sphenomandibular ligament

Information about sphenomandibular ligament

Ligament: Sphenomandibular ligament
Articulation of the mandible. Medial aspect. (Spheno-mandibular lig. labeled vertically at center.)
Latinligamentum sphenomandibulare
subject #75 297
Fromspine of sphenoid bone
Tomandibular foramen
Dorlands/Elsevier l_09/12493077
The sphenomandibular ligament (internal lateral ligament) is a flat, thin band which is attached above to the spina angularis of the sphenoid bone, and, becoming broader as it descends, is fixed to the lingula of the mandibular foramen. The function of the Sphenomandibular Ligament is to limit distension of the mandible in an inferior direction.

Its lateral surface is in relation, above, with the Pterygoideus externus; lower down, it is separated from the neck of the condyle by the internal maxillary vessels; still lower, the inferior alveolar vessels and nerve and a lobule of the parotid gland lie between it and the ramus of the mandible.

Its medial surface is in relation with the Pterygoideus internus.

The sphenomandibular ligament is most often damaged in an inferior alveolar nerve block.

External links

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Joints and ligaments of Head and Neck
Atlanto-axialanterior atlantoaxial ligament - posterior atlantoaxial ligament - cruciform ligament of atlas (transverse ligament of the atlas)
Atlanto-occipitalanterior atlantoccipital membrane - posterior atlantoccipital membrane - tectorial membrane - alar ligament - ligament of apex dentis
Temporomandibularcapsule - temporomandibular ligament - sphenomandibular ligament - stylomandibular ligament - articular disk


The sphenomandibular ligament is most often damaged in an inferior alveolar nerve block.
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.
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Latin}}} 
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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spina angularis (sphenoidal spine).

External links

  • SUNY Figs 27:02-04 - "Schematic view of key landmarks of the infratemporal fossa."
  • Roche Lexicon - illustrated navigator, at Elsevier 34257.

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The Mandibular foramen is an opening on the internal surface of the ramus (posterior and perpendicularly oriented part of the mandible) for divisions of the mandibular vessels and nerve to pass.
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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.
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spina angularis (sphenoidal spine).

External links

  • SUNY Figs 27:02-04 - "Schematic view of key landmarks of the infratemporal fossa."
  • Roche Lexicon - illustrated navigator, at Elsevier 34257.

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The sphenoid bone (from Greek sphenoeides, "wedgelike") is a bone situated at the base of the skull in front of the temporals and basilar part of the occipital bone.

The sphenoid bone somewhat resembles a butterfly or bat with its wings extended.
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Lingula is Latin for "little tongue". It can stand for:
  • Lingula (genus) a brachiopod genus of the family Lingulidae, which is among the few brachiopods surviving today but also known from fossils over 50 million years old.

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The Mandibular foramen is an opening on the internal surface of the ramus (posterior and perpendicularly oriented part of the mandible) for divisions of the mandibular vessels and nerve to pass.
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The lateral pterygoid (or external pterygoid) is a muscle of mastication with two heads.

Origin and insertion

The upper/superior head originates on the infratemporal surface and infratemporal crest of the greater wing of the sphenoid bone, and the lower/inferior
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Condyle L. fr. G. kondylos, knuckle, the knuckle of any joint, a round projection, rounded articular area (ex. condyles of the femur) one of the markings/features of bones, can refer to:
  • Lateral condyle
  • Medial condyle

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The maxillary artery (or internal maxillary artery in older texts) is an artery that supplies deep structures of the face.

Structure



The maxillary artery, the larger of the two terminal branches of the external carotid artery, arises behind the neck of the
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The inferior alveolar artery (inferior dental artery) is an artery of the face.

Course

It descends with the inferior alveolar nerve to the mandibular foramen on the medial surface of the ramus of the mandible.
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For the toad wart, see parotoid gland.

The parotid gland is the largest of the salivary glands. It is found wrapped around the mandibular ramus, and it secretes saliva through Stensen's duct into the oral cavity, to facilitate mastication and swallowing.
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Ramus can refer to:
  • Petrus Ramus
  • A portion of a bone (from Latin ramus, "branch"), as in the Ramus mandibulæ or Superior pubic ramus
  • A nerve ramus such as the Dorsal ramus of spinal nerve

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The medial pterygoid (or internal pterygoid muscle), is a thick, quadrilateral muscle of mastication.

The mandibular branch of the fifth cranial nerve, the trigeminal nerve, innervates the medial pterygoid muscle.
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University of Washington, founded in 1861, is a public research university in Seattle, Washington. Also known as Washington and locally as The U or UW (usually pronounced "U-Dub"), it is the largest university in the Northwestern United States and the oldest
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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.
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Producer(s) I've Sound

Mami Kawada singles chronology

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In anatomy, the term ligament is used to denote three different types of structures:[1]
  1. Fibrous tissue that connects bones to other bones. They are sometimes called "articular ligaments"[2], "fibrous ligaments", or "true ligaments".

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Head and neck anatomy focuses on the structures of the head and neck of the human body, including the brain, bones, muscles, blood vessels, nerves, glands, nose, mouth, teeth, tongue, and throat.
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The Atlanto-axial joint (articulation of the atlas with the axis) is of a complicated nature, comprising no fewer than four distinct joints.

There is a pivot articulation between the odontoid process of the axis and the ring formed by the anterior arch and the
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The anterior atlantoaxial ligament is a strong membrane, fixed, above, to the lower border of the anterior arch of the atlas; below, to the front of the body of the axis.
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The posterior atlantoaxial ligament is a broad, thin membrane attached, above, to the lower border of the posterior arch of the atlas; below, to the upper edges of the laminæ of the axis.
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The cruciform ligament of atlas (or cruciate ligament) is a ligament of the atlanto-axial joint.

It consists of the transverse ligament of the atlas, along with additional fibers above and below.[1]

References

1.

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The transverse ligament of the atlas is a thick, strong band, which arches across the ring of the atlas, and retains the odontoid process in contact with the anterior arch.
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The Atlanto-occipital joint (articulation between the atlas and the occipital bone) consists of a pair of condyloid joints.

Ligaments

The ligaments connecting the bones are:
  • Two Articular capsules
  • Posterior atlantoöccipital membrane

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The Membrana Tectoria (occipitoaxial ligaments) is situated within the vertebral canal.

It is a broad, strong band which covers the odontoid process and its ligaments, and appears to be a prolongation upward of the posterior longitudinal ligament of the vertebral
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The alar ligaments connect the sides of the dens (on the axis, or the second cervical vertebra) to tubercles on the medial side of the occipital condyle.

They are short, tough, fibrous cords that attach the skull to C1 vertebra and function to check side-to-side movements
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In the triangular interval between the alar ligaments is another fibrous cord, the ligament of apex dentis (or apical odontoid ligament), which extends from the tip of the odontoid process to the anterior margin of the foramen magnum, being intimately blended with the deep
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