. The cubical bone is lightweight due to a spongy construction.
..... Click the link for more information.
The face is the front part of the head, in humans from the forehead to chin including the hair, forehead, eyebrow, eyes, nose, cheeks, mouth, lips, philtrum, teeth, skin, and chin. The face is used for expression, appearance and identity amongst others.
..... Click the link for more information.
Nasal may refer to:
  • Nasal consonant
  • Nasal vowel
  • Nose
  • Nasal cavity
  • Nasal bone
  • Nasal Helm
  • Nasal hair

..... Click the link for more information.
Zygomatic (from Greek zygoma, "yoke") can refer to:
  • Zygomatic bone
  • Zygomaticus major muscle

..... Click the link for more information.
In anatomy Lacrimal can refer to:
  • Lacrimal artery
  • Lacrimal bone
  • Lacrimal nerve
  • Lacrimal secretion, see Tears
  • Nasolacrimal duct
  • Lacrimal gland

..... Click the link for more information.


This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
Herod_Archelaus


page counter