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Medial pterygoid muscle information


Medial pterygoid
The pterygoidei; the zygomatic arch and a portion of the ramus of the mandible have been removed. (Internus is visible at center bottom.)
The otic ganglion and its branches. (Pterygoideus internus labeled at bottom right.)
Details
OriginDeep head: medial side of lateral pterygoid plate behind the upper teeth
Superficial head: pyramidal process of palatine bone and maxillary tuberosity
InsertionMedial angle of the mandible
ArteryPterygoid branches of maxillary artery
NerveMandibular nerve via nerve to medial pterygoid
ActionsElevates mandible, closes jaw, helps lateral pterygoids in moving the jaw from side to side
Identifiers
Latinmusculus pterygoideus medialis, musculus pterygoideus internus
TA98A04.1.04.009
TA22113
FMA49011
Anatomical terms of muscle
[edit on Wikidata]

The medial pterygoid muscle (or internal pterygoid muscle) is a thick, quadrilateral muscle of the face. It is supplied by the mandibular branch of the trigeminal nerve (V). It is important in mastication (chewing).

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Medial pterygoid muscle

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The medial pterygoid muscle (or internal pterygoid muscle) is a thick, quadrilateral muscle of the face. It is supplied by the mandibular branch of the...

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of a medial pterygoid plate and a lateral pterygoid plate, the latter of which serve as the origins of the medial and lateral pterygoid muscles. The medial...

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Lateral pterygoid muscle

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lateral pterygoid muscle (or external pterygoid muscle) is a muscle of mastication. It has two heads. It lies superior to the medial pterygoid muscle. It...

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Medial pterygoid

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Medial pterygoid may refer to: Medial pterygoid muscle Medial pterygoid nerve Medial pterygoid plate This disambiguation page lists articles associated...

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Medial pterygoid nerve

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V3). It supplies the medial pterygoid muscle, the tensor veli palatini muscle, and the tensor tympani muscle. The medial pterygoid nerve is a slender branch...

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Infratemporal fossa

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including the lower part of the temporalis muscle, the lateral pterygoid muscle, and the medial pterygoid muscle. It also contains important blood vessels...

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Tensor veli palatini muscle

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muscle.[citation needed] From its origin to its insertion, the muscle passes vertically between the medial pterygoid plate and the medial pterygoid muscle...

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Pterygoid muscle may refer to: Lateral pterygoid muscle Medial pterygoid muscle This disambiguation page lists articles associated with the title Pterygoid...

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Pterygoid

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processes of the sphenoid bone Lateral pterygoid plate Medial pterygoid plate Lateral pterygoid muscle Medial pterygoid muscle a branch of the Mandibular nerve...

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Masseter muscle

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process. Along with the other three muscles of mastication (temporalis, medial pterygoid, and lateral pterygoid), the masseter is innervated by the anterior...

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Pterygomandibular space

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is paired on each side. It is located between the lateral pterygoid muscle and the medial surface of the ramus of the mandible. The pterygomandibular...

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Pterygoid branches of maxillary artery

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The pterygoid branches of the maxillary artery, irregular in their number and origin, supply the lateral pterygoid muscle and medial pterygoid muscle. This...

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Muscles of mastication

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the temporalis by some sources, and a distinct muscle by others) The medial pterygoid The lateral pterygoid In humans, the mandible, or lower jaw, is connected...

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Pterygoid fossa

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posteriorly, and contains the medial pterygoid muscle and the tensor veli palatini muscle. Pterygoid fovea Scaphoid fossa Pterygoid process This article incorporates...

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Pterygoid hamulus

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pterygomandibular raphe, and the levator veli palatini muscle. The pterygoid hamulus is part of the medial pterygoid plate of the sphenoid bone of the skull. Its...

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Superior pharyngeal constrictor muscle

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muscles collectively are the pterygoid hamulus (and occasionally the adjoining posterior margin of the medial pterygoid plate) anteriorly, (the posterior...

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Maxillary tuberosity

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articulates with the lateral pterygoid plate of the sphenoid. It gives origin to a few fibers of the medial pterygoid muscle. This article incorporates...

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Mandibular nerve

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Division (Motor Innervation - Muscles of mastication) Masseteric nerve Masseter muscle Medial pterygoid nerve Medial pterygoid muscle Tensor tympani msucle Tensor...

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Tonsillar artery

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superior-ward between the medial pterygoid muscle and styloglossus muscle. Upon reaching the superior border of the styloglossus muscle, the tonsillar artery...

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Mandible

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Behind this groove is a rough surface, for the insertion of the medial pterygoid muscle. The mandibular canal runs obliquely downward and forward in the...

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Stylomandibular ligament

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border of the angle of the mandible, between the masseter muscle and medial pterygoid muscle. The stylomandibular ligament limits mandibular movements...

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Bruxism

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involved in both. The muscles of mastication (the temporalis muscle, masseter muscle, medial pterygoid muscle and lateral pterygoid muscle) are paired on either...

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Angle of the mandible

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pterygoideus internus (medial pterygoid muscle) medially; the stylomandibular ligament is attached to the angle between these muscles. The forensic term for...

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muscle Rhomboid major muscle and Rhomboid minor muscle Trapezius muscle elevation of the ribs Pectoralis minor muscle Scalene muscles mandible Medial...

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buccopharyngeal fascia. It is attached superiorly to the pterygoid hamulus of the medial pterygoid plate, and inferiorly to the posterior end of the mylohyoid...

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Internal pterygoid

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Internal pterygoid is the obsolete attribution for medial pterygoid, and refers to: Medial pterygoid muscle Medial pterygoid nerve This disambiguation...

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Trismus

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inserting a needle into or through a muscle. In these cases it is usually the medial pterygoid or the buccinator muscles. Oral surgery procedures, as in the...

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Tensor tympani muscle

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acts to damp the noise produced by chewing. When tensed, the muscle pulls the malleus medially, tensing the tympanic membrane and damping vibration in the...

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This is a table of skeletal muscles of the human anatomy, with muscle counts and other information. Skeletal muscle maps Anterior view Posterior view...

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The nerve then comes to pass inferoanteriorly upon the medial pterygoid muscle towards the medial aspect of the ramus of mandible, eventually meeting the...

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